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为评价以气流床粉煤气化为基础的整体煤气化联合循环(IGCC)甲醇多联产系统配置方案,采用Aspen Plus软件对多联产系统进行系统模拟。配置方案中气化工艺分别采用废锅流程和激冷流程,IGCC和甲醇合成组合方式分别采用串联和并联,以相对节能率作为指标对所建立的多联产系统进行评价。结果表明:废锅流程节能效果优于激冷流程。废锅并联组合通往甲醇侧的合成气比例增大时,相对节能率随之增大;废锅串联组合合成甲醇循环气与新鲜气的比例增加时,相对节能率增大。采用分摊算法分别计算了IGCC甲醇废锅并联多联产系统的发电和甲醇合成的煤耗。随着通往甲醇合成侧的合成气量的增加,供电的煤耗显著减少,甲醇合成的煤耗略有减少。
In order to evaluate the IGCC plant configuration based on air entraining coal gasification, the Aspen Plus software was used to systematically simulate the polygeneration system. The gasification process in the configuration scheme adopts the waste pot process and the chilling process respectively. The combination of IGCC and methanol synthesis adopts series and parallel respectively, and the relative energy saving rate is used as an index to evaluate the polygeneration system established. The results show that the energy saving effect of the waste wok is better than the chilling process. The relative energy saving rate increases when the proportion of syngas to the methanol side increases in parallel with the waste boiler, and the relative energy saving rate increases when the ratio of the combined waste gas from the recirculating gas to the fresh gas increases. The coal consumption of power generation and methanol synthesis of IGCC methanol waste boiler parallel polygeneration system was calculated respectively by using the apportioning algorithm. As the amount of syngas to the methanol synthesis side increases, coal consumption for power supply decreases significantly and coal consumption for methanol synthesis decreases slightly.