Dr Rohan Stanger
Research Associate
School of Engineering
- Email:rohan.stanger@newcastle.edu.au
- Phone:(02) 4921 6108
Re-thinking carbon in the renewable energy sector
Dr Rohan Stanger is driven to find new and clever ways to use our carbon resources. With a career in coal and biomass research, he is well placed to see a global energy future that is founded on carbon – but not in the ways we are used to.
Rohan, a chemical engineer, began his research career in coal utilisation. He’s well versed in particle processing, capturing CO2 with oxy-fuel technology, and heating particles to make carbon, carbon materials and porous carbon structures. His focus now is to continue to push for new uses for coal and carbon in the renewable energy sector.
“We can’t continue to mine coal to burn. We know that’s just not sustainable and it’s a waste of good carbon!” declares Rohan.
“As a society, we need to think differently about how we use coal and our biomass resources. There are plenty of non-emissions-based uses for coal where CO2 is not the end product. What excites me the most is producing high-value carbon products and seeing carbon take a much stronger position in the renewable energy sector.”
Thinking differently about coal and carbon
Relatively recently, Rohan developed a passion for what he calls a ‘big ticket item’.
“I love carbon. Carbon is beautiful and remarkable. It does things that other materials can’t, and I’m passionate about finding uses for it that don’t involve emissions,” he says.
With his vision of transforming industries, Rohan is hoping to invigorate the coal and biomass industries, the energy storage industry and both sides of politics.
“People talk about ‘green steel’ and ‘electrifying the grid’, but they haven’t thought about where carbon sits in some of these high-value applications,” explains Rohan.
“A critical need going forward is re-evaluating how we use carbon, and how we currently use carbon needs to change. A rethink is needed at the highest levels.”
According to Rohan, there are futuristic uses for carbon that don’t even exist yet. There is huge value in making carbon fibre cheaper so it can be used in industries such as vehicle and building. And the cheaper carbon is, the more widely used it can be.
The Australian carbon industry
A current stumbling block is that we don’t really have carbon manufacturing industries in Australia, and we import the products we require from elsewhere. For Rohan, the idea of making those products – particularly those related to energy storage – here in Australia is an exciting and attractive proposition.
“Carbon is already used in supercapacitors,” he explains. “We could potentially make carbon-based supercapacitors for half the price of lithium and use far less energy doing so. It will enable more efficient energy storage and its lifetime will be decades longer.”
Carbon is also used in electrodes for lithium ion-batteries, redox flow batteries, electric arc furnaces, aluminium manufacture and thermal energy storage.
“Clearly, we have the raw material, we have the infrastructure, and we want those jobs here in the Hunter. Again, it’s all about finding other uses for our natural product and reimagining our primary industry for future supply chains in Australia.”
In Rohan’s experience, people often question what kind of jobs will be available if we shut down the Hunter’s coal mining industry. Rather than shut it down, Rohan proposes repurposing the workforce’s existing skills.
Transforming coal and biomass into carbon will still involve solids handling at the front end, thermal engineering and heat transfer, and gas treatment at the back end. In essence, if the skills currently utilised in operating power stations were overlaid with those required to transform coal into carbon, it’s a perfect fit – a perfect overlay of skills.
So rather than continuing to send our coal overseas, processing it here will mean more jobs, not fewer.
“Our Hunter mines could supply the world’s carbon fibre and tonnes upon tonnes of supercapacitors. A far smarter way of operating would be not having all the jobs centred on digging up coal but making products and treating it for different end uses,” observes Rohan.
“The same is true for our bio-energy resources. We simply haven’t established the pathways to achieving their highest value.”
However, according to Rohan, the most significant problem is that we don’t yet have advanced manufacturing capability in the Hunter. Along with our carbon capacity, it’s the next vital step to transitioning away from fossil fuels and forging our way in renewables.
A practice-based approach to teaching
Rohan calls himself a ‘hands-on experimentalist’: taking an idea, designing and developing it into something practical and then (potentially) commercialising it. He believes there’s no point doing things that don’t have a value to society and the best route for doing that is through industry engagement.
“There’s really nothing like taking a concept and building an experimental system that works like I expected it to which tells my industry partners something they didn’t know before,” he enthuses.
He has done this with thermocalorimetry (heats of reaction), volatile evolution, molecular changes in coal and biopitch, and extrusion systems for shaped carbon.
That experimental and practical application approach is also front and centre of his approach to teaching, which he knows helps students become job ready.
“I really want to give students a solid understanding of industry before they enter it. Engineering at university is so theoretical that I think they crave hands-on experiences. I think interacting with industry so much gives me a great basis to teach our graduates,” he states.
“I hope that through my teaching, I get to train the next generation of engineers to go out and create new renewable energy industries in the Hunter. The University and the Hunter are a perfect breeding ground for a new type of engineer, and I’m fortunate to be a part of that.”
Re-thinking carbon in the renewable energy sector
Dr Rohan Stanger is driven to find new and clever ways to use our carbon resources. With a career in coal and biomass research, he is well placed to see a global energy future that is founded on carbon – but not in the ways we are used to.
Career Summary
Biography
Dr Stanger is a Senior Lecturer with 10 years experience working in the fields of carbon manufacturing, CO2 capture and mineral processing. He is a principal researcher of the Priority Research Centre for Frontier Energy Technology and Utilisation.
Stanger has significant expertise in the transformation of coal and biomass into carbon products. He has extensively published in the fundamentals of pyrolysis (heating without oxygen) and is highly engaged with industry in technology development. Using coal to produce high value carbon products such as carbon fibre and supercapacitors; offers a number of opportunities for lowering the cost of manufacture and (ironically) the industrial CO2 emissions.
Carbon is used in a wide variety of industrial electrodes including Electric Arc Furnace (EAF) steel making, aluminium manufacture, Lithium batteries, supercapacitors and potentially in hydrogen production and electrowinning of metals. Stanger is currently working with industry on bio-based carbon electrodes for sacrificial uses (EAF, aluminium and hydrogen) to better utilise our local bio-energy resources and lower industry emissions. Stanger’s novel research into coal-based electrodes for supercapacitors and redox flow batteries has the potential for large scale energy storage at lower cost than current technologies. Lowering the cost of energy storage is a key driver for realising 100% renewable electricity and coal might just have the scale needed for net zero emissions by 2050.
Stanger has published extensively in oxyfuel combustion and CO2 processing (including several book chapters and highly cited review articles). Oxyfuel combustion is a CO2 capture technology that recycles flue gas and increases CO2 purity. Stanger begun his post-doctoral research working as the Technical Secretary of the Asia Pacific Partnership for Oxyfuel Working Group- a high level technology development group dedicated to information exchange and capacity building. His research expertise into gas cleaning (SOx, NOx, mercury) during CO2 compression has led him to work on the largest technology demonstration in the world, the Callide Oxyfuel Project. The technology can be used to reduce industrial emissions (as CCS) and is applicable to gas cleaning in hydrogen processing (a high-cost aspect).
Stanger’s research into mineral processing includes the purification of coal macerals (for carbon manufacture), fly ash utilisation (for Rare Earth Recovery), PFAS removal from soil and the development of particle characterisation technology. Coal macerals are the components of coal that impart its coking properties and are critical for fusing and shaping the final carbon product. Stanger’s research has demonstrated how these components can be purified as particles using mineral separation technologies and studied the impact on final carbonisation properties. With expertise in a wide range of different particle analysis techniques, Stanger is also currently developing a particle profiling technology that is applicable to a wide range of critical mineral processes.
Stanger is a natural collaborator and an experimentalist at heart. In partnership with over 50 research colleagues from industry and academia, he has obtained over $5M in funding in a diverse field covering the entire supply chain from resource preparation, thermal processing, product analysis to by-product characterisation. Stanger has developed a range of highly novel analytical and thermo-analytical systems for understanding resource transformation for the needs of the 21st century.
Stanger Research expertise
- Advanced carbon manufacturing with coal and bio-energy (carbon fibres, electrodes for energy storage, green steel and hydrogen)
- Low emission coal (oxyfuel combustion, post-combustion capture, CO2 processing)
- Mineral processing (coal maceral separation, rare earth recovery from fly ash, PFAS removal from soil)
- Analytical and thermo-analytic system development (novel methods for calorimetry, volatile release and particle characterisation)
Qualifications
- Doctor of Philosophy, University of Newcastle
- Bachelor of Engineering (Chemical Eng ) (Honours), University of Newcastle
Keywords
- Carbon manufacturing
- NOx, SOx, Mercury
- coal & biomass pyrolysis
- coking
- flue gas compression
- maceral separation
- oxyfuel combustion
- thermoplasticity
Fields of Research
Code | Description | Percentage |
---|---|---|
400401 | Carbon capture engineering (excl. sequestration) | 10 |
401904 | Mineral processing/beneficiation | 30 |
401908 | Pyrometallurgy | 60 |
Professional Experience
UON Appointment
Title | Organisation / Department |
---|---|
Research Associate | University of Newcastle School of Engineering Australia |
Senior Lecturer | University of Newcastle School of Engineering Australia |
Academic appointment
Dates | Title | Organisation / Department |
---|---|---|
12/1/2009 - 18/12/2015 |
Post Doctoral Researcher I have focussed on oxyfuel combustion and coal pyrolysis during my post-doctoral research. |
University of Newcastle - Faculty of Engineering & Built Environment |
Professional appointment
Dates | Title | Organisation / Department |
---|---|---|
18/11/2002 - 18/12/2005 |
Coal Quality Engineer I worked as a Coal Quality Engineer for both SGS and ACIRL, managing test campaigns and performing diagnostics on unit operations at Hunter Valley Coal Preparation Plants |
SGS, ACIRL Australia |
Publications
For publications that are currently unpublished or in-press, details are shown in italics.
Chapter (3 outputs)
Year | Citation | Altmetrics | Link | ||||||||
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2013 |
Wall T, Stanger R, McDonald D, 'Coal-fired oxy-fuel technology for carbon capture and storage', Oxygen-Enhanced Combustion, Second Edition 631-648 (2013) While the association of rising atmospheric CO2levels and global warming is debated, the predicted increases in world population and energy demand (to 2030) have left little doubt... [more] While the association of rising atmospheric CO2levels and global warming is debated, the predicted increases in world population and energy demand (to 2030) have left little doubt as to the need for coal as a stable energy source in the near future. CCS is one mitigation strategy that would allow the continued utilization of coal reserves and current infrastructure while also limiting anthropogenic CO2emissions. This process involves capturing and purifying CO2from the combustion of fossil fuels and storing it in deep underground reservoirs such as saline aquifers.
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2013 |
Liu Y, Zhou H, Liu YH, Stanger R, Elliot L, Wall T, Cen KF, 'The Study of Calcium Sulfate Decomposition by Experiments Under O2/CO2 Atmosphere', Cleaner Combustion and Sustainable World, Springer, Berlin 323-329 (2013) [B1]
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2011 |
Wall TF, Stanger RJ, 'Industrial scale oxy-fuel technology demonstration', Oxy-fuel combustion for power generation and carbon dioxide (CO2) capture, Woodhead Publishing, Oxford 54-75 (2011) [B1]
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Journal article (58 outputs)
Year | Citation | Altmetrics | Link | ||||||||
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2023 |
Palozzi J, Bailey JG, Tran QA, Stanger R, 'A characterization of rare earth elements in coal ash generated during the utilization of Australian coals', INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION, 43 2106-2135 (2023) [C1]
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2021 |
Yan Y, Qi Y, Marshall M, Jackson WR, Stanger A, Tran QA, et al., 'Characterisation of coal density fractions separated from Victorian brown coal by reflux classification', FUEL, 292 (2021) [C1]
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2019 |
Xie W, Stanger R, Tran QA, Mahoney M, Lucas J, Yu J, Wall T, 'Impact of large sized inertinite particles on thermo-swelling and volatile release of coking coals', Fuel Processing Technology, 193 63-72 (2019) [C1]
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2019 |
Zabihi O, Shafei S, Fakhrhoseini SM, Ahmadi M, Ajdari Nazarloo H, Stanger R, et al., 'Low-Cost Carbon Fibre Derived from Sustainable Coal Tar Pitch and Polyacrylonitrile: Fabrication and Characterisation.', Materials (Basel, Switzerland), 12 (2019) [C1]
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2019 |
Lee S, Yu J, Mahoney M, Tremain P, Moghtaderi B, Tahmasebi A, et al., 'Study of chemical structure transition in the plastic layers sampled from a pilot-scale coke oven using a thermogravimetric analyzer coupled with Fourier transform infrared spectrometer', Fuel, 242 277-286 (2019) [C1]
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2019 |
Tran QA, Stanger R, Xie W, Smith N, Lucas J, Wall T, 'An investigation of the molecular change in coal maceral concentrates prepared under dimensional heating condition', Fuel Processing Technology, 189 80-88 (2019) [C1]
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2019 |
Lee S, Yu J, Mahoney M, Tahmasebi A, Stanger R, Wall T, Lucas J, 'In-situ study of plastic layers during coking of six Australian coking coals using a lab-scale coke oven', Fuel Processing Technology, 188 51-59 (2019) [C1]
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2018 |
Liu D, Jin J, Xiong Z, Stanger R, Wall T, 'Dynamic measurement of liquid-phase mass transfer coefficient and significance on the SO2 absorption rate', Asia-Pacific Journal of Chemical Engineering, 13 (2018) [C1]
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2018 |
Xie W, Stanger R, Tran QA, Smith N, Wall T, Lucas J, 'Impact of Coal Pyrolysis Products as a Rheological Additive on Thermoplasticity of a Coking Coal', Energy and Fuels, 32 4382-4390 (2018) [C1] Thermoplasticity is a determining factor for the development of the coke structure and coke strength. Mobile phase, whether vaporizable or not, may significantly affect thermoplas... [more] Thermoplasticity is a determining factor for the development of the coke structure and coke strength. Mobile phase, whether vaporizable or not, may significantly affect thermoplasticity during coal coking. This work studies the effect of the mobile phase, including the volatile tar and extractable metaplast generated from one bituminous coking coal, on the thermo-swelling of the raw coal. The volatile tar was collected when the raw coal was heated from room temperature to 450 °C at a heating rate of 5 °C/min, while the metaplast was extracted from the heated char. Molecular properties of the tar and metaplast were characterized using a laser desorption/ionization-time of flight-mass spectrometry technique (LDI-TOF-MS). Thermo-swelling of the raw coal and its blends with the volatile tar and extractable metaplast was investigated using a computer-aided thermal analysis (CATA). The volatile (C and H) evolution rate of the heating coal samples was tracked using a dynamic elemental thermal analysis (DETA), and the weight loss rate was investigated using thermogravimetric analysis (TGA). It was found that the extracted metaplast has a higher molecular weight distribution than that of the volatile tar. The swelling and thermal changes of the heating coal increased with the addition of tar or metaplast. The weight loss rate prior to coal swelling increased with the additives, while the raw coal showed a higher volatile release after maximum swelling than the blends. The addition of metaplast into the raw coal led to greater swelling, increased exothermicity, and resulted in a higher thermal conductivity than the addition of volatile tar during the primary devolatilization, particularly when the additive was 20 wt % in the blend. Different influences of thermoplasticity of the blends indicated that the interactions between the additive and the coal are affected by the molecular weight distribution of the additive. These findings will aid in the selection of the additive for improving thermoplasticity of low-caking coals to benefit coke production.
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2018 |
Tran QA, Stanger R, Xie W, Smith N, Lucas J, Wall T, 'Thermoplastic development of coking and non-coking maceral concentrates and molecular weight distribution of their pyrolysis products', Journal of Analytical and Applied Pyrolysis, 129 72-85 (2018) [C1] A suit of nitrogen-dried maceral concentrates derived from a coking coal and a non-coking coal was investigated to reveal the impact of varying coal main organic constituent, the ... [more] A suit of nitrogen-dried maceral concentrates derived from a coking coal and a non-coking coal was investigated to reveal the impact of varying coal main organic constituent, the vitrinite, on their thermoplasticity and pyrolysis products. The thermoplastic development of maceral concentrates during pyrolysis was evaluated via their thermo-swelling and dynamic volatile release. These measurements were then linked to molecular weight distributions of vaporised tars and tetrahydrofuran (THF) extracts obtained from heat-treated samples. Regardless of the vitrinite content, only coking macerals agglomerated during pyrolysis while non-coking macerals retained their powdered structure. This result indicated that although concentrating the vitrinite could alter the extent of coal thermoplasticity, such process could not grant or remove thermoplasticity from a maceral concentrate. This was reflected in the similar molecular weight distribution of solvent extracts produced between the parent coals and their concentrates. In specific, coking concentrates generated extractable materials with a relatively more complex structure, consisting of a bimodal molecular weight distribution with 12¿14 Da repeating structures at <600 Da and 24 Da reoccurring units between 600 and ~1500 Da. Solvent extracts isolated from non-coking concentrates, on the other hand, possessed a unimodal molecular weight distribution with only 12¿14 Da repeating structures extending to ~800 Da. The absence of high-range molecular weight materials (the 24 Da repeating units) in non-coking coal and its concentrates was speculated to play a vital role to their inability to exhibit thermoplastic behaviour during pyrolysis.
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2018 |
Allen JA, Glenn M, Hapugoda P, Stanger R, O'Brien G, Donne SW, 'An investigation of mineral distribution in coking and thermal coal chars as fuels for the direct carbon fuel cell', Fuel, 217 11-20 (2018) [C1]
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2018 |
Stanger R, Tran QA, Browne M, Lucas J, Naebe M, Height M, Wall T, 'Evaluating the Thermal Extrusion Behavior of a Coking Coal for Direct Carbon Fiber Production', Energy and Fuels, 32 4528-4537 (2018) [C1] This study outlines a novel thermal extrusion system and methodologies for evaluating the potential to manufacture carbon fiber directly from thermoplastic coals. It is envisioned... [more] This study outlines a novel thermal extrusion system and methodologies for evaluating the potential to manufacture carbon fiber directly from thermoplastic coals. It is envisioned that the intermediate product will be further refined by spinning down to commercial fiber sizes and thermal annealing. Commercial melt spinning is used for manufacturing carbon fibers from pitch-based feed materials, and a similar approach for plasticized coal is likely to be a lower risk option. However, the critical aspect of using coal for this purpose is its behavior inside a higher pressure extrusion unit and the need to characterize its rheology. This work has evaluated the thermoplastic development needed for extrusion of a single coking coal in terms of the heating rate and residence time and characterized the extruded fiber product. It was observed that the coal underwent a preliminary softening phase prior to extruding at significant speed. This phase appeared necessary to develop the critical viscosity for extrusion and was affected by the heating rate. The size of the orifice that the coal was extruded through also impacted the point of extrusion, with the smaller 0.5 mm hole requiring lower viscosity to be developed to flow at steady state. Other operating modes were developed to examine the thermoplastic properties of the coal over an extended residence time, and it was found that the coal could be maintained up to 60 min at selected temperatures. The product fiber was larger than the commercial size, appearing slightly larger than the orifice size. Internal porosity and surface roughness were observed as coal-based fiber qualities in need of controlling, along with the mineral content and size.
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2018 |
Liu D, Jin J, Gao M, Xiong Z, Stanger R, Wall T, 'A comparative study on the design of direct contact condenser for air and oxy-fuel combustion flue gas based on Callide Oxy-fuel Project', International Journal of Greenhouse Gas Control, 75 74-84 (2018) [C1]
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2017 |
Stanger R, Tran QA, Smith N, Kennedy E, Stockenhuber M, Lucas J, Wall T, 'Separation and analysis of high range extractable molecules formed during coal pyrolysis using coupled thin layer chromatography-imaging mass spectrometry (TLC-LDI-IMS)', FUEL, 196 269-279 (2017) [C1]
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2016 |
Stanger R, Tran QA, Xie W, Smith N, Lucas J, Yu J, et al., 'The use of LDI-TOF imaging mass spectroscopy to study heated coal with a temperature gradient incorporating the plastic layer and semi-coke', Fuel, 165 33-40 (2016) [C1] This work has used high range imaging mass spectrometry to study a coal sample that has undergone heating with a temperature gradient. A custom made hotplate was heated to 1000°C ... [more] This work has used high range imaging mass spectrometry to study a coal sample that has undergone heating with a temperature gradient. A custom made hotplate was heated to 1000°C and the coal was allowed to heat naturally through conduction to produce a large thermal gradient typical of conditions in a coke oven. The sample was quenched, sectioned and analysed using laser desorption time of flight imaging mass spectrometry (LDI-TOF-IMS) to study the molecular changes that occur within the plastic layer and in the semi-coke. The raw coal was observed to have a molecular weight range between 500 and 20,000 Da with a peak occurring at 2000 Da. The plastic layer was observed to have a prevalence for increasing 500-1000 Da structures though this formed part of the larger molecular weight range. Resolidification of the plastic layer coincided with a rise in 4000 Da structures. The semi-coke spectrum had a series of repeating peaks separated by 24 Da extending from 1000 Da to 3000 Da. This was considered evidence of broad molecular ordering. A second phenomenon was observed in the semi-coke associated with low range molecular weights (50-300 Da). This appeared as high intensity signals in a molecular range typically considered as ion fragments (being too low in size to remain in the high vacuum environment). It was speculated that these low range structures may be associated with the coking of volatile tars exiting the hot-side of the plastic layer through high temperature semi-coke. Overall, this preliminary work provides a novel methodology to study the heating impacts during coking on a molecular level.
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2016 |
Quang AT, Stanger R, Xie W, Smith N, Lucas J, Wall T, 'Impacts of Mild Pyrolysis and Solvent Extraction on Coking Coal Thermoplasticity', ENERGY & FUELS, 30 9293-9302 (2016) [C1]
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2016 |
Stanger R, Quang AT, Attalla T, Smith N, Lucas J, Wall T, 'The pyrolysis behaviour of solvent extracted metaplast material from heated coal using LDI-TOF mass spectroscopy measurements', JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, 120 258-268 (2016) [C1]
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2016 |
Tran QA, Stanger R, Xie W, Lucas J, Yu J, Stockenhuber M, et al., 'Maceral separation from coal by the Reflux Classifier', FUEL PROCESSING TECHNOLOGY, 143 43-50 (2016) [C1]
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2016 |
Stanger R, Belo L, Ting T, Spero C, Wall T, 'Mercury and SO3 measurements on the fabric filter at the Callide Oxy-fuel Project during air and oxy-fuel firing transitions', INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL, 47 221-232 (2016) [C1]
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2016 |
Liu D, Wall T, Stanger R, 'CO2 quality control in Oxy-fuel technology for CCS: SO2 removal by the caustic scrubber in Callide Oxy-fuel Project', INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL, 51 207-217 (2016) [C1]
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2016 |
Liu D, Xiong Z, Jin J, Wall T, Stanger R, 'Conceptual design of a packed bed for the removal of SO2 in Oxy-fuel combustion prior to compression', INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL, 53 65-78 (2016) [C1]
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2016 |
Xie W, Wall T, Lucas J, Mahoney M, Stanger R, 'Thermo-swelling Behavior of Australian Coking Coals from Different Basins: Relating to Rank and Maceral Compositions', ENERGY & FUELS, 30 10126-10135 (2016) [C1]
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2016 |
Xie W, Wall T, Lucas J, Mahoney M, Stanger R, 'Chemical Changes of Australian Coking Coals from Different Basins with Various Ranks and Maceral Compositions: Linking to Both Physical and Thermal Changes', ENERGY & FUELS, 30 10136-10147 (2016) [C1]
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2016 |
Tran QA, Stanger R, Xie W, Smith N, Lucas J, Wall T, 'Linking Thermoplastic Development and Swelling with Molecular Weight Changes of a Coking Coal and Its Pyrolysis Products', Energy and Fuels, 30 3906-3916 (2016) [C1] The thermoplastic development of an Australian coking coal was investigated by linking thermal swelling with changes in molecular weight of its pyrolysis products. Coal thermal sw... [more] The thermoplastic development of an Australian coking coal was investigated by linking thermal swelling with changes in molecular weight of its pyrolysis products. Coal thermal swelling was investigated together with volatiles evolution and characterization of generated volatiles (including volatile tar and light gases). The molecular weight distributions of coal and its solvent extracts were measured by using laser desorption/ionization time of flight mass spectroscopy (LDI-TOF-MS). Solvent extraction (by acetone and tetrahydrofuran (THF)) was initially used on the raw coal to aid interpretation of thermoswelling by volumetric expansion measurements. The removal of ~2% solvent-soluble matter from the raw coal (the mobile phase) reduced its swelling extent during heating by up to 22% (from 86% down to 68% and 64% for acetone- and THF-residues, respectively). Volatile release after solvent treatment remained unaffected. This suggested that the majority of the coals swelling behavior could be attributed to the formation of heat-generated liquid matter (the Metaplast) during pyrolysis. Broad molecular weight changes were found in the solvent extractable component (metaplastic material extracted by acetone and THF) of the semicoke. Prior to softening (350 °C), the extractable components were composed of molecules mainly <500 Da. The upper limit in molecular weight distribution of solvent extracts increased significantly to 1800 Da at the onset of swelling (400-450 °C) and decreased back to ~500 Da at the end of swelling (500 °C). The spectra showed that the volatile tar and acetone extract (the light solvent extract) consisted of similar repeating structures separated 12-14 Da apart. As the treatment temperature increased, the molecular weight distribution of volatile tar increased in molecular mass, approaching that of the acetone extract distribution (~600 Da). The THF extract molecular weight distribution was a mixture of 12-14 and 24 Da repeating units which only became apparent at molecular weight above 600 Da. The LDI-TOF-MS analysis of the solid coal showed that it contained a distribution of molecular structures centered at 2000 Da and spanning between 500 and 7000 Da. This raw coal spectrum also contained multiple repeating mass lines every 24 Da apart. Overall, these results suggested that the coal consisted of complicated structures which subsequently degraded into smaller fragments capable of forming a complex intermediate liquid phase and a distribution of lighter volatile tar species.
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2016 |
Belo LP, Elliott LK, Stanger RJ, Wall TF, 'Impacts of Sulfur Oxides on Mercury Speciation and Capture by Fly Ash during Oxy-fuel Pulverized Coal Combustion', Energy and Fuels, 30 8658-8664 (2016) [C1] Coal-fired utility boilers are the single largest anthropogenic source of mercury emissions. Mercury is a naturally occurring trace element in coal and, when combusted, may exist ... [more] Coal-fired utility boilers are the single largest anthropogenic source of mercury emissions. Mercury is a naturally occurring trace element in coal and, when combusted, may exist in three different forms: Hg0, Hg2+, or Hg particulate. During oxy-fuel combustion, impurity concentrations, such as SOx, NOx, and Hg, can be up to 4 times higher than concentrations in air combustion. An increased mercury concentration is of concern because mercury is known to attack aluminum heat exchangers required in the compression of CO2. As a result of the elevated concentrations during oxy-fuel conditions, interactions of Hg and SOx were investigated in this study to verify if there is any competition between SOx and Hg. The effect of Hg, SOx, H2O, and temperature on the native capture of Hg by fly ash was assessed using a quartz flow reactor packed with fly ash to simulate a bag filter. Doubling Hg in the system from 5 to 10 µg/Nm3 doubled the amount of Hg captured in the fly ash from 1.6 to 2.8% and increased the amount of Hg unaccounted from 5.8 to 18.1%. Increased SO2 decreased the proportion of Hg0 in the flue gas. The temperature in the bag filter was found to have a large impact on the mercury capture by fly ash. As the temperature was increased from 90 to 200 °C, Hg0 in the flue gas was found to increase from 77.9 to 98.3%, indicating better capture of Hg at lower temperatures.
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2015 |
Xie W, Stanger R, Lucas J, Mahoney M, Elliott L, Yu J, Wall T, 'Thermo-swelling Properties of Particle Size Cuts of Coal Maceral Concentrates', Energy & Fuels, 29 4893-4901 (2015) [C1]
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2015 |
Liu D, Wall T, Stanger R, 'CO2 quality control through scrubbing in oxy-fuel combustion: Rate limitation due to S(IV) oxidation in sodium solutions in scrubbers and prior to waste disposal', INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL, 39 148-157 (2015) [C1]
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2015 |
Liu D, Wall T, Stanger R, Luo C, 'CO Oxy-fuel combustion is a promising CCS technology which is being demonstrated prior to commercialization. While the flue gas in oxy-fuel combustion is concentrated in CO2, it cont... [more] Oxy-fuel combustion is a promising CCS technology which is being demonstrated prior to commercialization. While the flue gas in oxy-fuel combustion is concentrated in CO2, it contains impurities such as SO2. The elimination of SO2 can provide a clean CO2 stream ready for storage. SO2 is commonly washed by sodium based spray towers with high efficiency but CO2 impacts are significant. A theoretical model was developed based on the two-film mass transfer model, and considering both the SO2 and CO2 reactions with sodium solutions. This model was firstly used to simulate the dynamic experimental results reported in our previous paper to confirm its applicability. With this model, simulations then were carried out on the absorption rate of SO2 into droplets with three droplet sizes: 100µm, 500µm and 1000µm, one sodium concentration of 0.08M (back calculated from liquid analysis), a range of pH from 4 to 12.5 and a range of SO2 concentrations from 19ppm to 1500ppm.Simulations focus on the impacts of droplet position, gas phase CO2 and droplet size on the absorption rate of SO2. These impacts are closely related with pH values. Taking a typical pH of 7 for example, the absorption rates of SO2 for droplets close to nozzles which move relative to the gas are significantly higher than these below nozzles which are at the terminal velocities, and the differences between two positions are larger for higher concentrations of SO2 with the concentrations range from 200ppm to 1500ppm. CO2 has a negative impact on the absorption rate of SO2 through reducing the gas phase mass transfer coefficient of SO2 in the gas phase controlled region and also through generating more acidic conditions at the liquid phase interface. Reducing the droplet size from 500µm to 100µm has a more significant improvement on the absorption rate of SO2 than from 1000µm to 500µm. Result: have implications in the controlling region and the operational liquid pH region. The controlling region is related to the droplet position. The droplets close to nozzles are located in the mixed controlled region or the gas film controlled region; and the droplets below nozzles can be located in three regions depending on the concentration of SO2 and pH. A lower concentration of SO2 and a higher pH are favourable for the absorption rates of SO2 to be located in the gas phase controlled region.The operational pH of the exit liquid may be established based on two criteria: a reasonable absorption rate of SO2 and a sodium reagent loss as NaHCO3. The optimal operational region is then in the region 2 where the absorption rate of SO2 is still high and reagent use is minimized. The region 2 can be further divided into four sub regions. In the region 2-1 and the region 2-2, the absorption rate is moderate, but there is too much Na+ wasted for CO2 capture. In the region 2-3, there is a moderate amount of Na+ wasted for CO2 capture. In the region 2-4, Na+ wasted for CO2 capture is minimized, but the effective ratio of Na+ is still not the maximum.The necessary operational pH region graph can be used to guide the operation of a spray tower.
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2015 |
Stanger R, Ting T, Belo L, Spero C, Wall T, 'Field measurements of NO x and mercury from oxy-fuel compression condensates at the Callide Oxyfuel Project', International Journal of Greenhouse Gas Control, 42 485-493 (2015) [C1]
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2015 |
Xie W, Stanger R, Wall TF, Lucas JA, Mahoney MR, 'Associations of physical, chemical with thermal changes during coking as coal heats - Experiments on coal maceral concentrates', Fuel, 147 1-8 (2015) [C1] Dynamic measurements of physical, chemical and thermal changes in the transformation of coal maceral concentrates were made during heating at a rate of 10°C/min to 1000°C. The end... [more] Dynamic measurements of physical, chemical and thermal changes in the transformation of coal maceral concentrates were made during heating at a rate of 10°C/min to 1000°C. The endothermic and exothermic processes were identified by measurements of apparent specific heat while the fluidity was indicated by the estimated thermal conductivity. Measurements of swelling and bed permeability were made, with continuous quantitative elemental analysis of gases and tars as they evolved. Data for two coal concentrates of high and moderate vitrinite indicate that the same reactions and events are occurring for the two samples, but to a greater extent for the high vitrinite sample. The research has noted the significance of evolved tars in the early events, being the lowest temperature event identified, with rapid tar evolution prior to the onset of swelling associated with permeability change. Further tar release and gas evolution is associated with a rapid swelling event, this event being substantially greater for the high vitrinite sample. The data has also quantified contraction at higher temperatures following swelling which is associated with the release of hydrogen containing gases. Evolved tars from the high vitrinite sample showed elevated H/C ratio indicating that vitrinite tars appear to be more aliphatic than those evolved from inertinite. A comparison of measured swelling with estimated volumetric flow rate of the volatiles has indicated that thermo-expansion of coal utilised up to 21% of the volatiles to drive bubble growth. This utilisation rate varied significantly across the plastic temperature range.
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2015 |
Stanger R, Borrowdale J, Smith N, Xei W, Tran QA, Lucas J, Wall T, 'Changes in Solvent-Extracted Matter for Heated Coal during Metaplast Formation Using High-Range Mass Spectrometry', Energy and Fuels, 29 7101-7113 (2015) [C1] A fundamental study was undertaken to characterize the changes in solvent-extracted matter formed during the thermoplastic phase of coking. Coal samples were heated to fixed tempe... [more] A fundamental study was undertaken to characterize the changes in solvent-extracted matter formed during the thermoplastic phase of coking. Coal samples were heated to fixed temperatures within the pyrolytic plastic range of 400-500 °C, and the volatile material was extracted in a two-stage extraction with acetone (light extract) and then tetrahydrofuran (THF heavy extract). The extracted material was analyzed using laser desorption ionization (time-of flight) mass spectrometry (LDI-TOF-MS). The LDI-TOF-MS results showed that three extracted fractions could be broadly classified here as overlapping molecular weight ranges as volatile tars (200-450 Da), light acetone-soluble extract (250-500 Da), and heavy THF-soluble extract (300-1200 Da). A further class of compounds was identified from THF extraction of the raw coal in the range of 600-2500 Da that required higher laser powers to ionize and was not observed in the thermally generated samples. Negligible changes were observed in the composition of the acetone-soluble extracts with temperature, while the THF-soluble extract showed smaller proportions of larger molecules with higher treatment temperatures. It was observed that each molecular weight spectrum showed repeating structural units forming peaks every 12-14 Da (homologous series), with distributions of species around each peak. The volatile tar and acetone-soluble material shared common repeating structures also evident in the raw coal extract. This suggested that the material in this fraction was thermally stable over the analyzed temperature range. The repeating features of the THF-soluble extract species appeared to be structurally different. Overall, this work has indicated that development of extractable matter expected to be associated with fluidity during coking and subsequent resolidification relies on <1000 Da compounds. The results showed that >600 Da compounds are thermally sensitive. Compounds with molecular weights of <450 Da may be removed during coking, possibly as a vapor, resulting in a reduction in fluidity. There has been speculation that the thermally stable (acetone-soluble) material identified in both raw coal extract and those from thermally treated samples may be capable of undergoing a phase change to initiate plastic deformation.
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2015 |
Stanger R, Wall T, Spörl R, Paneru M, Grathwohl S, Weidmann M, et al., 'Oxyfuel combustion for CO2 capture in power plants', International Journal of Greenhouse Gas Control, 40 55-125 (2015) [C1]
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2015 |
Stanger R, Ting T, Spero C, Wall T, 'Oxyfuel derived CO2 compression experiments with NOx, SOx and mercury removal-Experiments involving compression of slip-streams from the Callide Oxyfuel Project (COP)', International Journal of Greenhouse Gas Control, 41 50-59 (2015) [C1]
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2015 |
Liu D, Wall T, Stanger R, 'CO Oxy-fuel combustion is a promising CCS technology which is being demonstrated prior to commercialisation. While the flue gas in oxy-fuel combustion is concentrated in CO2, it cont... [more] Oxy-fuel combustion is a promising CCS technology which is being demonstrated prior to commercialisation. While the flue gas in oxy-fuel combustion is concentrated in CO2, it contains impurities such as SO2. The elimination of SO2 can provide a clean CO2 stream ready for storage. This paper is to understand the absorption of SO2 in scrubbing relevant to those used in oxy-fuel technology.Steady state experiments were conducted in a continuous well stirred reactor to understand the absorption rate of SO2/CO2 into a total concentration of 0.28M of mixtures of NaHSO3 and NaHCO3 simulating liquids formed by scrubbers using NaOH as the reagent at solution pH values from 4 to 7 with the exiting gas concentrations of SO2 from 19ppm to 1500ppm and a constant CO2 concentration of 70%. Online measurement included gas phase SO2 and liquid pH, and offline measurement included CO2 (aq), HCO3-, S (IV), SO32- and S (VI) after each experiment. Three aspects investigated were the impacts of pH on the solution chemistry, the significance of solution pH and the concentration of gas phase SO2 on the absorption rate of SO2.The total sulphur concentration in liquid was found to be related to the effectiveness of Na+. The effective ratio of Na+ can be defined as the total sulphur to Na+ ratio and this effectiveness ratio of Na+ is pH dependent. At pH<5, Na+ is 99% effective. It reduces dramatically from 99% at a pH 5 to less than 15% at pH above 7. With regard to carbon based species also absorbed, super saturation of CO2 (aq) was observed at pH>5.5. The concentration of HCO3- increases dramatically above pH 6 and below this pH, the concentration of HCO3- is negligible.The absorption rate of SO2 was found to increase with pH with some increase with the concentration of SO2. The operational pH window for scrubbing may be defined by an upper limit pH where the absorption rate of SO2 starts to decreases from the maximum absorption rate of SO2 and the lower limit pH where the absorption rate of SO2 reduces to half of the maximum absorption rate of SO2. Both the upper limit and the lower limit decrease initially and stay stable with the concentration of SO2. This decrease is caused by the reversible reaction of the hydrolysis of SO2 and confirmed by equilibrium experiments of SO2 and sodium solutions. Operation within region 2 (pH 5-6) is recommended, depending on the scrubber design. The operation exit pH of the produced liquid can be varied within the region.The absorption rates of SO2 obtained in the steady state experiments were predicted by a model based on the instantaneous reaction assumption. This model generally overestimates the absorption rates of SO2 at pH values below 6 indicating a kinetic limitation of SO2 and water reaction at low pH values. The analysis on the controlling regions indicates that the gas side mass transfer resistance decreases with the concentration of SO2. Liquid side resistance becomes more important at a lower pH and a higher concentration of SO2.
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2014 |
Stanger R, Xie W, Wall T, Lucas J, Mahoney M, 'Dynamic measurement of coal thermal properties and elemental composition of volatile matter during coal pyrolysis', Journal of Materials Research and Technology, 3 2-8 (2014) A new technique that allows dynamic measurement of thermal properties, expansion and the elemental chemistry of the volatile matter being evolved as coal is pyrolysed is described... [more] A new technique that allows dynamic measurement of thermal properties, expansion and the elemental chemistry of the volatile matter being evolved as coal is pyrolysed is described. The thermal and other properties are measured dynamically as a function of temperature of the coal without the need for equilibration at temperature. In particular, the technique allows for continuous elemental characterisation of tars as they are evolved during pyrolysis and afterwards as a function of boiling point. The technique is demonstrated by measuring the properties of maceral concentrates from a coal. The variation in heats of reaction, thermal conductivity and expansion as a function of maceral composition is described. Combined with the elemental analysis, the results aid in the interpretation of the chemical processes contributing to the physical and thermal behaviour of the coal during pyrolysis. Potential applications in cokemaking studies are discussed. © 2013 Brazilian Metallurgical, Materials and Mining Association. Published by Elsevier Editora Ltda. All rights reserved.
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2014 |
Spörl R, Walker J, Belo L, Shah K, Stanger R, Maier J, et al., 'SO The sulfur oxide (SOx) concentrations during oxy-fuel combustion are generally higher compared to conventional air firing. The higher SO x concentrations, particularly sulfur trio... [more] The sulfur oxide (SOx) concentrations during oxy-fuel combustion are generally higher compared to conventional air firing. The higher SO x concentrations, particularly sulfur trioxide (SO3) in combination with high concentration of water in the recycled flue gas, increase the sulfuric acid dew point temperature in oxy-fuel fired systems, thereby increasing allowable flue gas temperatures and reducing the thermal efficiency of a power plant. This paper presents results of experiments carried out at a 20 kW once-through combustion rig of the Institute of Combustion and Power Plant Technology (IFK) of the University of Stuttgart simulating different extents of oxy-fuel recycle gas cleaning by impurities injection to the oxidant gas of a once-through combustion reactor. Three Australian coals that have previously been tested under air and oxy-fuel conditions at the Aioi furnace of IHI in Japan were used in the experiments. The SOx emissions were measured, conversion ratios of sulfur dioxide (SO2) to SO3 were calculated, and results were compared with existing literature, finding good agreement. The experiments with different extents of recycle gas cleaning and therefore different SO2 levels in the system, revealed differences in the SO3 generation behavior: A coal-specific trend of increasing conversion ratios of SO2 to SO3 with increased flue gas SO2 levels was observed that could be related to the ash composition of the three different coals. The capture of SOx in a baghouse filter was also evaluated. Acid dew point temperatures (ADPs) for the flue gas were calculated for the various firing conditions. Acid dew point (ADP) temperatures increased by up to 50°C when changing from air to oxy-firing with recycling of H2O and SO2. Considerable differences in the ADPs were found for different extents of oxy-fuel recycle gas treatment and were evaluated in respect to power plant efficiency implications. © 2014 American Chemical Society.
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2014 |
Shah K, Atkin R, Stanger R, Wall T, Moghtaderi B, 'Interactions between vitrinite and inertinite-rich coals and the ionic liquid - [bmim][Cl]', Fuel, 119 214-218 (2014) [C1] The interactions between vitrinite and inertinite-rich coals and the ionic liquid butylimidazolium chloride ([bmim][Cl]) heated to 100 C have been characterised. Differences in th... [more] The interactions between vitrinite and inertinite-rich coals and the ionic liquid butylimidazolium chloride ([bmim][Cl]) heated to 100 C have been characterised. Differences in the interactions of coal macerals and ionic liquids have been identified. [bmim][Cl] is able to dissolve 22 wt% of a high-vitrinite coal fraction compared to 14 wt% of a high-inertinite coal fraction. The vitrinite-rich coal fraction tends to swell to a greater extent compared to the inertinite-rich coal fraction, which was fractured and fragmented rather than swelled. © 2013 Published by Elsevier Ltd. All rights reserved.
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2014 |
Spoerl R, Belo L, Shah K, Stanger R, Giniyatullin R, Maier J, et al., 'Mercury Emissions and Removal by Ash in Coal-Fired Oxy-fuel Combustion', ENERGY & FUELS, 28 123-135 (2014) [C1]
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2014 |
Belo LP, Spörl R, Shah KV, Elliott LK, Stanger RJ, Maier J, Wall TF, 'Sulfur capture by fly ash in air and oxy-fuel pulverized fuel combustion', Energy and Fuels, 28 5472-5479 (2014) [C1] Ash produced during oxy-fuel combustion is expected to differ from ash produced during air combustion because of the higher CO2 and SO 2 atmospheres in which it is generated. For ... [more] Ash produced during oxy-fuel combustion is expected to differ from ash produced during air combustion because of the higher CO2 and SO 2 atmospheres in which it is generated. For a quantitative understanding of the sulfation behavior of fly ash in oxy-fuel combustion, fly ash from three commercial Australian sub-bituminous coals was tested and decomposed under an inert atmosphere. Thermal evolved gas analysis was completed for ash produced in both air and oxy-fuel environments. Pure salts were also tested under the same conditions to allow for identification of the species in the ash that capture sulfur, along with thermodynamic modeling using FactSage 6.3. Sulfur evolved during the decomposition of air and oxy-fuel fly ash was compared to the total sulfur in the ash to close the sulfur balance. Both total sulfur captured by the ash and sulfur evolved during decomposition were higher for oxy-fuel fly ash than their air counterparts. Correlations of capture with ash chemistry are presented. © 2014 American Chemical Society.
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2014 |
Belo LP, Elliott LK, Stanger RJ, Spörl R, Shah KV, Maier J, Wall TF, 'High-temperature conversion of SO The reaction of SO2 with fly ash in the presence of O2 and H2O involves a series of reactions that lead to the formation of SO3 and eventually H2SO4. Homogeneous experiments were ... [more] The reaction of SO2 with fly ash in the presence of O2 and H2O involves a series of reactions that lead to the formation of SO3 and eventually H2SO4. Homogeneous experiments were conducted to evaluate the effects of the procedural variables, i.e., temperature, gas concentrations, and residence time, on the post-combustion conversion of SO2 to SO3. The results were compared to existing global kinetics and found to be dependent upon SO2, O2, residence time, and temperature and independent of H2O content. For a residence time of 1 s, temperatures of about 900 °C are needed to have an observable conversion of SO2 to SO3. Literature suggested that the conversion of SO2 to SO3 is dependent upon the iron oxide content of the fly ash. Experiments using three different fly ash samples from Australian sub-bituminous coals were used to investigate the catalytic effects of fly ash on SO2 conversion to SO3 at a temperature range of 400-1000 °C. It was observed that fly ash acts as a catalyst in the formation of SO3, with the largest conversion occurring at 700 °C. A homogeneous reaction at 700 °C, without fly ash present, converted 0.10% of the available SO2 to SO3. When fly ash was present, the conversion increased to 1.78%. The catalytic effect accounts for roughly 95% of the total conversion. Average SO3/SO2 conversion values between fly ash derived from air and oxy-fuel firing and under different flue gas environments were found to be similar.
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2014 |
Ting T, Stanger R, Wall T, 'Oxyfuel CO Oxyfuel flue gas contains trace amounts of elemental mercury, which may corrode brazed aluminium heat exchangers used in the carbon dioxide purification system. International gas ... [more] Oxyfuel flue gas contains trace amounts of elemental mercury, which may corrode brazed aluminium heat exchangers used in the carbon dioxide purification system. International gas vendors have tested the use of the compression system to remove other flue gas impurities such as NOx; however, the reaction mechanism of mercury and its reaction products with NOx and nitric acid formed with condensed water vapour are unclear. This study used lab scale experiments to study the absorption of gaseous elemental mercury into nitric acid and the gas phase reaction between mercury and nitrogen dioxide formed from oxidised NO at pressures up to 25bar. It was observed that mercury has limited absorption into nitric acid and may partially desorb out of solution after depressurisation. On the other hand, mercury reacted readily with nitrogen dioxide (formed from nitric oxide oxidation at high pressure) in the gas phase. These gas phase reactions from the oxidation of nitric oxide to nitrogen dioxide to the subsequent oxidation of elemental mercury by nitrogen dioxide were predicted using existing global kinetic equations. The limited absorption of gaseous elemental mercury in nitric acid and significant oxidation of gaseous elemental mercury by nitrogen dioxide suggests that the primary removal step for elemental mercury is through the gas phase reaction. Oxyfuel compression circuits should therefore allow sufficient residence time for this gas phase reaction to occur. © 2014 Elsevier Ltd.
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2014 |
Stanger R, Xie W, Wall T, Lucas J, Mahoney M, 'Dynamic measurement of coal thermal properties and elemental composition of volatile matter during coal pyrolysis', Journal of Materials Research and Technology, 3 2-8 (2014) [C1]
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2014 |
Cassey J, Salter J, Colyvas K, Burstal R, Stanger R, 'The effect of convective heating on evaporative heat loss in anesthetized children', Paediatric Anaesthesia, 24 1274-1280 (2014) [C1] Background: Convective warming is effective in maintaining core temperature under anesthesia. It may increase evaporative water loss (EWL). If significant, further investigation o... [more] Background: Convective warming is effective in maintaining core temperature under anesthesia. It may increase evaporative water loss (EWL). If significant, further investigation of warming modifications to minimize this impact would be warranted. Objectives: To quantify EWL in two groups of children (warmed and nonwarmed) having surgical procedures under anesthesia. Methods: We performed an observational study of well children having general anesthesia for elective surgical procedures lasting =60 min. They were recruited sequentially to each of three age groups: 1-12 months, 13 months - 5 years, and 5-12 years - with each age group divided into convectively warmed (43°C) and nonwarmed (21°C) subgroups. Evaporative heat loss (EHL) was calculated from accurate measurement of net EWL during the surgical period. Results: Sixty children were studied. As a percentage of body mass, mean EWLs were 0.29 (warmed) and 0.09 (nonwarmed). Using an ANCOVA model, only procedure duration had a significant impact and explained why the extended procedural time in some convectively warmed children led to higher mean EWLs for that group. For the nonwarmed group, the mean Tcore drop was 1.27°C with a contribution from EWL of 0.6°C over ~70 min. Conclusions: Within the age range 1 month-12 years, EHL is not significantly influenced by convective heating under anesthesia. There is no thermal advantage in exploring technique modifications such as humidifying the warming air. Previous estimates of the contribution of EHL to total heat loss in anesthetized children may require revision.
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2014 |
Stanger R, Ting T, Wall T, 'High pressure conversion of NO x and Hg and their capture as aqueous condensates in a laboratory piston-compressor simulating oxy-fuel CO 2 compression', International Journal of Greenhouse Gas Control, 29 209-220 (2014) [C1]
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2013 |
Xie W, Stanger R, Lucas J, Wall T, Mahoney M, 'Coal macerals separation by reflux classification and thermo-swelling analysis based on the Computer Aided Thermal Analysis', FUEL, 103 1023-1031 (2013) [C1]
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2013 |
Wall T, Stanger R, Liu Y, 'Gas cleaning challenges for coal-fired oxy-fuel technology with carbon capture and storage', FUEL, 108 85-90 (2013) [C1]
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2013 |
Stanger R, Wall T, Lucas J, Mahoney M, 'Dynamic Elemental Thermal Analysis (DETA) - A characterisation technique for the production of biochar and bio-oil from biomass resources', FUEL, 108 656-667 (2013) [C1]
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2013 |
Stanger R, Xie W, Wall T, Lucas J, Mahoney M, 'Dynamic Elemental Thermal Analysis: A technique for continuous measurement of carbon, hydrogen, oxygen chemistry of tar species evolved during coal pyrolysis', Fuel, 103 764-772 (2013) [C1] A novel technique is described which provides quantitative and continuous analysis of light gas and condensable tar components as they are evolved in terms of carbon, hydrogen and... [more] A novel technique is described which provides quantitative and continuous analysis of light gas and condensable tar components as they are evolved in terms of carbon, hydrogen and oxygen. The technique has also been used to directly characterise the total tar sample in terms of carbon distribution and boiling point. It has been found that changes to the dynamic tar-H/C ratio correspond well with particular temperatures measured by Geiseler Plastometer for softening, maximum fluidity and re-solidification. This technique can enhance the chemical understanding of mechanisms occurring during de-polymerisation and cross-linking of coal (i.e. metaplast development and the transfer of hydrogen) while also monitoring tar evolution. A tar collection and re-vaporisation method provides a means of identifying tar groups that contribute towards the metaplast phase and temperatures at which they evolve. Both methods are unique in studying chemical aspects of coal and tar behaviour with heating, in a field based on thermo-physical techniques (e.g. H1 NMR, high temperature rheology, Geiseler plastometry, dilatation). Overall, the Dynamic Elemental Thermal Analysis (DETA) technique can give new insight into the fundamental mechanisms prevalent in coal pyrolysis and provides quantitative chemical assessment of tar nature (i) during the heating of coal and (ii) as a final (total) condensed product. © 2012 Elsevier Ltd. All rights reserved.
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2013 |
Cassey J, Armstrong P, Colyvas K, Stanger R, 'Comment on 'Prevention of intraoperative hypothermia...' Witt L, Denhardt N, Eich C et al.', PEDIATRIC ANESTHESIA, 23 970-970 (2013) [C3]
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2013 |
Stanger R, Xie W, Wall T, Lucas J, Mahoney M, 'Dynamic behaviour of coal macerals during pyrolysis-Associations between physical, thermal and chemical changes', Proceedings of the Combustion Institute, 34 2393-2400 (2013) [C1] A fundamental study on the behaviour of heating coal macerals has been undertaken using two novel thermal analysis techniques. The apparent specific heat was determined during hea... [more] A fundamental study on the behaviour of heating coal macerals has been undertaken using two novel thermal analysis techniques. The apparent specific heat was determined during heating using an inverse calorimetric method (computer aided thermal analysis, CATA) and combined with pressure and displacement measurements to correlate endothermic and exothermic behaviour with measurement of swelling. The second technique used a post-oxidation stage to combust the tars and gases into products which were analysed. This method was used to study the elemental character of volatiles release from coal maceral concentrates in terms of carbon and hydrogen. Extents of swelling and exothermicity during primary devolatilisation were found to be correlated with vitrinite content and were associated with tar evolution. For the highest vitrinite fraction (of 86.4% vitrinite) swelling was initiated at the same temperature range for exothermic reactions, and maximum swelling coincided with the peak release of light gases. Tar evolution was found to change in chemical character (as defined by H/C ratio) during progressive heating, initially rising in the early stages of tar formation (<430°C) to a maximum of 1.24, then gradually decreasing to a minimum of 0.64 at 550°C. © 2012 The Combustion Institute. Published by Elsevier Inc. All rights reserved.
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2013 |
Ting T, Stanger R, Wall T, 'Laboratory investigation of high pressure NO oxidation to NO Oxyfuel combustion enables carbon dioxide capture for storage and can therefore significantly reduce carbon dioxide emissions from coal fired power plants. However, CO2 derived fr... [more] Oxyfuel combustion enables carbon dioxide capture for storage and can therefore significantly reduce carbon dioxide emissions from coal fired power plants. However, CO2 derived from oxyfuel combustion has impurities that cause corrosion to plant equipment and transport lines and may be subjected to certain storage and end user requirements. The use of the CO2 compression system in an oxyfuel power plant to remove these impurities has been proposed and tested by international gas vendors both at laboratory and power-plant scale; however the extent of quantitative removal of these impurities by the compression system is unknown. The current research uses laboratory experiments to study the reactions of nitrogen oxides in the compression system. These include the oxidation of NO to NO2 in the gas phase, the absorption in liquid water and also reactions with water vapour in conditions from ambient conditions to pressures of 30bar. The reactor used was a bubble column that was preloaded with liquid water. Results show that nitric oxide is readily oxidised to water-soluble nitrogen dioxide at elevated pressures. This reaction is kinetically controlled and can be predicted using an equation derived for atmospheric pressure conditions. The resulting nitrogen dioxide is shown to react with liquid water to form nitrous and nitric acid. Single experiments also showed the potential for gas phase acid formation and condensation. Overall mass balances across the gas-liquid system were complicated by the stability of the absorbed NOx species in the liquid. © 2013 Elsevier Ltd.
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2013 |
Liu D, Liu Y, Wall T, Stanger R, 'CO Oxy-fuel combustion is an emerging technology to mitigate CO2 emissions from power plants. Compared with other CO2 capture technologies, gas impurities in oxy-fuel flue gas are hi... [more] Oxy-fuel combustion is an emerging technology to mitigate CO2 emissions from power plants. Compared with other CO2 capture technologies, gas impurities in oxy-fuel flue gas are highly concentrated, among which SO2 is of concern. Sodium based quench units have been used in oxyfuel projects to directly cool the gas prior to compression and to also remove SO2. However, the high concentration of CO2 in the flue gas can interfere with the capture of SO2. Dynamic transient experiments were therefore conducted in a semi-batch well stirred reactor (WSR) to study the mechanisms of SO2 absorption from gas mixtures of both SO2/N2 and SO2/CO2 into sodium based aqueous solutions, with measurements of SO2 absorption rate and decreasing liquid pH during the experiments. The liquids were analysed by ion chromatography (IC) and acid titration with equilibrium calculations to estimate sulfur and carbon species formed in the liquid.The dynamic absorption results for SO2/CO2 show three pH regions of absorption behaviour as pH reduced during the experiments, namely, region 1 with a constant gas absorption rate at pH values above 8.32 (this being 9.65 for the SO2/N2 experiments); region 2 where the gas absorption rate reduced at pH values from 8.32 to 4.22 (from 9.65 to 4.82 for SO2/N2); and region 3 where gas absorption reduced rapidly with pH, at pH values below 4.22 (4.82 for SO2/N2). From liquid analyses and thermodynamic calculations it is concluded that region 1 is associated with the consumption of OH- to give SO32-, region 2 with the consumption of HCO3-/SO32- and the formation of HSO3-, and region 3 with the consumption of H2O and the accumulation of HSO3- and SO2.The operational pH of the sodium based quench units is recommended to be in region 2, where a high absorption rate of SO2 and low sodium loss are expected. An operational pH window is thereby defined in terms of upper and lower limits. The operational pH window is found to be related to the concentration of sodium solutions when an inlet concentration of SO2 is proximately 3000ppm, and the window narrows at high concentrations of sodium solutions. The operational window is secondarily related with the concentrations of SO2 and narrows at low concentrations of SO2. © 2013 Elsevier Ltd.
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2011 |
Wall TF, Stanger RJ, Santos S, 'Demonstrations of coal-fired oxy-fuel technology for carbon capture and storage and issues with commercial deployment', International Journal of Greenhouse Gas Control, 5 S5-S15 (2011) [C1]
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2011 |
Stanger RJ, Wall TF, 'Sulphur impacts during pulverised coal combustion in oxy-fuel technology for carbon capture and storage', Progress in Energy and Combustion Science, 37 69-88 (2011) [C1]
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2009 |
Stanger RJ, Colyvas KJ, Cassey JG, Robinson IA, Armstrong P, 'Predicting the efficacy of convection warming in anaesthetized children', British Journal of Anaesthesia, 103 275-282 (2009) [C1]
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Show 55 more journal articles |
Conference (11 outputs)
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2017 |
Xie W, Stanger R, Tran Q, Mahoney M, Wall T, Lucas J, 'Large size inertinite particles separation and their effect on coking behaviour of other coking coals', Beijing (2017)
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2017 |
Xie WEI, Stanger R, Tran Q, Smith N, Wall T, Lucas J, Xie W, 'Impact of coal pyrolysis products as rheological additive on thermoplasticity of a coking coal', Perth, Australia (2017)
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2015 |
Xie W, Stanger R, Wall T, Lucas J, Mahoney M, 'Effect of coal rank and maceral composition on thermo-swelling behaviour during coking', Melbourne (2015)
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2014 |
Spörl R, Maier J, Belo L, Shah K, Stanger R, Wall T, Scheffknecht G, 'Mercury and SO This paper presents results on experiments carried out at a 20 kW combustion rig simulating different extents of oxy-fuel recycle gas cleaning by impurities injection to the oxida... [more] This paper presents results on experiments carried out at a 20 kW combustion rig simulating different extents of oxy-fuel recycle gas cleaning by impurities injection to the oxidant gas of the once-through combustion reactor. A comprehensive set of total (Hgtot), elemental (Hg0) and oxidized (Hg2+) mercury as well as SO3 concentrations was obtained before and after the combustion rig's baghouse filter for in total 14 air and oxy-fuel experiments with 3 Australian coals. Based on this data, an assessment in respect to Hg oxidation, SO2/SO3 conversion and Hg and SO3 capture on the test rig's filter was performed. The air and the oxyfuel experiments with different extents of recycle gas cleaning, revealed differences in the Hg and SO3 formation and capture behavior: The Hg2+/Hgtot ratios in the flue gas are higher during oxy-fuel combustion compared to air-firing. This effect is even more pronounced at the filter outlet, after flue gas has passed through the filter ash. In some experiments, even a net oxidation of Hg0 entering the filter to Hg2+ was observed. The Hg capture by ash in the baghouse filter has been found to reduce the Hg emissions considerably. However, the Hg capture was altered by the different oxy-fuel recycle configurations, leading to decreased Hg capture efficiencies on the filter for one of the coals. A coal-specific trend of increased SO2/SO3 conversion ratios with increased flue gas SO2 levels was observed that could be related to the ash composition of the three different coals. This and the higher SO2 concentrations in the flue gas lead to considerably higher SO3 levels in oxy-fuel combustion with SO2 recycling. During the experiments, also a considerable capture of SO3 in the baghouse filter was observed (up to 80% under air- And up to 66% under oxy-fired conditions). A reduction of the SO3 capture on the filter under oxy-fuel conditions may be related to the higher SO3 levels in this process.
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Nova | |||||||||
2013 |
Mahoney MR, Xie W, Stanger R, Wall T, Lucas J, 'Physical, chemical and thermal behaviours during cokemaking using CATA and DETA techniques', 10th Australian Coal Science Conference Proceedings, Brisbane (2013) [E2]
|
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2013 |
Ting T, Stanger RJ, Wall T, 'Removal of NOx from Oxyfuel Derived CO2 by Reaction with Water Condensate Formed During Compression', Proceedings of The Australian Combustion Symposium 2013, Perth, W.A. (2013) [E1]
|
Nova | |||||||||
2013 |
Xie W, Stanger RJ, Wall TF, Lucas JA, Mahoney MR, 'Physical, Chemical and Thermal Changes in the Transformation of Coal to Coke', Proceedings of the Australian Combustion Symposium, Perth, W.A. (2013) [E1]
|
Nova | |||||||||
2012 | Liu Y, Zhou H, Liu YH, Stanger R, Elliot L, Wall T, Cen KF, 'The Study of Calcium Sulfate Decomposition by Experiments Under O-2/CO2 Atmosphere', CLEANER COMBUSTION AND SUSTAINABLE WORLD, Harbin Inst Technol, Combust Engn Res Inst, Harbin, PEOPLES R CHINA (2012) | ||||||||||
2012 |
Stanger RJ, Xie W, Wall TF, Lucas JA, Mahoney MR, 'Dynamic measurement of coal thermal properties and elemental composition of volatile matter during coal pyrolysis', Proceedings of the 6th International Congress on the Science and Technology of Ironmaking, Rio de Janeiro (2012) [E2]
|
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2011 |
Xie W, Stanger RJ, Lucas JA, Wall TF, Mahoney MR, 'Influence of heating rate and particle size on thermo-swelling properties of heating coal', Proceedings of the Australian Combustion Symposium 2011, Shoal Bay (2011) [E1]
|
Nova | |||||||||
2009 |
Wall TF, Stanger RJ, Maier J, 'Sulfur and coal-fired oxyfuel combustion with CCS: Impacts and control options', 1st Oxyfuel Combustion Conference: Book of Abstracts, Cottbus, Germany (2009) [E2]
|
Nova | |||||||||
Show 8 more conferences |
Presentation (1 outputs)
Year | Citation | Altmetrics | Link | ||
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2021 |
Robinson P, Guo J, Williams K, Abdul Rahman MA, Orozovic O, 'Heat Transfer in Granular Materials', (2021)
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Report (9 outputs)
Year | Citation | Altmetrics | Link | ||
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2022 |
Elliott L, Stanger A, Stanger R, 'Fine Particles from Coal Combustion', ACARP, 106 (2022)
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2019 |
Xie W, Stanger R, Wall T, Mahoney M, Lucas J, Warren K, O'Brien G, 'Relevance of Maceral Concentrates to Whole Coal Coking Predictions', ACARP, 61 (2019)
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2019 |
Steel K, Aziz H, Esterle J, Rodrigues S, Xie W, Stanger R, et al., 'Physical and Chemical Interactions Occurring During Cokemaking and Their Influence on Coke Strength-stage 2', ACARP (2019)
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2014 |
Mahoney MR, Stanger R, Xie W, Lucas J, Wall T, 'Fundamental reasons for different coking behaviour of coals from different basins - behaviour of semi-inerts', Australian Coal Association Research Program (ACARP), 77 (2014) [R1]
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Show 6 more reports |
Grants and Funding
Summary
Number of grants | 37 |
---|---|
Total funding | $5,851,853 |
Click on a grant title below to expand the full details for that specific grant.
20242 grants / $324,610
Side-by-side analysis of coal by automated micro-CT and commercial laboratory testing$167,432
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Rohan Stanger |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Lead |
Funding Start | 2024 |
Funding Finish | 2024 |
GNo | G2300649 |
Type Of Funding | C1700 - Aust Competitive - Other |
Category | 1700 |
UON | Y |
Stage 2 Alternative thermal processing of coal- Pilot Extruded Coke and Supercapacitor Demonstration$157,178
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Rohan Stanger |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Lead |
Funding Start | 2024 |
Funding Finish | 2024 |
GNo | G2300651 |
Type Of Funding | C1700 - Aust Competitive - Other |
Category | 1700 |
UON | Y |
20231 grants / $81,730
3D particle surface composition analysis for flotation using microCT$81,730
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Rohan Stanger, Bruce Atkinson, Emeritus Professor Graeme Jameson |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Lead |
Funding Start | 2023 |
Funding Finish | 2024 |
GNo | G2300969 |
Type Of Funding | C1700 - Aust Competitive - Other |
Category | 1700 |
UON | Y |
20223 grants / $340,210
Effect of Coal Quality on Carbon Products Produced with Alternative Thermal Processing - Extrusion and Direct Casting Technologies$159,425
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Rohan Stanger, Emeritus Professor Terry Wall |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Lead |
Funding Start | 2022 |
Funding Finish | 2023 |
GNo | G2101464 |
Type Of Funding | C1700 - Aust Competitive - Other |
Category | 1700 |
UON | Y |
Improving 3D Analysis of Coal Particles for Density and Mineral Grain Composition Beyond Float Sink Analysis$155,785
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Rohan Stanger, Doctor Liza Elliott, Emeritus Professor Terry Wall, Doctor Wei Xie |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Lead |
Funding Start | 2022 |
Funding Finish | 2022 |
GNo | G2101465 |
Type Of Funding | C1700 - Aust Competitive - Other |
Category | 1700 |
UON | Y |
Analysis of solid products from sugarcane Cat-HTRTM processing $25,000
Funding body: Licella Holdings Limited
Funding body | Licella Holdings Limited |
---|---|
Project Team | Doctor Rohan Stanger |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2022 |
Funding Finish | 2022 |
GNo | G2200314 |
Type Of Funding | C3100 – Aust For Profit |
Category | 3100 |
UON | Y |
20215 grants / $511,855
Fine Particles from Coal$188,700
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Liza Elliott, Doctor Rohan Stanger |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Investigator |
Funding Start | 2021 |
Funding Finish | 2022 |
GNo | G2000231 |
Type Of Funding | C1700 - Aust Competitive - Other |
Category | 1700 |
UON | Y |
Optical Profiling of Coal and Mineral Particles in the Ultrafine Circuit for Online Analysis$157,387
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Rohan Stanger, Emeritus Professor Terry Wall, Doctor Quang Anh Tran, Dr Peter Stepien |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Lead |
Funding Start | 2021 |
Funding Finish | 2021 |
GNo | G2100245 |
Type Of Funding | C1700 - Aust Competitive - Other |
Category | 1700 |
UON | Y |
Washability and distribution of sulphur and trace elements for different size and density fractions of product coals$128,550
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Wei Xie, Emeritus Professor Terry Wall, Doctor Rohan Stanger, Associate Professor John Lucas, Professor Joan Esterle |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Investigator |
Funding Start | 2021 |
Funding Finish | 2021 |
GNo | G2100246 |
Type Of Funding | C1700 - Aust Competitive - Other |
Category | 1700 |
UON | Y |
High value carbons from brown coal hydro-liquefaction products$31,818
Funding body: Sustineri Pty Ltd
Funding body | Sustineri Pty Ltd |
---|---|
Project Team | Doctor Rohan Stanger |
Scheme | Research Grants |
Role | Lead |
Funding Start | 2021 |
Funding Finish | 2021 |
GNo | G2101053 |
Type Of Funding | C3100 – Aust For Profit |
Category | 3100 |
UON | Y |
Identifying the Softening Point of Plastic Components in Electric Vehicle Charger$5,400
Funding body: Ampcontrol SWG Pty LTD
Funding body | Ampcontrol SWG Pty LTD |
---|---|
Project Team | Doctor Quang Anh Tran, Doctor Liza Elliott, Doctor Rohan Stanger |
Scheme | Research Grants |
Role | Investigator |
Funding Start | 2021 |
Funding Finish | 2021 |
GNo | G2101080 |
Type Of Funding | C3100 – Aust For Profit |
Category | 3100 |
UON | Y |
20203 grants / $1,392,800
Conversion of Licella CAT-HTR bio-crude oil to aromatics$1,143,500
Funding body: Licella Holdings Limited
Funding body | Licella Holdings Limited |
---|---|
Project Team | Professor Michael Stockenhuber, Professor Eric Kennedy, Professor Eric Kennedy, Doctor Rohan Stanger, Doctor Rohan Stanger, Professor Michael Stockenhuber |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2020 |
Funding Finish | 2023 |
GNo | G2000791 |
Type Of Funding | C3100 – Aust For Profit |
Category | 3100 |
UON | Y |
Understanding of the mechanism of chemical interaction between vitrinite and inertinite$149,500
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Wei Xie, Emeritus Professor Terry Wall, Doctor Rohan Stanger, Associate Professor John Lucas, Professor Jianglong Yu |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Investigator |
Funding Start | 2020 |
Funding Finish | 2020 |
GNo | G2000061 |
Type Of Funding | C1700 - Aust Competitive - Other |
Category | 1700 |
UON | Y |
Oxidation rate in reducing coking propensity of individual maceral grains residing naturally in lump coal using FTIR microscopy$99,800
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Quang Anh Tran, Doctor Rohan Stanger, Professor Michael Stockenhuber, Emeritus Professor Terry Wall |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Investigator |
Funding Start | 2020 |
Funding Finish | 2021 |
GNo | G2000169 |
Type Of Funding | C1700 - Aust Competitive - Other |
Category | 1700 |
UON | Y |
20194 grants / $531,633
Stage 2 - Low cost online measurement of particle size and density for diagnostics across the fine coal circuit$224,430
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Rohan Stanger, Emeritus Professor Terry Wall, Dr Peter Stepien, Dr Dave Osbourne |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Lead |
Funding Start | 2019 |
Funding Finish | 2019 |
GNo | G1801449 |
Type Of Funding | C1700 - Aust Competitive - Other |
Category | 1700 |
UON | Y |
Mineral redistribution from PF coal to ash in commercial power stations$153,270
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Rohan Stanger, Doctor Liza Elliott, Doctor Liza Elliott, Emeritus Professor Terry Wall, Emeritus Professor Terry Wall, Conjoint Professor Rajender Gupta |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Lead |
Funding Start | 2019 |
Funding Finish | 2019 |
GNo | G1801438 |
Type Of Funding | C1700 - Aust Competitive - Other |
Category | 1700 |
UON | Y |
How Inertinite Concentrates in Blends Affect Coke Strength$99,500
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Wei Xie, Emeritus Professor Terry Wall, Emeritus Professor Terry Wall, Associate Professor Merrick Mahoney, Doctor Rohan Stanger, Associate Professor John Lucas |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Investigator |
Funding Start | 2019 |
Funding Finish | 2019 |
GNo | G1900393 |
Type Of Funding | C1700 - Aust Competitive - Other |
Category | 1700 |
UON | Y |
Feasibility study into the generation of carbon foams for New Zealand coal$54,433
Funding body: New Zealand Institute for Minerals to Material Research
Funding body | New Zealand Institute for Minerals to Material Research |
---|---|
Project Team | Doctor Rohan Stanger, Emeritus Professor Terry Wall, Emeritus Professor Terry Wall, Associate Professor John Lucas, Associate Professor John Lucas |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2019 |
Funding Finish | 2019 |
GNo | G1900297 |
Type Of Funding | C3700 – International Govt – Own Purpose |
Category | 3700 |
UON | Y |
20183 grants / $1,112,451
Low emission coal in the manufacture of carbon fibres$717,534
Funding body: NSW Department of Planning, Industry and Environment
Funding body | NSW Department of Planning, Industry and Environment |
---|---|
Project Team | Emeritus Professor Terry Wall, Doctor Rohan Stanger, Emeritus Professor Graeme Jameson, Associate Professor John Lucas, Naebe, Minoo |
Scheme | Coal Innovation NSW Fund |
Role | Investigator |
Funding Start | 2018 |
Funding Finish | 2022 |
GNo | G1800572 |
Type Of Funding | C2300 – Aust StateTerritoryLocal – Own Purpose |
Category | 2300 |
UON | Y |
Technological Assessment of a Recycle Reactor for VAM Abatement$264,672
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Professor Michael Stockenhuber, Professor Eric Kennedy, Doctor Tim Oliver, Associate Professor John Lucas, Doctor Rohan Stanger |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Investigator |
Funding Start | 2018 |
Funding Finish | 2018 |
GNo | G1800312 |
Type Of Funding | C1700 - Aust Competitive - Other |
Category | 1700 |
UON | Y |
Investigation into soil remediation$130,245
Funding body: Ventia Utility Services Pty Ltd
Funding body | Ventia Utility Services Pty Ltd |
---|---|
Project Team | Doctor Rohan Stanger, Associate Professor John Lucas, Emeritus Professor Terry Wall |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2018 |
Funding Finish | 2018 |
GNo | G1701635 |
Type Of Funding | C3100 – Aust For Profit |
Category | 3100 |
UON | Y |
20176 grants / $387,583
Low Cost Online Measurement of Particle Size and Density of Diagnostics Across the Fine Coal Circuit$119,633
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Rohan Stanger, Emeritus Professor Terry Wall, Dr Peter Stepien, Dr Dave Osborne |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Lead |
Funding Start | 2017 |
Funding Finish | 2017 |
GNo | G1700170 |
Type Of Funding | Aust Competitive - Non Commonwealth |
Category | 1NS |
UON | Y |
Review of ACARP research to support marketing of Australian thermal coal$102,200
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Emeritus Professor Terry Wall, Doctor Rohan Stanger, Professor Jianglong Yu, Doctor Liza Elliott |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Investigator |
Funding Start | 2017 |
Funding Finish | 2018 |
GNo | G1701430 |
Type Of Funding | Aust Competitive - Non Commonwealth |
Category | 1NS |
UON | Y |
Relevance of maceral concentrates to whole coal coking predicts$69,500
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Wei Xie, Doctor Rohan Stanger, Associate Professor Merrick Mahoney, Emeritus Professor Terry Wall, Associate Professor John Lucas, Professor Jianglong Yu |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Investigator |
Funding Start | 2017 |
Funding Finish | 2017 |
GNo | G1700654 |
Type Of Funding | C1700 - Aust Competitive - Other |
Category | 1700 |
UON | Y |
Physical and chemical interactions occurring between macerals during cokemaking and their influence on coke strength$54,750
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Wei Xie, Associate Professor Merrick Mahoney, Doctor Rohan Stanger, Associate Professor John Lucas, Emeritus Professor Terry Wall, Professor Jianglong Yu, Dr Karen Steel, Professor Joan Esterle |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Investigator |
Funding Start | 2017 |
Funding Finish | 2017 |
GNo | G1700655 |
Type Of Funding | Aust Competitive - Non Commonwealth |
Category | 1NS |
UON | Y |
Carbon fibre production from coal for market grade quantities$29,000
Funding body: FEBE, UoN
Funding body | FEBE, UoN |
---|---|
Project Team | Rohan Stanger, Terry Wall, John Lucas |
Scheme | Strategic pilot Grant |
Role | Lead |
Funding Start | 2017 |
Funding Finish | 2017 |
GNo | |
Type Of Funding | Internal |
Category | INTE |
UON | N |
Rare earth elements in coal ash$12,500
Funding body: Delta Electricity
Funding body | Delta Electricity |
---|---|
Project Team | Doctor Liza Elliott, Doctor Rohan Stanger |
Scheme | Research Grant |
Role | Investigator |
Funding Start | 2017 |
Funding Finish | 2017 |
GNo | G1701104 |
Type Of Funding | C3100 – Aust For Profit |
Category | 3100 |
UON | Y |
20165 grants / $778,206
Scope study of technological options for SOx treatment for CTSCo project $377,949
Funding body: Australian National Low Emissions Coal Research & Development
Funding body | Australian National Low Emissions Coal Research & Development |
---|---|
Project Team | Professor Jianglong Yu, Emeritus Professor Terry Wall, Doctor Rohan Stanger, Associate Professor John Lucas, Laureate Professor Behdad Moghtaderi, Dr Hai Yu, Dr Lianbo Liu, Dr Hongwei Niu |
Scheme | Research Project |
Role | Investigator |
Funding Start | 2016 |
Funding Finish | 2017 |
GNo | G1600812 |
Type Of Funding | C3100 – Aust For Profit |
Category | 3100 |
UON | Y |
Optimising the performance of solid bowl centrifuge for tailing dewatering$125,560
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Rohan Stanger, Associate Professor John Lucas, Emeritus Professor Terry Wall, Professor Jianglong Yu, Doctor Wei Xie |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Lead |
Funding Start | 2016 |
Funding Finish | 2016 |
GNo | G1600043 |
Type Of Funding | Aust Competitive - Non Commonwealth |
Category | 1NS |
UON | Y |
Using high range mass spectrometry to study the link between coal structure, coke strength and thermoplastic chemistry in blends$104,240
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Rohan Stanger, Emeritus Professor Terry Wall, Associate Professor John Lucas, Professor Jianglong Yu, Doctor Wei Xie, Associate Professor Merrick Mahoney |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Lead |
Funding Start | 2016 |
Funding Finish | 2017 |
GNo | G1600044 |
Type Of Funding | Aust Competitive - Non Commonwealth |
Category | 1NS |
UON | Y |
Concentrating coke oven sized inertinite particles to study their behaviour in targeted coking blends$91,690
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Wei Xie, Doctor Rohan Stanger, Associate Professor Merrick Mahoney, Emeritus Professor Terry Wall, Associate Professor John Lucas, Professor Jianglong Yu |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Investigator |
Funding Start | 2016 |
Funding Finish | 2017 |
GNo | G1600048 |
Type Of Funding | Aust Competitive - Non Commonwealth |
Category | 1NS |
UON | Y |
Scoping study on Matmor feed material using novel thermal analysis$78,767
Funding body: Environmental Clean Technologies Limited
Funding body | Environmental Clean Technologies Limited |
---|---|
Project Team | Doctor Rohan Stanger, Emeritus Professor Terry Wall, Associate Professor John Lucas, Doctor Wei Xie, Professor Eric Kennedy, Professor Michael Stockenhuber |
Scheme | Research Grant |
Role | Lead |
Funding Start | 2016 |
Funding Finish | 2019 |
GNo | G1600680 |
Type Of Funding | C3100 – Aust For Profit |
Category | 3100 |
UON | Y |
20151 grants / $213,530
An in-situ study of the plastic layer formation in coking coals using a lab-scale test furnace$213,530
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Professor Jianglong Yu, Associate Professor Merrick Mahoney, Doctor Rohan Stanger, Associate Professor John Lucas, Emeritus Professor Terry Wall |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Investigator |
Funding Start | 2015 |
Funding Finish | 2018 |
GNo | G1400697 |
Type Of Funding | Aust Competitive - Non Commonwealth |
Category | 1NS |
UON | Y |
20141 grants / $19,958
Hydrothermal treatment of biomass to optimise biofuel production $19,958
Funding body: University of Newcastle - Faculty of Engineering & Built Environment
Funding body | University of Newcastle - Faculty of Engineering & Built Environment |
---|---|
Project Team | Doctor Rohan Stanger |
Scheme | Pilot Grant |
Role | Lead |
Funding Start | 2014 |
Funding Finish | 2014 |
GNo | G1400977 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20131 grants / $149,187
Fundamental reasons for different coking behaviour of coals from different basins – behaviour of semi-inerts $149,187
Funding body: Australian Coal Research Limited
Funding body | Australian Coal Research Limited |
---|---|
Project Team | Doctor Rohan Stanger, Emeritus Professor Terry Wall, Associate Professor John Lucas, Associate Professor Merrick Mahoney |
Scheme | Australian Coal Association Research Program (ACARP) |
Role | Lead |
Funding Start | 2013 |
Funding Finish | 2014 |
GNo | G1201237 |
Type Of Funding | Aust Competitive - Non Commonwealth |
Category | 1NS |
UON | Y |
20121 grants / $1,200
34th International Symposium on Combustion, Warsaw University Institute of Technology, Poland, 29 July - 3 August 2012$1,200
Funding body: University of Newcastle - Faculty of Engineering & Built Environment
Funding body | University of Newcastle - Faculty of Engineering & Built Environment |
---|---|
Project Team | Doctor Rohan Stanger |
Scheme | Travel Grant |
Role | Lead |
Funding Start | 2012 |
Funding Finish | 2013 |
GNo | G1200856 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
20091 grants / $6,900
Thermal Analysis of Coal with Continuous Volumetric Measurement$6,900
Funding body: University of Newcastle
Funding body | University of Newcastle |
---|---|
Project Team | Doctor Rohan Stanger |
Scheme | Early Career Researcher Grant |
Role | Lead |
Funding Start | 2009 |
Funding Finish | 2009 |
GNo | G0190534 |
Type Of Funding | Internal |
Category | INTE |
UON | Y |
Research Supervision
Number of supervisions
Past Supervision
Year | Level of Study | Research Title | Program | Supervisor Type |
---|---|---|---|---|
2024 | PhD | A Characterisation of Rare Earth Elements in By-products of Coal Preparation and Utilisation | PhD (Geology), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
2019 | PhD | A Mechanistic Study of the Formation of Plastic Layers during the Heating of Coking Coal | PhD (Chemical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Co-Supervisor |
2018 | PhD | Mechanisms of Metaplast Formation during Coal Pyrolysis | PhD (Chemical Engineering), College of Engineering, Science and Environment, The University of Newcastle | Principal Supervisor |
Research Projects
Coal Innovation NSW Low emission coal in the manufacture of carbon fibre 2019 - 2021
Directly reduced iron using brown coal 2019 - 2020
Mineral separation techniques for soil remediation 2018 - 2020
Manufacturing carbon foams with New Zealand coals 2019 - 2020
ACARP Low Cost Online Measurement of Particle Size and Density for Diagnostics Across the Fine Coal Circuit- Stage 1 2017 - 2019
ACARP Low Cost Online Measurement of Particle Size and Density for Diagnostics Across the Fine Coal Circuit - Stage 2 2019 - 2020
ARC Understanding the fundamental mechanisms of metaplast development in coal and biomass during pyrolysis 2014 - 2016
This project will investigate the principle mechanisms involved in the most poorly understood area of coal researchmetaplast formation. Not all coals undergo a meta-stable plastic transition (ie soften and deform) during pyrolysis, but those that do are highly prized for their thermal properties and Australia has some of the worlds most abundant supplies. This project will track the chemical and physical changes occurring during metaplast development for a range of coal measures and their macerals constituents with a focus on the dynamic interplay between primary decomposition products and final volatile species. These results will be directly compared with several biomass varieties and their polymer constituents (eg. cellulose, lignin). This analysis capability has only recently been developed as part of a current ARC grant (DP1097016) and this proposal builds on the research momentum already achieved.
ARC Thermal characterisation of coal macerals 2010 - 2012
The aim of this research was to investigate exo & endothermic reactions in density separated coal of different rank. A novel thermal analysis technique was used to characterise pyrolytic behaviour in coal macerals. This proposal studied fluidity effects on hydrogen transfer and tar formation and identify convective influences during devolatilisation. The results generated fundamental thermal and kinetic data to understand and model coal pyrolysis behaviour in a new and highly sensitive way. This advanced modelling capacity is directly applicable to combustion and gasification processes and enhances design for existing and future technologies.
ANLEC R&D Gas quality impacts, assessment and control in oxyfuel technology for CCS -Part 1 2013 - 2014
The cost of gas cleaning is likely to be more significant for oxyfuel than for other CC technologies. The CO2 gas quality from oxyfuel technology for CCS differs greatly from pre- and post-combustion technologies in quality and quantity, having higher levels of inert gases (N2 and Ar) , oxygen (O2) – with several impurities, sulphur and nitrogen gases (SO2, SO3, NO, NO2), mercury gases (Hgo and Hg++). Options are available for adjusting gas quality, in the furnace, and by cleaning and treating flue gas with potentially further removal of impurities during compression by technology which is yet to be proven at scale. Thus, knowledge of the impact of gas quality on the capital and operating costs of power plant, CO2 compression, on transport systems and also gas quality regulations for storage is required. The technology significance of the research is due to: Uncertainty of the oxyfuel technology flowsheet, in the need and optimum locations for gas cleaning unit operations; The higher concentrations of gas impurities in the furnace and flue gas compared to air firing (by about a factor of 3) due to removal of N2 in the oxidant; Uncertain future regulatory requirements of CO2 gas quality for transport and storage; The significance of impurities on CO2 recovery (% capture) and energy for compression; Uncertainty regarding the optimum location and units for removal of S, N and Hg gases The project has both general objectives relevant to the technology and specific objectives identified by the Callide Oxyfuel Project to be of significance, using the same rigs for laboratory experiments and experiments on slip streams at the COP. The five objectives are to: 1. Establish the extent to gas scrubbing prior to CO2 compression removes gas impurities 2. Establish the feasibility of gas quality control by removal of impurities in compression 3, Establish the removal of mercury species in CO2 processing 4, Provide options for monitoring of sulphur-derived corrosion at the COP 5. Provide flow sheets for gas cleaning options to be used in the ANLECR&D TEA program The outcomes will be reductions in the uncertainties given above, with options from objective 5 to allow the quantification of the reduction of plant and operating costs.
ANLEC R&D Gas quality impacts, assessment and control in oxyfuel technology for CCS - Part 2 2014
The ANLECR&D Project 6-0710-0061 on “Gas quality impacts, assessment and control in oxy-fuel technology for CCS”, which concludes in April 2013 has established the feasibility of cleaning of mercury gases from oxyfuel flue gas in a fabric filter and during CO2 compression. The proposed project quantifies the extent of removal and the impact of other gas impurities in the CO2, using existing apparatus and analysis techniques, with new techniques to clarify uncertainties in reaction mechanisms determining removal. The project uses laboratory experiments on laboratory “synthetic’ oxyfuel gas and culminates with two trials at the COP to test the impact of ‘real’ gas with analyses on sampled (slip stream) gases and liquids from an apparatus developed for compression of oxyfuel flue gas.
The project is needed due to the cost and risk associated with CO2 gas quality in the Callide Oxyfuel Project (COP) and to future oxyfuel technology deployment in Australia and elsewhere. The removal of mercury species prior to CO2 liquefaction is critical in avoiding the cost and risk of corrosion in brazed aluminium cryogenic heat exchangers of the CPU.
The aim is that by two testing periods on “real” oxyfuel flue gas at the COP in 2014 to suit the COP schedule. Together with related controlled laboratory measurements on “synthetic” gas the project will:
- Quantify and provide understanding of the impact (reduction) of Hg capture due to SO2/SO3 with associated high acid dew point temperature by ash in the fabric filter in oxyfuel combustion
- Quantify and provide understanding of Hg removal in (liquid) acid condensates formed by NOx/H2O reactions in oxyfuel flue gas compression and the stabilisation of the liquid during pressure reduction required for its disposal.
ANLEC R&D PRODUCTS FORMED FROM GAS IMPURITIES IN OXYFUEL-DERIVED CO2 COMPRESSION 2015 - 2016
The project will quantify the release (emissions) of NOX and mercury gases from condensates formed during CO2 compression, while providing options for their stabilisation, characterise the solid mercury formed in the compressor and provide options for waste utilisation. :
quantify the decomposition/stability of the wastes on depressurisation of condensates from CO2 compression to form NOx and mercury gases and provide experimentally-proven options for their stabilisation.
Establish the effect of recycled NOx to the CO2 compression, a feature of the Callide CPU and a possible common feature of other plant
establish the stability on decompression and removal of the non-condensable (solid) mercury species found to be retained in the compressor
provide options for their potential use for saleable products by a literature review
The project will be based on laboratory measurements which have been proven to match Callide Oxyfuel Project (COP) measurements , and is general for oxyfuel technology while also being specific for the COP flowsheet and Australian flue gas conditions,
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News • 25 Feb 2019
New technology offers promising manufacturing potential for Australia
An innovative low emission technology could see the development of a new manufacturing industry within Australia.
Dr Rohan Stanger
Positions
Research Associate
School of Engineering
College of Engineering, Science and Environment
Senior Lecturer
School of Engineering
College of Engineering, Science and Environment
Contact Details
rohan.stanger@newcastle.edu.au | |
Phone | (02) 4921 6108 |
Office
Room | EB126A |
---|---|
Building | Engineering EB |
Location | Callaghan University Drive Callaghan, NSW 2308 Australia |