文献类型：会议论文

英文题名：Experimental studies on simultaneous removal of CO₂ and SO₂ in a polypropylene hollow fiber membrane contactor

作者：Lv, Yuexia[1,2];Yu, Xinhai[1];Tu, Shan-Tung[1];Yan, Jinyue[2,3];Dahlquist, Erik[2]

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]Malardalen Univ, Sch Sustainable Dev Soc & Technol, Vasteras, Sweden;[3]Royal Inst Technol, Sch Chem Sci & Engn, Stockholm, Sweden

会议论文集：3rd International Conference on Applied Energy (ICAE)

会议日期：MAY 16-18, 2011

会议地点：Perugia, ITALY

语种：英文

外文关键词：Simultaneous absorption; CO2 capture; SO2 removal; Membrane contactor; Partial wetting

摘要：Membrane gas absorption technology is a promising alternative to conventional technologies for the mitigation of acid gases. In this study, simultaneous removal of SO2 and CO2 from coal-fired flue gas was carried out in a polypropylene hollow fiber membrane contactor using aqueous monoethanolamine as the absorbent. The influences of liquid and gas flow rates on the simultaneous absorption performance of CO2 and SO2 were investigated. The experimental results indicated that the membrane contactor could eliminate these two sour gases simultaneously and effectively. Absorption of SO2 and CO2 was enhanced by the increase in liquid flow rate and decrease in gas flow rate. It was observed that a small amount of SO2 in the flue gas had a slight influence on the absorption of CO2. In addition, the membrane contactor was operated continuously for two weeks to evaluate its duration performance. The results showed that the CO2 mass transfer rate was decreased significantly with the operating time due to partial wetting of membrane pores. After 14 days of continuous operation, the CO2 mass transfer rate of the wetted membrane contactor was decreased by 41% but could be retrieved to 86% of the fresh one by increasing the gas phase pressure. (C) 2012 Elsevier Ltd. All rights reserved.