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Title: Coupling chemical looping combustion of solid fuels with advanced steam cycles for CO₂ capture : a process modelling study
Authors: Syed Saqline
Chua, Zhen Yee
Liu, Wen
Keywords: Engineering::Chemical engineering
Issue Date: 2021
Source: 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-.
Project: RG112/18 
Journal: Energy Conversion and Management 
Abstract: 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.
ISSN: 0196-8904
DOI: 10.1016/j.enconman.2021.114455
DOI (Related Dataset): 10.21979/N9/KUWJ9J
Schools: School of Chemical and Biomedical Engineering 
Research Centres: Nanyang Environment and Water Research Institute 
Residues and Resource Reclamation Centre 
Rights: © 2021 Elsevier Ltd. All rights reserved. This paper was published in Energy Conversion and Management and is made available with permission of Elsevier Ltd.
Fulltext Permission: embargo_20240308
Fulltext Availability: With Fulltext
Appears in Collections:NEWRI Journal Articles
SCBE Journal Articles

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  Until 2024-03-08
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  Until 2024-03-08
Supporting Information583.04 kBAdobe PDFUnder embargo until Mar 08, 2024

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