化工学报2025，Vol.76Issue(2)：731-743,13.DOI:10.11949/0438-1157.20241076
苯/环己烷/环己烯萃取精馏过程的流程设计与节能
Process design and energy saving for benzene/cyclohexane/cyclohexene extractive distillation process
摘要
Abstract
Cyclohexene is an important chemical raw material,and the partial hydrogenation of benzene is a primary method of production.However,the process generates unconverted benzene and cyclohexane as a by-product.The distillation of cyclohexene consumes a lot of energy.This study explores the potential for energy savings in the distillation processes of benzene,cyclohexane,and cyclohexene.Aspen Plus simulation was employed to optimize and compare the economic viability of a four-column industrial extractive distillation process(FC)and a three-column extractive distillation process(TC),identifying the three-column process as more efficient.Based on the TC process,the heat integrated process(TH),heat pump assisted heat integrated process(THP),dividing wall tower-benzene tower process(EC1),cyclohexane tower-dividing wall tower process(EC2),heat pump assisted dividing wall tower-benzene tower process(EHP1)and heat pump assisted cyclohexane tower-dividing wall tower process(EHP2)were proposed.The results indicate that the heat pump-assisted cyclohexane column-dividing wall column process is the most optimal,achieving reductions in annual total cost,energy consumption,and CO2 emissions by 21.1%,32.6%,and 31.7%,respectively,compared to the three-column extractive distillation process.关键词
精馏/纯化/分离/模拟/环己烯Key words
distillation/purification/separation/simulation/cyclohexene分类
化学化工引用本文复制引用
杨林睿,刘鉴漪,李玲,何永超,郑凯天,任建坡,许春建..苯/环己烷/环己烯萃取精馏过程的流程设计与节能[J].化工学报,2025,76(2):731-743,13.基金项目
化学工程联合国家重点实验室自主研究课题项目(SKL-ChE-22T06) （SKL-ChE-22T06）
