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Gas switching reforming (GSR) for power generation with CO2 capture: Process efficiency improvement studies
Department of Energy and Process Engineering, Norwegian University of Science and Technology, Trondheim, Norway.ORCID iD: 0000-0002-4056-0454
Department of Energy and Process Engineering, Norwegian University of Science and Technology, Trondheim, Norway.
SINTEF Industry, Trondheim, Norway.
Department of Energy and Process Engineering, Norwegian University of Science and Technology, Trondheim, Norway ; SINTEF Industry, Trondheim, Norway.
2019 (English)In: Energy, ISSN 0360-5442, Vol. 167, p. 757-765Article in journal (Refereed) Published
Abstract [en]

This paper presents the process improvement studies of a combined cycle power plant integrated with a novel gas switching reforming (GSR) process for hydrogen production with integrated CO2 capture. The overall process is denoted as GSR-CC (gas switching reforming-combined cycle). Five cases are presented in which a systematic approach was adopted to improve the net electrical efficiency of the GSR-CC process. Two cases focus on reducing the number of unit operations and the other three cases focus on heat integration. The net electrical efficiency of the base case GSR-CC process is 45.8% whereas the improved GSR-CC has a net electrical efficiency of 51.1%. The efficiency penalty in the improved GSR-CC process is only 7.2 %-points with respect to the reference case natural gas combined cycle power plant without CO2 capture, and is less than post-combustion capture methods presented in literature. The CO2 avoidance in the GSR-CC is more than 95%. GSR-CC also gives a flexibility in the output from the plant in terms of pure H-2 or electricity and the optimal plant configuration is designed to maximize this flexibility.

Place, publisher, year, edition, pages
2019. Vol. 167, p. 757-765
National Category
Energy Systems
Identifiers
URN: urn:nbn:se:kth:diva-264378DOI: 10.1016/j.energy.2018.11.023ISI: 000456351800063Scopus ID: 2-s2.0-85057172426OAI: oai:DiVA.org:kth-264378DiVA, id: diva2:1373479
Note

QC 20191127

Available from: 2019-11-27 Created: 2019-11-27 Last updated: 2019-11-27Bibliographically approved

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The full text will be freely available from 2020-11-09 15:30
Available from 2020-11-09 15:30

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Nazir, Shareq Mohd

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