An Unsteady Heterogeneous Mass Transfer Model for Gas Absorption Enhanced by Dispersed Third Phase Droplets

CIESC Journal ›› 2009, Vol. 17 ›› Issue (4): 602-607.

An Unsteady Heterogeneous Mass Transfer Model for Gas Absorption Enhanced by Dispersed Third Phase Droplets

沈树华, 马友光, 卢素敏, 朱春英

School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China

收稿日期:2008-11-12 修回日期:2009-03-11 出版日期:2009-08-28 发布日期:2010-12-30
通讯作者: MA Youguang, E-mail: ygma@tju.edu.cn
作者简介:
基金资助:
Supported by the National Natural Science Foundation of China(20176036)

An Unsteady Heterogeneous Mass Transfer Model for Gas Absorption Enhanced by Dispersed Third Phase Droplets

SHEN Shuhua, MA Youguang, LU Sumin, ZHU Chunying

School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin 300072, China

Received:2008-11-12 Revised:2009-03-11 Online:2009-08-28 Published:2010-12-30
Supported by:
Supported by the National Natural Science Foundation of China(20176036)

摘要/Abstract

摘要： A model for one-dimensional unsteady heterogeneous mass transfer was developed based on Danckwerts' surface renewal theory in order to describe the mass transfer enhancement of absorption process for a slightly soluble gas in a gas-liquid-liquid system.The model accounts for the mass transfer resistance within the dispersed phase and the effect of emulsion viscosity on mass transfer.An analytical solution for enhancement factor was obtained by Laplace domain transformation.The absorption rates of carbon dioxide in the dodecane-in-water and castor oil-in-water systems were measured in a thermostatic reactor,and the enhancement factors were calculated at different volume fractions of dispersed phase and stirrer speeds.The model predictions agree well with the experimental data.

关键词: enhancement factor, mass transfer, absorption, gas-liquid-liquid

Abstract: A model for one-dimensional unsteady heterogeneous mass transfer was developed based on Danckwerts' surface renewal theory in order to describe the mass transfer enhancement of absorption process for a slightly soluble gas in a gas-liquid-liquid system.The model accounts for the mass transfer resistance within the dispersed phase and the effect of emulsion viscosity on mass transfer.An analytical solution for enhancement factor was obtained by Laplace domain transformation.The absorption rates of carbon dioxide in the dodecane-in-water and castor oil-in-water systems were measured in a thermostatic reactor,and the enhancement factors were calculated at different volume fractions of dispersed phase and stirrer speeds.The model predictions agree well with the experimental data.

Key words: enhancement factor, mass transfer, absorption, gas-liquid-liquid

沈树华, 马友光, 卢素敏, 朱春英. An Unsteady Heterogeneous Mass Transfer Model for Gas Absorption Enhanced by Dispersed Third Phase Droplets[J]. CIESC Journal, 2009, 17(4): 602-607.

SHEN Shuhua, MA Youguang, LU Sumin, ZHU Chunying. An Unsteady Heterogeneous Mass Transfer Model for Gas Absorption Enhanced by Dispersed Third Phase Droplets[J]. , 2009, 17(4): 602-607.

参考文献

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An Unsteady Heterogeneous Mass Transfer Model for Gas Absorption Enhanced by Dispersed Third Phase Droplets

An Unsteady Heterogeneous Mass Transfer Model for Gas Absorption Enhanced by Dispersed Third Phase Droplets

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