The Experts below are selected from a list of 258 Experts worldwide ranked by ideXlab platform
Rohan Stanger - One of the best experts on this subject based on the ideXlab platform.
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gas cleaning challenges for coal fired oxy Fuel Technology with carbon capture and storage
Fuel, 2013Co-Authors: T F Wall, Rohan StangerAbstract:Abstract As one of the three major carbon capture technologies associated with carbon capture and storage (CCS), oxy-Fuel Technology is currently undergoing rapid development with a number of international demonstration projects commencing in the progression towards commercialisation. The CO 2 gas quality from oxy-Fuel differs from pre- and post-combustion technologies, having higher levels of inert gases, oxygen, sulphur and nitrogen gases and other impurities such as mercury in the flue gas. Operations are available for adjusting gas quality, in the furnace, and by cleaning and treating flue gas with further removal of impurities during compression. Thus, knowledge of the impact of gas quality on power plant and materials, on transport systems and also gas quality regulations for storage is required, as the cost of gas cleaning is likely to be more significant for oxy-Fuel than for other carbon capture technologies. The gas cleaning challenges are identified, with examples of two issues, one being the impact of sulphur impurities, and the other being gas quality impacts and control influencing CO 2 compression.
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demonstrations of coal fired oxy Fuel Technology for carbon capture and storage and issues with commercial deployment
International Journal of Greenhouse Gas Control, 2011Co-Authors: T F Wall, Rohan Stanger, Stanley SantosAbstract:Abstract As one of the three major carbon capture technologies associated with carbon capture and storage (CCS), oxy-Fuel Technology is currently undergoing rapid development with a number of international demonstration projects of scale 10–30 MWe having commenced and units with a scale of 250–300 MWe emerging in the progression towards commercialisation. Industrial scale testing of coal combustion and burners is also being conducted by Technology vendors. The paper details the current international status of the Technology; the contributions of current demonstrations; and a roadmap for commercial deployment. At its current state of maturity oxy-Fuel Technology may be considered semi-commercial, in that even if a unit was economically viable and could be provided by a vendor, the generator and vendor would need to share the technical risk. This is because guarantees could not at present be provided for operating characteristics associated with mature technologies such as reliability, emissions, ramp rate and spray control. This is due to the maturity of the Technology associated with the capability of vendors and associated design and operational uncertainties, associated with a lack of plant experience at scale. The projected development of oxy-Fuel Technology for first-generation plant is provided, using an ASU for oxygen supply, standard furnace designs with externally recirculated flue gas, and limited thermal integration of the ASU and compression plant with the power plant. Potential features of second generation Technology are listed. Listed issues delaying deployment indicate that market, economic, legal and issues of public acceptance are more significant than technical barriers.
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sulphur impacts during pulverised coal combustion in oxy Fuel Technology for carbon capture and storage
Progress in Energy and Combustion Science, 2011Co-Authors: Rohan Stanger, T F WallAbstract:The oxy-Fuel process is one of three carbon capture technologies which supply CO2 ready for sequestration – the others being post-combustion capture and IGCC with carbon capture. As yet no Technology has emerged as a clear winner in the race to commercial deployment. The oxy-Fuel process relies on recycled flue gas as the main heat carrier through the boiler and results in significantly different flue gas compositions. Sulphur has been shown in the study to have impacts in the furnace, during ash collection, CO2 compression and transport as well as storage, with many options for its removal or impact control. In particular, the effect of sulphur containing species can pose a risk for corrosion throughout the plant and transport pipelines. This paper presents a technical review of all laboratory and pilot work to identify impacts of sulphur impurities from throughout the oxy-Fuel process, from combustion, gas cleaning, compression to sequestration with removal and remedial options. An economic assessment of the optimum removal is not considered. Recent oxy-Fuel pilot trials performed in support of the Callide Oxy-Fuel Project and other pilot scale data are interpreted and combined with thermodynamic simulations to develop a greater fundamental understanding of the changes incurred by recycling the flue gas. The simulations include a sensitivity analysis of process variables and comparisons between air fired and oxy-Fuel fired conditions - such as combustion products, SO3 conversion and limestone addition.
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Industrial scale oxy-Fuel Technology demonstration
Oxy-Fuel Combustion for Power Generation and Carbon Dioxide (CO2) Capture, 2011Co-Authors: Terry Wall, Rohan StangerAbstract:Abstract: As one of the three major carbon capture and storage (CCS) technologies, oxy-Fuel Technology is currently undergoing rapid development with a number of demonstration projects commencing in the progression of the Technology towards commercialisation. An overview of the current pilot plants and demonstration projects is provided (current as of September 2009), together with aspects of a roadmap for the deployment of oxy-Fuel CCS Technology, with the early commercial phase commencing in 2020 and mature commercial phase in 2030. Industrial scale oxy-Fuel Technology demonstrations have major significance in defining research needs and, combined with regulations and incentives, are integral in reducing CCS cost and driving efficiency improvements prior to commercialisation.
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The current state of oxy-Fuel Technology: demonstrations and technical barriers
2010Co-Authors: Terry Wall, Rohan Stanger, Stanley SantosAbstract:As one of the three major carbon capture technologies associated with carbon capture and storage (CCS), oxy-Fuel Technology is currently undergoing rapid development with a number of international demonstration projects of scale 10-30 MWe having commenced and units with a scale of 250-300 MWe emerging in the progression towards commercialisation. Industrial scale testing of coal combustion and burners is also being conducted by Technology vendors.
T F Wall - One of the best experts on this subject based on the ideXlab platform.
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gas cleaning challenges for coal fired oxy Fuel Technology with carbon capture and storage
Fuel, 2013Co-Authors: T F Wall, Rohan StangerAbstract:Abstract As one of the three major carbon capture technologies associated with carbon capture and storage (CCS), oxy-Fuel Technology is currently undergoing rapid development with a number of international demonstration projects commencing in the progression towards commercialisation. The CO 2 gas quality from oxy-Fuel differs from pre- and post-combustion technologies, having higher levels of inert gases, oxygen, sulphur and nitrogen gases and other impurities such as mercury in the flue gas. Operations are available for adjusting gas quality, in the furnace, and by cleaning and treating flue gas with further removal of impurities during compression. Thus, knowledge of the impact of gas quality on power plant and materials, on transport systems and also gas quality regulations for storage is required, as the cost of gas cleaning is likely to be more significant for oxy-Fuel than for other carbon capture technologies. The gas cleaning challenges are identified, with examples of two issues, one being the impact of sulphur impurities, and the other being gas quality impacts and control influencing CO 2 compression.
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demonstrations of coal fired oxy Fuel Technology for carbon capture and storage and issues with commercial deployment
International Journal of Greenhouse Gas Control, 2011Co-Authors: T F Wall, Rohan Stanger, Stanley SantosAbstract:Abstract As one of the three major carbon capture technologies associated with carbon capture and storage (CCS), oxy-Fuel Technology is currently undergoing rapid development with a number of international demonstration projects of scale 10–30 MWe having commenced and units with a scale of 250–300 MWe emerging in the progression towards commercialisation. Industrial scale testing of coal combustion and burners is also being conducted by Technology vendors. The paper details the current international status of the Technology; the contributions of current demonstrations; and a roadmap for commercial deployment. At its current state of maturity oxy-Fuel Technology may be considered semi-commercial, in that even if a unit was economically viable and could be provided by a vendor, the generator and vendor would need to share the technical risk. This is because guarantees could not at present be provided for operating characteristics associated with mature technologies such as reliability, emissions, ramp rate and spray control. This is due to the maturity of the Technology associated with the capability of vendors and associated design and operational uncertainties, associated with a lack of plant experience at scale. The projected development of oxy-Fuel Technology for first-generation plant is provided, using an ASU for oxygen supply, standard furnace designs with externally recirculated flue gas, and limited thermal integration of the ASU and compression plant with the power plant. Potential features of second generation Technology are listed. Listed issues delaying deployment indicate that market, economic, legal and issues of public acceptance are more significant than technical barriers.
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sulphur impacts during pulverised coal combustion in oxy Fuel Technology for carbon capture and storage
Progress in Energy and Combustion Science, 2011Co-Authors: Rohan Stanger, T F WallAbstract:The oxy-Fuel process is one of three carbon capture technologies which supply CO2 ready for sequestration – the others being post-combustion capture and IGCC with carbon capture. As yet no Technology has emerged as a clear winner in the race to commercial deployment. The oxy-Fuel process relies on recycled flue gas as the main heat carrier through the boiler and results in significantly different flue gas compositions. Sulphur has been shown in the study to have impacts in the furnace, during ash collection, CO2 compression and transport as well as storage, with many options for its removal or impact control. In particular, the effect of sulphur containing species can pose a risk for corrosion throughout the plant and transport pipelines. This paper presents a technical review of all laboratory and pilot work to identify impacts of sulphur impurities from throughout the oxy-Fuel process, from combustion, gas cleaning, compression to sequestration with removal and remedial options. An economic assessment of the optimum removal is not considered. Recent oxy-Fuel pilot trials performed in support of the Callide Oxy-Fuel Project and other pilot scale data are interpreted and combined with thermodynamic simulations to develop a greater fundamental understanding of the changes incurred by recycling the flue gas. The simulations include a sensitivity analysis of process variables and comparisons between air fired and oxy-Fuel fired conditions - such as combustion products, SO3 conversion and limestone addition.
Stanley Santos - One of the best experts on this subject based on the ideXlab platform.
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demonstrations of coal fired oxy Fuel Technology for carbon capture and storage and issues with commercial deployment
International Journal of Greenhouse Gas Control, 2011Co-Authors: T F Wall, Rohan Stanger, Stanley SantosAbstract:Abstract As one of the three major carbon capture technologies associated with carbon capture and storage (CCS), oxy-Fuel Technology is currently undergoing rapid development with a number of international demonstration projects of scale 10–30 MWe having commenced and units with a scale of 250–300 MWe emerging in the progression towards commercialisation. Industrial scale testing of coal combustion and burners is also being conducted by Technology vendors. The paper details the current international status of the Technology; the contributions of current demonstrations; and a roadmap for commercial deployment. At its current state of maturity oxy-Fuel Technology may be considered semi-commercial, in that even if a unit was economically viable and could be provided by a vendor, the generator and vendor would need to share the technical risk. This is because guarantees could not at present be provided for operating characteristics associated with mature technologies such as reliability, emissions, ramp rate and spray control. This is due to the maturity of the Technology associated with the capability of vendors and associated design and operational uncertainties, associated with a lack of plant experience at scale. The projected development of oxy-Fuel Technology for first-generation plant is provided, using an ASU for oxygen supply, standard furnace designs with externally recirculated flue gas, and limited thermal integration of the ASU and compression plant with the power plant. Potential features of second generation Technology are listed. Listed issues delaying deployment indicate that market, economic, legal and issues of public acceptance are more significant than technical barriers.
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The current state of oxy-Fuel Technology: demonstrations and technical barriers
2010Co-Authors: Terry Wall, Rohan Stanger, Stanley SantosAbstract:As one of the three major carbon capture technologies associated with carbon capture and storage (CCS), oxy-Fuel Technology is currently undergoing rapid development with a number of international demonstration projects of scale 10-30 MWe having commenced and units with a scale of 250-300 MWe emerging in the progression towards commercialisation. Industrial scale testing of coal combustion and burners is also being conducted by Technology vendors.
Günter Scheffknecht - One of the best experts on this subject based on the ideXlab platform.
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Oxy-Fuel Technology: An experimental investigations into oil shale combustion under oxy-Fuel conditions
Fuel, 2013Co-Authors: Leema A. Al-makhadmeh, J. Maier, Mohammad Al-harahsheh, Günter ScheffknechtAbstract:Abstract Oil shale utilization has received much attention all over the world due to the rise of oil-prices; Jordan is one of the countries that have just started an intensive research for oil shale utilization. In this study the feasibility of oil shale combustion under oxy-Fuel conditions was investigated using a 20 kW Once-Through reactor at a combustion temperature of 1200 °C. To the investigators best knowledge, this is the first time that oxy-Fuel Technology is applied for oil shale combustion. So this study is considered a unique with respect to the conditions and the scale of the combustion experiments. Jordanian oil shale samples from El-Lajjun was used. Unstaged air-firing and oxy-Fuel combustion were investigated to study oil shale combustion behaviour. It is found that direct combustion of oil shale under oxy-Fuel conditions is feasible, 100% oil shale burnout was achieved for OF27 combustion as well as air-firing. In addition, the high S content in oil shale is a well known problem; our study aims to find if oxy-Fuel conditions will affect SO2 emissions as well as NO emissions. It is found that SO2 emissions during oil shale combustion under oxy-Fuel conditions is lower than air-firing by around 30%. In addition, NOx emission was also found to be lower and can be reduced efficiently by adopting staged combustion Technology under oxy-Fuel conditions as well as air-firing, however, the oxy-Fuel investigations were carried out without flue gas recirculation.
M.r. Petryk - One of the best experts on this subject based on the ideXlab platform.
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Experimental and computer simulation studies of dehydration on microporous adsorbent of natural gas used as motor Fuel
Fuel, 2019Co-Authors: M.r. Petryk, A. Khimich, J. FraissardAbstract:An experimental and theoretical study of the dehydration of natural gas using microporous silica beds for motor Fuel Technology in extreme winter climates is described. Analytical solutions to the problem of non-isothermal adsorption and desorption are based on Heaviside’s operational method and Laplace integral transform, but the development of calculations is quite original. Experimental and modeling distributions of moisture and temperatures of gas at the inlet and outlet of the silica beds for each adsorption – desorption phase at different times are presented. The distribution of moisture within the beds for the full dehydration – regeneration cycle is determined.
