Olaleye, A.K. and Wang, M. orcid.org/0000-0001-9752-270X (2017) Conventional and advanced exergy analysis of post-combustion CO 2 capture based on chemical absorption integrated with supercritical coal-fired power plant. International Journal of Greenhouse Gas Control, 64. pp. 246-256. ISSN 1750-5836
Abstract
Post-combustion CO2 capture (PCC) based on chemical absorption is one of the strategic technologies identified to reduce emission of greenhouse gases from various power plants. However, PCC based on chemical absorption incurs serious energy penalty due to the use of energy for solvent regeneration. Reducing the energy/exergy use in this process can reduce energy penalties. It is also important to increase the efficiency of the CO2 capture system. This study focuses on: steady state simulation of a closed-loop PCC plant integrated with supercritical coal-fired power plant (SCPP); conventional and advanced exergy analyses of the PCC; and case studies on strategies to reduce exergy destruction in the system components. The conventional exergy analysis evaluates the amount and location of exergy destruction within the whole system. The advanced exergetic analysis estimates the sources of the exergy destruction in individual component or the whole system and the potential for reducing it. The results show that the energy consumption and the efficiency of the PCC process can be improved by recovering the avoidable exergy destroyed in the system components. This is important because for every 1% reduction in the energy required for capture, costs can be lowered to between 0.7–1%.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 Elsevier Ltd. This is an author produced version of a paper subsequently published in International Journal of Greenhouse Gas Control. Uploaded in accordance with the publisher's self-archiving policy. Article available under the terms of the CC-BY-NC-ND licence (https://creativecommons.org/licenses/by-nc-nd/4.0/) |
Keywords: | Post-combustion CO2 capture; Chemical absorption; Conventional exergy analysis; Advanced exergy analysis; Steady state simulation |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Chemical and Biological Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 06 Oct 2017 15:01 |
Last Modified: | 12 Aug 2018 00:38 |
Published Version: | https://doi.org/10.1016/j.ijggc.2017.08.002 |
Status: | Published |
Publisher: | Elsevier |
Refereed: | Yes |
Identification Number: | 10.1016/j.ijggc.2017.08.002 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:122045 |
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Filename: 2017_05_21_Akeem_PCC_SCPP_FullPaper_V5.pdf
Licence: CC-BY-NC-ND 4.0