CO_2回収用SOFC/ガスタービン複合発電のサイクル計算 [in Japanese] Cycle Analysis of Low and High H_2 Utilization SOFCs/Gas Turbine Combined Cycle for CO_2 Recovery [in Japanese]
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Global warming is mainly caused by CO<sub>2</sub> emission from thermal power plants, which burn fossil fuel with air. One of the countermeasure technologies to prevent the global warming is CO<sub>2</sub> recovery from combustion flue gas and the sequestration of CO<sub>2</sub> at the underground or in the ocean. SOFC and other fuel cells can produce high concentration CO<sub>2</sub>, because the reformed fuel gas reacts with oxygen electrochemically without being mixed by air, or diluted by N<sub>2</sub>. So we propose to operate the multi-staged SOFCs under high utilization of reformed fuel for getting high concentration CO<sub>2</sub>. In this report, we have estimated the multi-staged SOFCs performance considering H<sub>2</sub> diffusion and the combined cycle efficiency of multistage SOFC/gas turbine/CO<sub>2</sub> recovery power plant. The power generation efficiency of our CO<sub>2</sub> recovery combined cycle is 68.5% and the efficiency of conventional SOFC/GT cycle is 57.8% including the CO<sub>2</sub> recovery amine process.
- IEEJ Transactions on Power and Energy
IEEJ Transactions on Power and Energy 126(11), 1142-1148, 2006-11-01
The Institute of Electrical Engineers of Japan