The Experts below are selected from a list of 1263 Experts worldwide ranked by ideXlab platform
Jon Gibbins - One of the best experts on this subject based on the ideXlab platform.
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steam cycle options for the retrofit of coal and gas power plants with Postcombustion Capture
Energy Procedia, 2011Co-Authors: Mathieu Lucquiaud, Jon GibbinsAbstract:Abstract In a period where fast learning-curves for Capture technologies can be expected it is important that plants built as carbon Capture-ready avoid becoming potential stranded assets during the period of time when the plant operates without Capture. At the same time recent evidence shows that decarbonisation of electricity generation cannot be achieved without a CCS option for gas plants. This article first proposes steam turbine design options to build combined cycle gas turbine plants as carbon Capture-ready. Then steam cycle options for the existing fleet of coal-fired units are then presented. Although these plants have not been initially designed to operate with CCS it is possible to achieve effective thermodynamic integration–and an overall electricity output penalty in kWh per tonne of CO2 close to a plant built with Capture from the outset–with appropriate steam turbine retrofits. Finally, novel insights into the design of Capture-ready steam cycles are discussed for futureproofing pulverised coal plants that may have Capture fitted after the first learning cycles of Postcombustion Capture technologies occur or that may be upgraded over their lifetimes.
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techno economic assessment of future proofing coal plants with Postcombustion Capture against technology developments
Energy Procedia, 2011Co-Authors: Mathieu Lucquiaud, Jon Gibbins, Hannah Chalmers, Xi Liang, Olivia Errey, Mohammad Abu ZahraAbstract:Abstract While CCS is demonstrated globally utilities will face a period with fast learning curves for Capture technologies. Technology and cost uncertainty is a topic of particular concern for first-movers. For post-combustion Capture plants, costs are expected to decrease in the future and improved solvents are likely to become commercially available after the first CCS plants have started operating. Given that power generation assets are usually paid back over extensive periods of time it is important that, in this context, the first generation of plants and any Capture-ready plants can be future-proofed to incorporate future technological improvements. This paper presents selected results from a forthcoming report commissioned by the IEAGHG. A methodology based on a sensitivity analysis of solvent properties is used to identify pieces of equipment, which contribute to locking-in performance with Capture. Finally, some principles for analysing power plant economics with improved solvents and assessing the potential financial benefits in competitive electricity market of mitigating these technology risks are examined.
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flexible operation of coal fired power plants with Postcombustion Capture of carbon dioxide
Journal of Environmental Engineering, 2009Co-Authors: Hannah Chalmers, Mathieu Lucquiaud, Jon Gibbins, Matthew LeachAbstract:Carbon Capture and storage is one family of technologies that could be used to significantly reduce global carbon dioxide (C O2 ) emissions. This paper reviews the likely flexibility of power plants with Postcombustion Capture, with a focus on an improved characterization of the dynamic performance of power plants with C O2 Capture. The literature has focused on design and optimization for steady state operation of power plants with Capture, often at a single design point. When dynamic behavior is considered, it is possible that designs should be altered for best overall plant performance. Economic trade-offs between improving transport and storage scheme flexibility and constraining power plant operations should also be carefully analyzed, particularly if the Captured C O2 is to be used in another process such as enhanced oil recovery. Another important aspect of real plant operation will be adhering to legislative requirements. Further work is required to identify mechanisms that allow flexible operatio...
Mathieu Lucquiaud - One of the best experts on this subject based on the ideXlab platform.
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steam cycle options for the retrofit of coal and gas power plants with Postcombustion Capture
Energy Procedia, 2011Co-Authors: Mathieu Lucquiaud, Jon GibbinsAbstract:Abstract In a period where fast learning-curves for Capture technologies can be expected it is important that plants built as carbon Capture-ready avoid becoming potential stranded assets during the period of time when the plant operates without Capture. At the same time recent evidence shows that decarbonisation of electricity generation cannot be achieved without a CCS option for gas plants. This article first proposes steam turbine design options to build combined cycle gas turbine plants as carbon Capture-ready. Then steam cycle options for the existing fleet of coal-fired units are then presented. Although these plants have not been initially designed to operate with CCS it is possible to achieve effective thermodynamic integration–and an overall electricity output penalty in kWh per tonne of CO2 close to a plant built with Capture from the outset–with appropriate steam turbine retrofits. Finally, novel insights into the design of Capture-ready steam cycles are discussed for futureproofing pulverised coal plants that may have Capture fitted after the first learning cycles of Postcombustion Capture technologies occur or that may be upgraded over their lifetimes.
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techno economic assessment of future proofing coal plants with Postcombustion Capture against technology developments
Energy Procedia, 2011Co-Authors: Mathieu Lucquiaud, Jon Gibbins, Hannah Chalmers, Xi Liang, Olivia Errey, Mohammad Abu ZahraAbstract:Abstract While CCS is demonstrated globally utilities will face a period with fast learning curves for Capture technologies. Technology and cost uncertainty is a topic of particular concern for first-movers. For post-combustion Capture plants, costs are expected to decrease in the future and improved solvents are likely to become commercially available after the first CCS plants have started operating. Given that power generation assets are usually paid back over extensive periods of time it is important that, in this context, the first generation of plants and any Capture-ready plants can be future-proofed to incorporate future technological improvements. This paper presents selected results from a forthcoming report commissioned by the IEAGHG. A methodology based on a sensitivity analysis of solvent properties is used to identify pieces of equipment, which contribute to locking-in performance with Capture. Finally, some principles for analysing power plant economics with improved solvents and assessing the potential financial benefits in competitive electricity market of mitigating these technology risks are examined.
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flexible operation of coal fired power plants with Postcombustion Capture of carbon dioxide
Journal of Environmental Engineering, 2009Co-Authors: Hannah Chalmers, Mathieu Lucquiaud, Jon Gibbins, Matthew LeachAbstract:Carbon Capture and storage is one family of technologies that could be used to significantly reduce global carbon dioxide (C O2 ) emissions. This paper reviews the likely flexibility of power plants with Postcombustion Capture, with a focus on an improved characterization of the dynamic performance of power plants with C O2 Capture. The literature has focused on design and optimization for steady state operation of power plants with Capture, often at a single design point. When dynamic behavior is considered, it is possible that designs should be altered for best overall plant performance. Economic trade-offs between improving transport and storage scheme flexibility and constraining power plant operations should also be carefully analyzed, particularly if the Captured C O2 is to be used in another process such as enhanced oil recovery. Another important aspect of real plant operation will be adhering to legislative requirements. Further work is required to identify mechanisms that allow flexible operatio...
Fanqing Meng - One of the best experts on this subject based on the ideXlab platform.
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novel Postcombustion Capture process for co2 from the flue gas of coal fired power plants using a green deep eutectic solvent
ACS Sustainable Chemistry & Engineering, 2020Co-Authors: Yinglong Wang, Yigang Liu, Xiaobin Liu, Jingwei Yang, Zhaoyou Zhu, Jun Gao, Fanqing MengAbstract:Green, efficient, and low energy consumption Capture of CO2 from the flue gas of coal-fired power plants has been one of the most popular research topics in the world. In this work, a concept proce...
Gerhard Schmitz - One of the best experts on this subject based on the ideXlab platform.
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Dynamic Simulation and Investigation of the Startup Process of a Postcombustion-Capture Plant
2018Co-Authors: Thomas Marx-schubach, Gerhard SchmitzAbstract:Carbon Capture is an important possibility to reduce carbon dioxide emissions. To be able to study the startup process of such an amine-scrubbing process, a startup model of a Postcombustion-Capture plant (pcc-plant) was developed in the Modelica language and validated with measured data from a pilot plant in Heilbronn, Germany. Afterward, the process was scaled up in the model to handle the entire flue-gas flow of a 875 MW coal-fired power plant, resulting in three parallel Capture plants. A case study was carried out to investigate the startup process of the pcc-plant in detail, indicating that the startup time increased drastically when the plant is operating at partial load. The startup time for a cold start from the beginning of steam flow to a 90% carbon-Capture rate is t = 1900 s at full load and t = 11 075 s at 15% load. The total heat demand in the reboiler of one pcc-plant is 326 GJ at full load and 370 GJ at 15% load. Other results show that the startup time increases linearly with increasing total amount of solvent and that the steam flow rate and solvent flow rate have a high impact on the startup time
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Dynamic Behavior of Coal-Fired Power Plants with Postcombustion CO2 Capture
Industrial & Engineering Chemistry Research, 2016Co-Authors: Kai Wellner, Thomas Marx-schubach, Gerhard SchmitzAbstract:The combined operation of Postcombustion CO2 Capture and a power plant is a complex process with significant mutual interactions. Although the application of CO2 Capture imposes an efficiency penalty on the power plant, it also provides the opportunity to operate the power plant in a more flexible way. To analyze this process, a detailed model of a Postcombustion Capture plant is developed and validated with measurement data. Afterward, the model is coupled to the model of a hard coal-fired power plant to study the effects of a joint operation. In a case study scenario, the steam extraction of the carbon Capture plant is reduced by 50% to increase the power generation of the power plant. The results indicate that it is possible to provide primary frequency control by using this mode of operation.
Paul Feron - One of the best experts on this subject based on the ideXlab platform.
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systematic study of aqueous monoethanolamine based co2 Capture process model development and process improvement
Energy Science & Engineering, 2016Co-Authors: Ashleigh Cousins, Paul Feron, Moses O Tade, Weiliang Luo, Jian ChenAbstract:In this paper, we present improvements to Postcombustion Capture (PCC) processes based on aqueous monoethanolamine (MEA). First, a rigorous, rate-based model of the carbon dioxide (CO2) Capture process from flue gas by aqueous MEA was developed using Aspen Plus, and validated against results from the PCC pilot plant trials located at the coal-fired Tarong power station in Queensland, Australia. The model satisfactorily predicted the comprehensive experimental results from CO2 absorption and CO2 stripping process. The model was then employed to guide the systematic study of the MEA-based CO2 Capture process for the reduction in regeneration energy penalty through parameter optimization and process modification. Important process parameters such as MEA concentration, lean CO2 loading, lean temperature, and stripper pressure were optimized. The process modifications were investigated, which included the absorber intercooling, rich-split, and stripper interheating processes. The minimum regeneration energy obtained from the combined parameter optimization and process modification was 3.1 MJ/kg CO2. This study suggests that the combination of a validated rate-based model and process simulation can be used as an effective tool to guide sophisticated process plant, equipment design and process improvement.
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technical and energy performance of an advanced aqueous ammonia based co2 Capture technology for a 500 mw coal fired power station
Environmental Science & Technology, 2015Co-Authors: Kangkang Li, Hai Yu, Paul Feron, Moses O Tade, Leigh WardhaughAbstract:Using a rate-based model, we assessed the technical feasibility and energy performance of an advanced aqueous-ammonia-based Postcombustion Capture process integrated with a coal-fired power station. The Capture process consists of three identical process trains in parallel, each containing a CO2 Capture unit, an NH3 recycling unit, a water separation unit, and a CO2 compressor. A sensitivity study of important parameters, such as NH3 concentration, lean CO2 loading, and stripper pressure, was performed to minimize the energy consumption involved in the CO2 Capture process. Process modifications of the rich-split process and the interheating process were investigated to further reduce the solvent regeneration energy. The integrated Capture system was then evaluated in terms of the mass balance and the energy consumption of each unit. The results show that our advanced ammonia process is technically feasible and energy-competitive, with a low net power-plant efficiency penalty of 7.7%.
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amine functionalized titania based porous structures for carbon dioxide Postcombustion Capture
Journal of Physical Chemistry C, 2013Co-Authors: Cindy C Aquino, Paul Feron, Gilles Richner, Maryline Chee Kimling, Dehong Chen, Graeme Puxty, Rachel A CarusoAbstract:An amine-grafted solid sorbent is a promising alternative to aqueous amine scrubbing for removing CO2 from the flue gas of coal power plants. In this study, phosphonic and carboxylic acids have been investigated as alternative anchor groups to trimethoxysilanes to synthesize amine-functionalized TiO2-based sorbents. Several supports, namely, mesoporous TiO2 beads, TiO2 nanoparticles (Degussa P25), and TiO2/ZrO2 composite beads, and a range of amines (1, 2, and 3 carbon-chain primary amine) have been assessed for CO2 adsorption at 30 °C and up to 101 kPa CO2. As a general trend, CO2 adsorption capacity increased with the carbon-chain length of the amine. Finally, materials functionalized with amino acids, l-glutamine or l-arginine, were investigated; the latter showed the highest CO2 adsorption capacity (0.4 mmol/g at 30 °C and 20 kPa CO2) due to the higher pKa (12.10) of one of the amino groups.
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towards commercial scale Postcombustion Capture of co2 with monoethanolamine solvent key considerations for solvent management and environmental impacts
Environmental Science & Technology, 2012Co-Authors: Alicia J. Reynolds, Samuel B O Adeloju, Erik Meuleman, Vincent T Verheyen, Paul FeronAbstract:Chemical absorption with aqueous amine solvents is the most advanced technology for Postcombustion Capture (PCC) of CO2 from coal-fired power stations and a number of pilot scale programs are evaluating novel solvents, optimizing energy efficiency, and validating engineering models. This review demonstrates that the development of commercial scale PCC also requires effective solvent management guidelines to ensure minimization of potential technical and environmental risks. Furthermore, the review reveals that while solvent degradation has been identified as a key source of solvent consumption in laboratory scale studies, it has not been validated at pilot scale. Yet this is crucial as solvent degradation products, such as organic acids, can increase corrosivity and reduce the CO2 absorption capacity of the solvent. It also highlights the need for the development of corrosion and solvent reclamation technologies, as well as strategies to minimize emissions of solvent and degradation products, such as ammo...