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Cycle analysis of low and high H 2 utilization SOFCs/gas turbine combined cycle for CO 2 recovery
Author(s) -
Taniuchi Takuya,
Sunakawa Daisuke,
Nagahama Mitsuyuki,
Araki Takuto,
Onda Kazuo,
Kato Toru
Publication year - 2008
Publication title -
electronics and communications in japan
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.131
H-Index - 13
eISSN - 1942-9541
pISSN - 1942-9533
DOI - 10.1002/ecj.10165
Subject(s) - flue gas , combined cycle , gas turbines , waste management , environmental science , combustion , turbine , engineering , process engineering , chemistry , mechanical engineering , organic chemistry
Global warming is mainly caused by CO 2 emission from thermal power plants, which burn fossil fuel with air. One of the countermeasure technologies to prevent global warming is CO 2 recovery from combustion flue gas and the sequestration of CO 2 underground or in the ocean. SOFC and other fuel cells can produce high‐concentration CO 2 , because the reformed fuel gas reacts with oxygen electrochemically without being mixed with air, or diluted by N 2 . Thus, we propose to operate the multistage SOFCs under high utilization of reformed fuel for obtaining high‐concentration CO 2 . In this report, we have estimated the multistage SOFCs' performance considering H 2 diffusion and the combined cycle efficiency of multistage SOFC/gas turbine/CO 2 recovery power plant. The power generation efficiency of our CO 2 recovery combined cycle is 68.5% and the efficiency of conventional SOFC/GT cycle is 57.8% including the CO 2 recovery amine process. © 2009 Wiley Periodicals, Inc. Electron Comm Jpn, 91(10): 38–45, 2008; Published online in Wiley InterScience ( www.interscience. wiley.com ). DOI 10.1002/ecj.10165
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