化工学报2013，Vol.64Issue(2)：600-608,9.DOI:10.3969/j.issn.0438-1157.2013.02.026
离子液体-水复配吸收剂捕获CO2性能
CO2 capture with complex absorbent of ionic liquid and water
摘要
Abstract
A sort of functional hydrophilic ionic liquid (ILs), [NH2-C3mim][Br], was prepared by the green synthesis route. Aiming at reduction of operational costs for CO2 absorption and regeneration and reuse of absorbent, experiments on CO2 capture and absorbent-desorption for regeneration and reuse were carried out. Experimental results showed that specific capacity of CO2 (on the basis of complex absorbent or ILs component) changed with the concentration of ILs in the complex absorbent. In the initial stage, CO2 absorption rates changed obviously with the concentration of ILs, and an appropriate ratio of complex absorbent was obtained (mass ratio of ILs to water was 1. 38 : 1). Moreover, continuous CO2 capture and absorbent regeneration experiments were carried out with a pilot scale equipment for absorption enhanced by super gravity field and desorption via counter-current contact under vacuum or by heating with water-based ionic liquid solution, improved hot potassium carbonate and activated complex alcamines as absorbent respectively. The results indicated good absorption for CO2 capture with water-based ionic liquid solution, improved hot potassium carbonate and activated complex alcamines under super gravity field, and the absorption rates for CO2 were 98%, 96% and 90% respectively. Adsorbent could be regenerated and reused after CO2 removal under vacuum or by heating. Water-based ionic liquid solution desorption under vacuum and at normal temperature was more practicable.关键词
功能化离子液体/复配水基吸收剂/超重力场/碳捕获Key words
functional ionic liquids/water based complex absorbent/super gravity field/carbon dioxide capture分类
化学化工引用本文复制引用
李天成,孔庆华,陈郴,朴香兰..离子液体-水复配吸收剂捕获CO2性能[J].化工学报,2013,64(2):600-608,9.基金项目
化学工程联合国家重点实验室开放课题(SKL-ChE-10A02) （SKL-ChE-10A02）
"十一五"国家科技支撑计划项目(2008BADC4B012). （2008BADC4B012）
