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

被引：8

作者：

Shen Shuhua ^{[1
]}

Ma Youguang ^{[1
]}

Lu Sumin ^{[1
]}

Zhu Chunying ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, State Key Lab Chem Engn, Tianjin 300072, Peoples R China

来源：

CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2009年 / 17卷 / 04期

基金：

中国国家自然科学基金;

关键词：

enhancement factor; mass transfer; absorption; gas-liquid-liquid; LIQUID-LIQUID DISPERSIONS; FINE CATALYST PARTICLES; PHYSICAL ABSORPTION; MULTIPHASE SYSTEMS; SLURRY REACTORS; WATER; CARBON; MECHANISM; PROPANE; BUBBLES;

D O I：

10.1016/S1004-9541(08)60250-5

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

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.

引用

页码：602 / 607

页数：6

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