Micro-interface enhanced mass transfer sodium carbonate absorption carbon dioxide reaction  

作　　者：Hu Shen Yingyu Xu Jigang An Bowen Jiang Jinnan Sun Guoqiang Yang Zhibing Zhang 

机构地区：[1]Key Laboratory of Mesoscopic Chemistry of Ministry of Education(MOE),School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210023,China

出　　处：《Chinese Journal of Chemical Engineering》2023年第12期208-223,共16页中国化学工程学报（英文版）

基　　金：Natural Science Foundation of Jiangsu Province(BK20210185);National Natural Science Foundation of China(22278202).

摘　　要：Micro-interface intensified reactor(MIR)can be applied in series/parallel in the absorption of CO_(2)in industrial gases by Na_(2)CO_(3)due to the ability to produce large numbers of stable microbubbles.This work focuses on the variation pattern of mass transfer characteristics parameters of the reaction gas in Na_(2)CO_(3) solution under the influence of different solution properties and operating parameters in the reaction of CO_(2)absorption by Na2CO3.The mass transfer characteristics parameters include bubble Sauter mean diameter,gas holdup,interfacial area,liquid side mass transfer coefficient,and liquid side volume mass transfer coefficient kLa.The solution properties and operating parameters include Na2CO3 concentration(0.05–2.0 mol·L^(-1)),superficial gas velocity(0.00221–0.01989 m·s^(-1)),superficial liquid velocity(0.00332–0.02984 m·s^(-1)),and ionic strength(1.42456–1.59588 mol·kg^(-1)).And volumetric mass transfer coeffi-cients kLa and superficial reaction rates r of the MIR and the bubble column reactor are compared in the reaction of sodium carbonate absorption of carbon dioxide,and the former shows a greater improvement under different solution properties and operating parameters.The enhanced role of MIR in mass transfer in non-homogeneous reactions is verified and the feasibility of industrial practical applications of MIR is demonstrated.

关 键 词：Carbon dioxide ABSORPTION MICROBUBBLE Bubble Sauter mean diameter Interfacial area Mass transfer 

分 类 号：TQ03[化学工程]