Reaction kinetics of CO_(2)capture into AMP/PZ/DME solid-liquid biphasic solvent  

作　　者：Xiaoyun Chen Guohua Jing Bihong Lv Zuoming Zhou 

机构地区：[1]Department of Environmental Science&Engineering,College of Chemical Engineering,Huaqiao University,Xiamen,Fujian 361021,China

出　　处：《Journal of Environmental Sciences》2025年第4期622-631,共10页环境科学学报(英文版)

基　　金：supported by the National Natural Science Foundation of China(No.22276064);the Youth Innovation Grant of Xiamen,Fujian Province(No.3502Z20206006);the MOE Key Laboratory of Resources and Environmental System Optimization(No.KLRE-KF202205);Fujian Science and Technology Project(No.2022Y3007).

摘　　要：The non-aqueous solid-liquid biphasic solvent of 2-amino-2-methyl-1-propanol(AMP)/piperazine(PZ)/dipropylene glycol dimethyl ether(DME)features a high CO_(2)absorption loading,favorable phase separation behavior and high regeneration efficiency.Different with the liquid-liquid phase change solvent,the reaction kinetics of CO_(2)capture into solid-liquid biphasic solvent was rarely studied.In the present work,the reaction kinetics of CO_(2)absorption into AMP/PZ/DME solid-liquid biphasic solvent was investigated into the double stirred kettle reactor.The absorption reaction followed a pseudo-first-order kinetic model according to the zwitterion mechanism.The overall reaction rate constant(kov)and the enhancement factor(E)of CO_(2)absorption both increased with increasing temperature.The total mass transfer resistance of the absorbent decreased with increasing temperature and increased with increasing absorption loading,so the higher reaction temperature was conducive to the absorption,and the liquid phase mass transfer resistance was the main factor affecting the absorption rate.

关 键 词：CO^(2)capture Solid−liquid phase−change Reaction kinetics Heat duty 

分 类 号：X51[环境科学与工程—环境工程]