Comparative mass transfer performance of CO2 absorption using highly-concentrated AMP-PZ-MEA ternary amines solvent

被引：1
|
作者：
Nakrak S. [1 ]
Chalermsinsuwan B. [1 ,2 ]
Tontiwachwuthikul P. [3 ]
Gao H. [4 ]
Liang Z. [4 ]
Sema T. [1 ,2 ]
机构：
[1] Department of Chemical Technology, Faculty of Science, Chulalongkorn University, Bangkok, Pathumwan
[2] Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, PathumwanBangkok
[3] Clean Energy Technologies Research Institute, Faculty of Engineering and Applied Science, University of Regina, , S4S 0A2, SK
[4] , Capture and Storage (iCCS), Emissions, College of Chemistry and Chemical Engineering, Hunan University, Changsha
来源：
Energy Reports | 2023年 / 9卷
关键词：
Amine; CO[!sub]2[!/sub] absorption; Mass transfer; Packed column; Ternary solvent;
D O I：
10.1016/j.egyr.2023.05.219
中图分类号：
学科分类号：
摘要：
Mass transfer performance of CO2 absorption is based on selecting an effective amine solvent, hence, an examination of the overall mass transfer coefficient (KGav) and CO2 removal efficiency, is significant for obtaining the most favorable CO2 capture performance. This study compared KGav and CO2 removal efficiency of the highly concentrated ternary amines solvent at various concentrations with the benchmark monoethanolamine (MEA) in a laboratory scale CO2 absorption packed-column. The six blends of 2-amino-2-methyl-1-propanol (AMP), piperazine (PZ), and MEA are formulated as ternary solvents at high PZ/AMP molar ratio (1.25–3.75) and total amine concentration (6M and 7M). Be noted that the solvent precipitation was not observed in this study. The absorption experiment was operated at 303 K temperature, 12% CO2 by volume, and CO2 loading of 0.25 mol CO2/mol amine. The experimental results showed that KGav and CO2 removal efficiency for AMP-PZ-MEA and MEA solvents increased as total amine concentration increased. Also, KGav and CO2 removal efficiency of the PZ-AMP-MEA solvent are greater than those of 5M MEA. An increase of PZ/AMP molar ratio had a positive influence on the absorption performance for ternary amines. In comparison with the benchmark 5M MEA, all the studied AMP-PZ-MEA solvents showed an outperformance. The two suggested formulae, which are 0.95:3.55:1.5 (6M) and 0.95:3.55:2.5 (7M), possessed approximately 1.5 and 2.5 times higher KGav and 17.34% and 17.63% greater CO2 removal efficiency compared with the benchmark 5M MEA. © 2023 The Author(s)
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页码：1 / 7
页数：6
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