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

被引:1
作者
Shen, Hu [1 ]
Xu, Yingyu [1 ]
An, Jigang [1 ]
Jiang, Bowen [1 ]
Sun, Jinnan [1 ]
Yang, Guoqiang [1 ]
Zhang, Zhibing [1 ]
机构
[1] Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem, Minist Educ MOE, Nanjing 210023, Peoples R China
来源
CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2023年 / 64卷
关键词
Carbon dioxide; Absorption; Microbubble; Bubble Sauter mean diameter; Interfacial area; Mass transfer; GAS HOLDUP; BUBBLE-COLUMN; ADSORPTION; TRANSITION; SEPARATION; ADSORBENT; FRAMEWORK; REMOVAL; SYSTEM; ENERGY;
D O I
10.1016/j.cjche.2023.06.003
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Micro-interface intensified reactor (MIR) can be applied in series/parallel in the absorption of CO2 in industrial gases by Na2CO3 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 Na2CO3 solution under the influence of different solution properties and operating parameters in the reaction of CO2 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 center dot L 1), superficial gas velocity (0.00221-0.01989 m center dot s 1), superficial liquid velocity (0.00332- 0.02984 m center dot s 1), and ionic strength (1.42456-1.59588 mol center dot kg 1). And volumetric mass transfer coefficients 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. (c) 2023 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
引用
收藏
页码:208 / 223
页数:16
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