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《中国化学工程学报(英文版)》 2012-01
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Process Characteristics of CO2 Absorption by Aqueous Monoethanolamine in a Microchannel Reactor

YE Chunbo 1,2,CHEN Guangwen 1,** and YUAN Quan 1 1 Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China 2 Graduate School,Chinese Academy of Sciences,Beijing 100049,China  
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 en-hancement factor were analyzed in detail and found that mass transfer enhancement by chemical reaction was a crucial factor for the process of CO2 absorption.
【Fund】: 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)
【CateGory Index】: X701
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