高效分离乙烷/乙烯的烷烃选择性吸附剂研究进展  

Progress of ethane-selective adsorbents for efficient purification of ethylene

作　　者：张博 陈晓霏 赵思尧 周欣[1] ZHANG Bo;CHEN Xiaofei;ZHAO Siyao;ZHOU Xin(School of Chemistry and Chemical Engineering,South China University of Technology,Guangzhou 510640,Guangdong,China)

机构地区：[1]华南理工大学化学与化工学院,广东广州510640

出　　处：《化工学报》2022年第10期4255-4267,共13页CIESC Journal

基　　金：广东省基础与应用基础研究基金项目(2021A1515010119);广州市科技计划项目(202102020412);中国石油科技创新基金项目(2020D-5007-0408)。

摘　　要：乙烯是石油化学工业的基础原材料,聚合级乙烯工业纯化的关键挑战是去除其中的乙烷杂质,这一步骤难度大、能耗高。近年来,以乙烷选择性吸附剂为核心的吸附分离纯化技术快速发展,并得到学术界和工业界的关注。该技术可在温和工况下高选择性分离出乙烯中的乙烷杂质,显现出巨大潜力。本文总结了近年来乙烷选择性吸附剂(特别是乙烷选择性MOFs)的研究进展,并归纳阐释其选择性吸附机理。同时,在前人研究成果的基础上,总结可行的乙烷选择性吸附剂的设计策略,指出当前开发高效乙烷选择性吸附剂面临的挑战和未来的研究方向。Ethylene,the essential raw material in petroleum chemistry industry,is usually produced with ethane impurity.It is of industrial significance to separate ethane from ethylene for the production of polymerization grade ethylene.Conventional distillation operated at high pressure and low temperature suffers from intensive energy cost and crucial technical challenges.Adsorptive separation separates ethane from ethylene at mild condition,hence holds tremendous potential in industrial application.This paper reviews the most recent research progress of ethane-selective adsorbents,including metal-organic frameworks(MOFs),hydrogen-bonded organic frameworks(HOFs)and porous carbon.Moreover,the ethane-selective adsorption mechanisms are generalized and clarified in detail.In addition,the feasible design strategy of ethane-selective adsorbents is summarized,and the current challenges and future research direction are discussed.

关 键 词：吸附 分离 选择性 乙烷 乙烯 

分 类 号：TQ028.1[化学工程]