Simulation and design of a heat-integrated double-effect reactive distillation process for propylene glycol methyl ether production  

作　　者：Ran An Shengxin Chen Shun Hou Yuting Zhu Chunhu Li Xinbao Zhu Ruixia Liu Weizhong An 

机构地区：[1]Department of Chemical Engineering,Ocean University of China,Qingdao 266100,China [2]Beijing Key Laboratory of Ionic Liquids Clean Process,CAS Key Laboratory of Green Process and Engineering,State Key Laboratory of Multiphase Complex Systems,Institute of Process Engineering,Chinese Academy of Sciences,Beijing 100190,China [3]College of Chemical Engineering,Nanjing Forestry University,Nanjing 210037,China [4]School of Chemical Engineering,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Chinese Journal of Chemical Engineering》2022年第12期103-114,共12页中国化学工程学报（英文版）

基　　金：supported by the National Nature Science Foundation of China(21878315 and 21808223);National Key Research and Development Program of China(2017YFA0206803);Innovation Academy for Green Manufacture;CAS;(IAGM2020C17);K.C.Wong Education Foundation(GJTD-2018-04)。

摘　　要：A double-effect reactive distillation(DERD)process was proposed for the production of propylene glycol methyl ether from propylene oxide and methanol to overcome the shortcoming of low selectivity and high-energy consumption in the tubular plug-flow reactor.A single-column reactive distillation(RD)process was conducted under optimized operating conditions based on sensitivity analysis as a reference.The results demonstrated that the proposed DERD process is able to achieve more than 95%selectivity of the desired product.After that,a design approach of the DERD process with an objective of the minimum operating cost was proposed to achieve further energy savings in the RD process.The proposed DERD configuration can provide a large energy-savings by totally utilization of the overhead vapor steam in the high-pressure RD column.A comparison of the single-column RD process revealed that the proposed DERD process can reduce the operating cost and the total annual cost of 25.3%and 30.7%,respectively,even though the total capital cost of DERD process is larger than that of the RD process.

关 键 词：Propylene oxide Reactive distillation Heat integration Propylene glycol monomethyl ether Process simulation 

分 类 号：TQ223.24[化学工程—有机化工] TQ028.31