Modeling of propane dehydrogenation combined with chemical looping combustion of hydrogen in a fixed bed reactor  

作　　者：Junru Liu Rui Hu Xinlei Liu Qunfeng Zhang Guanghua Ye Zhijun Sui Xinggui Zhou 

机构地区：[1]State Key Laboratory of Chemical Engineering,School of Chemical Engineering,East China University of Science and Technology,Shanghai 200237,China

出　　处：《Chinese Journal of Chemical Engineering》2022年第7期165-173,共9页中国化学工程学报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (22078090 and 92034301);the Shanghai Rising-Star Program (21QA1402000);the Natural Science Foundation of Shanghai (21ZR1418100);the Open Project of State Key Laboratory of Chemical Engineering (SKL-ChE-21C02)

摘　　要：A redox process combining propane dehydrogenation(PDH)with selective hydrogen combustion(SHC)is proposed,modeled,simulated,and optimized.In this process,PDH and SHC catalysts are physically mixed in a fixed-bed reactor,so that the two reactions proceed simultaneously.The redox process can be up to 177.0%higher in propylene yield than the conventional process where only PDH catalysts are packed in the reactor.The reason is twofold:firstly,SHC reaction consumes hydrogen and then shifts PDH reaction equilibrium towards propylene;secondly,SHC reaction provides much heat to drive the highly endothermic PDH reaction.Considering propylene yield,operating time,and other factors,the preferable operating conditions for the redox process are a feed temperature of 973 K,a feed pressure of 0.1 MPa,and a mole ratio of H_(2) to C_(3)H_(8) of 0.15,and the optimal mass fraction of PDH catalyst is 0.5.This work should provide some useful guidance for the development of redox processes for propane dehydrogenation.

关 键 词：Propane dehydrogenation Selective hydrogen combustion SIMULATION OPTIMIZATION Redox process 

分 类 号：TQ038[化学工程]