文献类型：期刊文献

英文题名：CO2 absorption into highly concentrated DEA solution flowing over a vertical plate with rectangular windows

作者：Hu, Jianguang[1];Liu, Jiate[1];Yu, Jianguo[1];Dai, Gance[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2013

卷号：19

起止页码：13

外文期刊名：INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL

收录：;EI(收录号：20133816765543);WOS:【SCI-EXPANDED(收录号:WOS:000330491400003)】；

语种：英文

外文关键词：CO2 capture; DEA solution; Absorption process; Plate with windows

摘要：A novel element for gas-liquid contact, the plate with rectangular windows was proposed to enhance CO2 absorption into aqueous diethanolamine(DEA) solutions with high concentration. Absorption experiments were performed within the following test range: the mass fraction of DEA from 5% to 63%, viscosity from 1.1 mPa s to 25.3 mPa s, liquid load from 30 m(3) m(-2) h(-1) to 60 m(3) m(-2) h(-1) and volume fraction of CO2 from 15% to 45%. The results show that the normal plate reaches the maximum absorption efficiency when the DEA content is 40 wt% (the corresponding viscosity is 5.8 mPa s), and the liquid-side mass transfer coefficient K-L decreases as the viscosity of solution further increases, even increasing liquid load K-L is not enhanced obviously. Comparing of the two types of plate, when DEA(wt%)<= 40% (mu <= 5.8 mPa s), K-L of the plate with windows has increased by 30-40% over the normal one, and when DEA(wt%) >40% (mu >5.8 mPa s), K-L could be increased by 60-70%, even 100%. Furthermore, the mass transfer strengthening mechanism of the plate with windows was also discussed. (C) 2013 Elsevier Ltd. All rights reserved.