文献类型：期刊文献

英文题名：CO2 capture with the absorbent of a mixed ionic liquid and amine solution considering the effects of SO2 and O2

作者：Yang, Jie[1];Yu, Xinhai[2,3];An, Lin[2];Tu, Shan-Tung[2];Yan, Jinyue[4,5]

机构：[1]Univ Shanghai Sci & Technol, Sch Energy & Power Engn, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech Engn, Key Lab Pressure Syst & Safety MOE, Shanghai, Peoples R China;[3]East China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai, Peoples R China;[4]Malardalen Univ, Sch Business Soc & Technol, Vasteras, Sweden;[5]Royal Inst Technol, Sch Chem Sci & Engn, Stockholm, Sweden

年份：2017

卷号：194

起止页码：9

外文期刊名：APPLIED ENERGY

收录：;EI(收录号：20171003423418);WOS:【SCI-EXPANDED(收录号:WOS:000399623600002)】；

基金：This study was financially supported by the China Natural Science Foundation (Contract Nos. 21476073 and 21176069) and the Fundamental Research Funds for the Central Universities (WG1213011). It was also sponsored by Shanghai Sailing Program (15YF1408400). Funding by Swedish Energy Agency and Swedish Research Council is also acknowledged.

语种：英文

外文关键词：CO2 capture; Absorption; Ionic liquids; Impurities; Thermal energy

摘要：Room-temperature ionic liquids (ILs) have recently been proposed as a potential candidate for CO2 capture. In this study, experiments were conducted in an absorption-desorption loop system to investigate the effects of SO2 and O-2 on CO2 capture using an aqueous amine solution mixed with IL. The gas mixture containing CO2, O-2, SO2 and N-2 in the composition range of flue gas from a coal-fired power plant after flue gas desulfurization was selected as the feed gas. It was found that the addition of hydrophilic IL of 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]) to a monoethanolamine (MEA) aqueous solution reduced the losses of MEA and water by lowering the saturated vapour pressure of the mixed absorbent. For hydrophobic IL of 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([hmim][Tf2N]), the MEA loss for 30 wt% MEA + 70 wt% [hmim][Tf2N] increased dramatically with the system running because carbonate, which was formed by MEA reacting with CO2, was insoluble in [hmim][Tf2N] at the absorber operation temperature of 323 K. The effects of O-2 and SO2 were relatively insignificant for the MEA and water losses. The aqueous amine solution mixed with [bmim][BEt] showed good performances with a CO2 removal efficiency of above 90% and the SO2 concentration at the absorber outlet below 20 ppb. No obvious IL loss was detected. For the absorbent of 30 wt% MEA + 50 wt% [bmim] [BF4] + 20 wt% H2O, the thermal energy consumption for absorbent regeneration is 33.8% lower than that of the aqueous MEA solution. (C) 2017 Elsevier Ltd. All rights reserved.