文献类型：期刊文献

英文题名：Multilevel screening of ionic liquid absorbents for simultaneous removal of CO2 and H2S from natural gas

作者：Wang, Jingwen[1];Song, Zhen[2,3];Cheng, Hongye[1];Chen, Lifang[1];Deng, Liyuan[4];Qi, Zhiwen[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China;[2]Max Planck Inst Dynam Complex Tech Syst, Proc Syst Engn, Sandtorstr 1, D-39106 Magdeburg, Germany;[3]Otto von Guericke Univ, Proc Syst Engn, Univ Pl 2, D-39106 Magdeburg, Germany;[4]Norwegian Univ Sci & Technol, Dept Chem Engn, Sem Scelandsvei 4, N-7491 Trondheim, Norway

年份：2020

卷号：248

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20202008650009);WOS:【SCI-EXPANDED(收录号:WOS:000538827600056)】；

基金：The financial support from National Natural Science Foundation of China (21576081, 21776074 and 2181101120) is greatly acknowledged.

语种：英文

外文关键词：Ionic liquid screening; Simultaneous acidic gas removal; Henry's law constant; Vapor-liquid equilibria; Process simulation

摘要：For the selection of practically attractive ionic liquids (ILs) as absorbents for simultaneous CO2 and H2S removal from natural gas (NG), a multilevel screening method combining Henry's law constant (H) and vapor-liquid equilibria (VLE) based prediction of thermodynamic properties, physical properties estimation, and process simulation is presented. To begin with, an H-based Absorption-Selectivity-Desorption index (ASDI) is employed to prescreen potential ILs that have promising target properties at infinite dilution condition. Following this, their simultaneous CO2 and H2S removal performances are further evaluated from the VLE of {IL + NG} systems at the specific composition of interest. After the thermodynamic screening, key physical properties of the obtained ILs are estimated by group contribution methods and the IL stability is assessed empirically to find out solvents suitable for practical application. Finally, continuous acidic gas removal processes based on the remaining ILs are simulated and compared by Aspen Plus, thereby identifying the best ILs from the process point of view.