文献类型：期刊文献

英文题名：CO2 Capture Using Amine Solution Mixed with Ionic Liquid

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

机构：[1]E China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[3]Malardalen Univ, Sch Sustainable Dev Soc & Technol, Vasteras, Sweden;[4]Royal Inst Technol, Sch Chem Sci & Engn, Stockholm, Sweden

年份：2014

卷号：53

期号：7

起止页码：2790

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20140917406188);WOS:【SCI-EXPANDED(收录号:WOS:000332262000027)】；

基金：This study was financially supported by the China Natural Science Foundation (Contract No. 21176069), Program for New Century Excellent Talents in University (NCET-10-0380) and the Fundamental Research Funds for the Central Universities (WG1213011).

语种：英文

外文关键词：Coal - Energy utilization - Ethanolamines - Gas absorption - Gas plants - Fossil fuel power plants - Coal fired power plant - Flues - Amino acids - Desorption - Flue gases - Viscosity - Carbon dioxide

摘要：It is a focus to reduce the energy consumption and operating cost of CO2 capture from low-pressure flue gas streams of power plants using an aqueous amine-based absorbent. In this study, CO2 capture experiments were conducted in an absorption-desorption loop system using amine-based absorbents. The gas mixture containing CO2, O-2, SO2, and N-2 in the composition range of flue gas from coal-fired power plant after flue gas desulfurization was selected as the feed gas. For an aqueous amine solution, the largest contribution to monoethanolamine (MEA) loss was made by evaporation during desorption, followed by the formation of sulfate and heat-stable salts. To reduce MBA loss and meanwhile decrease the energy consumption during CO2 desorption, an aqueous amine solution mixed with ionic liquid (30 wt % MBA + 40 wt % [bmim][BF4] + 30 wt % H2O) was proposed. The energy consumption of the mixed ionic liquid solution for absorbent regeneration was 37.2% lower than that of aqueous MEA solution. The MEA loss per ton of captured CO2 for the mixed solution was 1.16 kg, which is much lower than that of 3.55 kg for the aqueous amine solution. No ionic liquid loss was detected. In addition, the mixed ionic liquid solution showed a low viscosity of 3.54 mPa s at 323 K, indicating that the ionic liquid disadvantage of high viscosity can be overcome for absorbent delivery of CO2 capture.