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本文以燃气轮机联合循环为基准系统,集成氧离子传输模(OTM)和两级熔融碳酸盐燃料电池(MCFC)提出了一个回收CO_2的新型燃气轮机复合动力系统。采用与余热驱动制冷相结合的CO_2压缩液化新方法减少了总系统能耗。通过Aspen plus模拟分析了CO_2回收率,电流密度,燃料利用率对系统性能的影响,研究结果表明当碳捕获率为80.06%时,新系统效率(55.83%)比传统不回收CO_2的燃气轮机联合循环(56.03%)仅仅低了0.2个百分点,比常温冷却压缩CO_2方法(55.25%)高出了近0.6个百分点。本文研究成果将为回收CO_2的MCFC复合系统研究提供有益参考。
In this paper, based on the gas turbine combined cycle system, a new gas turbine composite power system with CO2 recovery is proposed by integrated Oxygen Ion Transport (OTM) and two-stage molten carbonate fuel cell (MCFC). The new CO_2 compression liquefaction method combined with waste heat-driven cooling reduces the total system energy consumption. The effects of CO 2 recovery, current density and fuel utilization on system performance were simulated by Aspen plus. The results show that when the carbon capture rate is 80.06%, the new system efficiency (55.83%) is higher than that of traditional gas turbine combined cycle without CO 2 recovery (56.03%) was only 0.2% lower than the room temperature cooling compressed CO_2 method (55.25%) higher than the nearly 0.6 percentage points. The research results of this paper will provide useful reference for the research of MCFC with CO_2 recovery.