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

摘要/Abstract

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

中图分类号:

X701

叶春波, 陈光文, 袁权. Process Characteristics of CO₂ Absorption by Aqueous Monoethanolamine in a Microchannel Reactor[J]. , 2012, 20(1): 111-119.

YE Chunbo, CHEN Guangwen, YUAN Quan. Process Characteristics of CO₂ Absorption by Aqueous Monoethanolamine in a Microchannel Reactor[J]. , 2012, 20(1): 111-119.

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

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

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