A novel poly-generation system based on coal partial gasification is proposed which aims at co-production of hydrogen and electricity. Based on cascading utilization of coal and oxy-fuel combustion, the poly-generation system is simulated by Aspen Plus software. The simulation results show that the net efficiency of system presents an increasing-decreasing tendency and it reaches a maximum value when the carbon conversion is 80%. Under the determined carbon conversion, when O₂/coal ratio is 0.36, S/C ratio is 0.24, and S_shift/C ratio is 0.67, the energy and exergy efficiency of system reaches 60.24% and 55.68% respectively, which is higher than the referenced poly-generation system by 1.3%. The exergy analyses of subsystems are obtained for the guidance of improving the exergy efficiency of poly-generation system. In the end, experiments of coal partial gasification are conducted to verify the feasibility of the proposed system.

提出了一种基于煤部分气化的新型多联产系统，旨在联产氢和电。基于煤和含氧燃料燃烧的级联利用，利用Aspen Plus软件对多联产系统进行了仿真。仿真结果表明，当碳转化率为80％时，系统的净效率呈现出增加-减少的趋势，并达到最大值。在确定的碳转化率下，当O ₂ /煤比为0.36时，S / C比为0.24，并且S_位移/ C比为0.67，系统的能效和火用效率分别达到60.24％和55.68％，比参考的多联产系统高1.3％。对子系统进行了火用分析，为提高多联产系统的火用效率提供了指导。最后，进行了煤部分气化实验，以验证该系统的可行性。