Ultrasonic Enhancement of CO2 Desorption from MDEA Solution in Microchannels

被引：26

作者：

Liu, Hongchen ^{[1
,2
]}

Zhao, Shuainan ^{[1
,2
]}

Zhou, Feng ^{[1
,2
]}

Yao, Chaoqun ^{[1
]}

Chen, Guangwen ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2019年 / 58卷 / 04期

基金：

中国国家自然科学基金;

关键词：

GAS-LIQUID FLOW; CARBON-DIOXIDE; MASS-TRANSFER; CAVITATION; SEPARATION; KINETICS; EMULSIFICATION; HYDRODYNAMICS; TECHNOLOGY; ABSORPTION;

D O I：

10.1021/acs.iecr.8b06050

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The enhancement of CO2 desorption from N-methyldiethanolamine (MDEA) rich solution was investigated in ultrasonic microreactors. Under ultrasound irradiation, the rate of bubble growth increased significantly due to rectified diffusion and bubble coalescence. The measured CO2 desorption rate was found to be obviously enhanced by ultrasound, being almost doubled at low temperature. The effects of various parameters on the enhancing effect of ultrasound were also investigated, including desorption temperature, solution flow rate, CO2 loading, MDEA concentration, microchannel length and capillary diameter. The results indicated that ultrasound was more suitable to intensify the CO2 desorption process at low temperature, by virtue of which the regeneration energy consumption and solvent loss could be efficiently reduced.

引用

页码：1711 / 1719

页数：9

共 37 条

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