P14-12 石炭ガス化 MCFC 発電システムの検討 : 実電池発電限界を考慮したシステム構成とその性能解析

概要

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Materials and heat balance in IG/MCFC combined system has been calculated. In the calculation, an anode recycling system and an anode heat exchange system are selected. The condition that non-deposition of carbon in anode inlet gas and that over 1% hydrogen composition in anode outlet gas has been supposed. In the case that the value of (H_2・CO_2)/(CO・H_2O) ratio decrease to be 0.3 times than equilibrium value, the maximum fuel utilisation of the anode recycling system is 80%, whereas the anode heat exchange system is operated at 90%. By changing the cooling value of cathode gas recycling line, the partial pressure of CO2 in cathode gas could be controlled. For the purpose to keep the CO2 partial pressure of cathode gas to be lower than 0.1MPa, the cooling ratio of cathode recycling line should be decreased. By decreasing of cooling ratio of cathode recycling line, the difference of thermal efficiency between discussed two systems has been decreased, and the difference of thermal efficiency calculated to be 1-2%.
一般社団法人日本機械学会の論文
2002-06-14