Coupling chemical looping combustion of solid fuels with advanced steam cycles for CO₂ capture : a process modelling study
Chemical looping combustion is a cost-competitive solution for producing low carbon electricity. In this paper, we investigate by means of a process modelling study, the coupling of chemical looping combustion of solid fuels with advanced steam-based power cycles, viz. supercritical, ultra-supercrit...
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sg-ntu-dr.10356-1556532023-06-09T04:47:13Z Coupling chemical looping combustion of solid fuels with advanced steam cycles for CO₂ capture : a process modelling study Syed Saqline Chua, Zhen Yee Liu, Wen School of Chemical and Biomedical Engineering Nanyang Environment and Water Research Institute Residues and Resource Reclamation Centre Engineering::Chemical engineering Chemical Looping Combustion Process Simulation Chemical looping combustion is a cost-competitive solution for producing low carbon electricity. In this paper, we investigate by means of a process modelling study, the coupling of chemical looping combustion of solid fuels with advanced steam-based power cycles, viz. supercritical, ultra-supercritical and advanced ultra-supercritical Rankine cycles. The energy and exergy efficiencies of the various chemical looping combustion power plant configurations are compared against the reference plants without carbon capture. Our models incorporate practical considerations for reactor design. With an upper operating temperature limit of 950 °C, the maximum efficiencies achievable by integrated gasification combined cycle chemical looping combustion (IGCC–CLC) and in situ gasification chemical looping combustion power plants (iG-CLC) are 41.3% and 41.5%, respectively. Overall, iG-CLC emerges as the most efficient CLC configuration. Comparing to an integrated gasification combined cycle without carbon capture, the energy efficiency penalties for capturing CO2 from iG-CLC coupled with subcritical, supercritical, ultra-supercritical or advanced ultra-supercritical steam cycles are 5.1%, 5.0%, 5.2% or 13.0%, respectively. The biomass-fired chemical looping combustion power plants also show low energy efficiency penalties (<2.5%) compared to the reference biomass power plants without CO2 capture. Our modelling results suggest that chemical looping combustion will remain an attractive carbon capture technology for solid fuel power plants, in a future when supercritical steam turbines become the norm. Ministry of Education (MOE) Nanyang Technological University National Research Foundation (NRF) Submitted/Accepted version The authors wish to acknowledge the financial support by the Start-Up Grant from Nanyang Technological University and Academic Research Fund Tier 1 (Grant No. RG112/18) from the Singapore Ministry of Education. The work is also funded by National Research Foundation (NRF), Prime Minister’s Office, Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) programme. 2022-03-11T04:31:45Z 2022-03-11T04:31:45Z 2021 Journal Article Syed Saqline, Chua, Z. Y. & Liu, W. (2021). Coupling chemical looping combustion of solid fuels with advanced steam cycles for CO₂ capture : a process modelling study. Energy Conversion and Management, 244, 114455-. https://dx.doi.org/10.1016/j.enconman.2021.114455 0196-8904 https://hdl.handle.net/10356/155653 10.1016/j.enconman.2021.114455 2-s2.0-85109114327 244 114455 en RG112/18 Energy Conversion and Management 10.21979/N9/KUWJ9J © 2021 Elsevier Ltd. All rights reserved. This paper was published in Energy Conversion and Management and is made available with permission of Elsevier Ltd. application/pdf application/pdf |
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Engineering::Chemical engineering Chemical Looping Combustion Process Simulation Syed Saqline Chua, Zhen Yee Liu, Wen Coupling chemical looping combustion of solid fuels with advanced steam cycles for CO₂ capture : a process modelling study |
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Chemical looping combustion is a cost-competitive solution for producing low carbon electricity. In this paper, we investigate by means of a process modelling study, the coupling of chemical looping combustion of solid fuels with advanced steam-based power cycles, viz. supercritical, ultra-supercritical and advanced ultra-supercritical Rankine cycles. The energy and exergy efficiencies of the various chemical looping combustion power plant configurations are compared against the reference plants without carbon capture. Our models incorporate practical considerations for reactor design. With an upper operating temperature limit of 950 °C, the maximum efficiencies achievable by integrated gasification combined cycle chemical looping combustion (IGCC–CLC) and in situ gasification chemical looping combustion power plants (iG-CLC) are 41.3% and 41.5%, respectively. Overall, iG-CLC emerges as the most efficient CLC configuration. Comparing to an integrated gasification combined cycle without carbon capture, the energy efficiency penalties for capturing CO2 from iG-CLC coupled with subcritical, supercritical, ultra-supercritical or advanced ultra-supercritical steam cycles are 5.1%, 5.0%, 5.2% or 13.0%, respectively. The biomass-fired chemical looping combustion power plants also show low energy efficiency penalties (<2.5%) compared to the reference biomass power plants without CO2 capture. Our modelling results suggest that chemical looping combustion will remain an attractive carbon capture technology for solid fuel power plants, in a future when supercritical steam turbines become the norm. |
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School of Chemical and Biomedical Engineering |
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School of Chemical and Biomedical Engineering Syed Saqline Chua, Zhen Yee Liu, Wen |
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Syed Saqline Chua, Zhen Yee Liu, Wen |
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Syed Saqline |
title |
Coupling chemical looping combustion of solid fuels with advanced steam cycles for CO₂ capture : a process modelling study |
title_short |
Coupling chemical looping combustion of solid fuels with advanced steam cycles for CO₂ capture : a process modelling study |
title_full |
Coupling chemical looping combustion of solid fuels with advanced steam cycles for CO₂ capture : a process modelling study |
title_fullStr |
Coupling chemical looping combustion of solid fuels with advanced steam cycles for CO₂ capture : a process modelling study |
title_full_unstemmed |
Coupling chemical looping combustion of solid fuels with advanced steam cycles for CO₂ capture : a process modelling study |
title_sort |
coupling chemical looping combustion of solid fuels with advanced steam cycles for co₂ capture : a process modelling study |
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2022 |
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https://hdl.handle.net/10356/155653 |
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1772828039161315328 |