基于燃料分级转化的生物质化学链过程模拟  

Simulation of Biomass Chemical Looping Process Based on Staged Conversion of Fuel

作　　者：高祥雨 何笑 胡国超 张秀丽 刘永卓[1] GAO Xiangyu;HE Xiao;HU Guochao;ZHANG Xiuli;LIU Yongzhuo(College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,China;Qingdao Engineering Vocational College,Qingdao 266112,China)

机构地区：[1]青岛科技大学化工学院,山东青岛266042 [2]青岛工程职业学院,山东青岛266112

出　　处：《青岛科技大学学报（自然科学版）》2024年第6期40-46,共7页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：省部共建煤炭高效利用与绿色化工国家重点实验室开放课题项目(2022-K3);青岛市社会科学规划项目(QDSKL2201347)。

摘　　要：提出了基于燃料分级转化的生物质化学链(SC-BCL)的新工艺。该工艺通过分级转化的优势实现了同时获得高品质生物油和高品质合成气,并且充分发挥了生物质高挥发分、高含氧量。首先,利用Aspen Plus对该工艺进行了模拟分析。其次,探究了热解温度对三相产率的影响、气化温度和载氧体与生物质进料质量比(OC/生物质)对气化产物的影响。最后,对基于燃料分级转化的生物质化学链过程进行了[火用]分析。结果表明,在最佳操作条件下,热解反应器中热解油产率达到了54.98%(质量分数),气化反应器的碳转化率达到了100%,合成气流量达到了1.08 kmol·h^(-1),气化产品组成稳定,系统[火用]效率为84.45%,产品[火用]效率为64.98%。A new process of biomass chemical looping based on staged conversion of fuel was proposed.Through the advantages of staged conversion,high quality bio-oil and high quality syngas can be obtained at the same time,and the high volatile content and high oxygen content of biomass can be fully utilized.Firstly,Aspen Plus was used to simulate the process.Secondly,the influences of pyrolysis temperature on the three phase yield,gasification temperature and the Biomass mass ratio(OC/Biomass)have been investigated.Exergy analysis of biomass chemical looping processes based on staged conversion of fuel was carried out.The results showed that under optimal operating conditions,the pyrolysis oil yield reached the maximum value of 54.98%,the carbon conversion rate of the gasification reactor reached 100%,the syngas flow rate reached 1.08 kmol·h^(-1),the gas phase product composition was stable,the system exergy efficiency is 84.45%and the product exergy efficiency is 64.98%.

关 键 词：燃料分级转化 化学链 Aspen Plus [火用] 

分 类 号：TQ021.1[化学工程]