生物质化学链气化制取合成气模拟研究

摘要

利用Aspen Plus软件建立生物质化学链气化制取合成气模型,对铁基生物质化学链气化制取合成气进行模拟计算,分析气化过程中温度和压力等因素变化对生物质气化制取合成气的影响,探讨了氧载体存在对生物质气化过程的影响.结果表明,H2和CO是生物质化学链气化产生的合成气中最主要的两种产物,气化温度的提高对气化过程是有利的,而压力的提高降低了气化效果,气化温度在800℃～850℃较为适宜；载氧体的存在能显著提高合成气的产率.%Simulation of syngas production from biomass gasification with Fe2O3 is carried out with Aspen Plus software, the effects of gasification temperature, operation pressures, and the presence of oxygen carrier on the distribution of the gas components are investigated. The results show that, H2 and CO are the primary products in the syngas of biomass chemical looping gasification. The increase of gasification temperature is beneficial to gasification process but the increase of react pressure is of no advantage for gasification process, and the optimal gasification temperature is between 800℃ and 850℃. The existence of oxygen carrier can improve the yield of syngas.