SCI和EI收录∣中国化工学会会刊

›› 2012, Vol. 20 ›› Issue (1): 111-119.

• • 上一篇    下一篇

Process Characteristics of CO2 Absorption by Aqueous Monoethanolamine in a Microchannel Reactor

叶春波1,2, 陈光文1, 袁权1   

  1. 1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
    2. Graduate School, Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2010-05-18 修回日期:2010-11-10 出版日期:2012-02-28 发布日期:2012-05-03
  • 通讯作者: CHEN Guangwen,E-mail:gwchen@dicp.ac.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China (20911130358);the Ministry of Science and Technology of China (2009CB219903);the Fund of Dalian Institute of Chemical Physics,CAS (K2009D01)

Process Characteristics of CO2 Absorption by Aqueous Monoethanolamine in a Microchannel Reactor

YE Chunbo1,2, CHEN Guangwen1, YUAN Quan1   

  1. 1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China;
    2. Graduate School, Chinese Academy of Sciences, Beijing 100049, China
  • Received:2010-05-18 Revised:2010-11-10 Online:2012-02-28 Published:2012-05-03
  • Supported by:
    Supported by the National Natural Science Foundation of China (20911130358);the Ministry of Science and Technology of China (2009CB219903);the Fund of Dalian Institute of Chemical Physics,CAS (K2009D01)

摘要: Process characteristics of CO2 absorption using aqueous monoethanolamine(MEA) in a microchannel reactor were investigated experimentally in this work.A T-type rectangular microchannel with a hydraulic diameter of 408 μm was used.Operating parameters,i.e.temperature,pressure and molar ratio of MEA to CO2 were studied.Under 3 MPa pressure,the mole fraction of CO2 in gas phase could decrease from 32.3% to 300×10-6 at least when gas hourly space velocity ranged from 14400 to 68600 h-1 and molar ratio of MEA to CO2 was kept at 2.2.In particular,the effects of temperature on CO2 absorption flux,mass transfer driving force,gas-liquid contact time and enhancement factor were analyzed in detail and found that mass transfer enhancement by chemical reaction was a crucial factor for the process of CO2 absorption.

关键词: miniaturization, microchannel, microfluidic, carbon dioxide, absorption, monoethanolamine

Abstract: Process characteristics of CO2 absorption using aqueous monoethanolamine(MEA) in a microchannel reactor were investigated experimentally in this work.A T-type rectangular microchannel with a hydraulic diameter of 408 μm was used.Operating parameters,i.e.temperature,pressure and molar ratio of MEA to CO2 were studied.Under 3 MPa pressure,the mole fraction of CO2 in gas phase could decrease from 32.3% to 300×10-6 at least when gas hourly space velocity ranged from 14400 to 68600 h-1 and molar ratio of MEA to CO2 was kept at 2.2.In particular,the effects of temperature on CO2 absorption flux,mass transfer driving force,gas-liquid contact time and enhancement factor were analyzed in detail and found that mass transfer enhancement by chemical reaction was a crucial factor for the process of CO2 absorption.

Key words: miniaturization, microchannel, microfluidic, carbon dioxide, absorption, monoethanolamine

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