| 第三分散相液滴增强气体吸收的一维非稳态非均相传质模型 |
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| 引用本文： | 沈树华,马友光,卢素敏,朱春英.第三分散相液滴增强气体吸收的一维非稳态非均相传质模型[J].中国化学工程学报,2009,17(4):602-607. |
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| 作者姓名： | 沈树华 马友光 卢素敏 朱春英 |
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| 作者单位： | School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin Univer-sity, Tianjin 300072, China |
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| 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 experi-mental data.
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| 关 键 词： | enhancement factor mass transfer absorption gas-liquid-liquid |
| 收稿时间： | 2008-11-12 |
| 修稿时间： | 2009-3-11
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An Unsteady Heterogeneous Mass Transfer Model for Gas Absorption Enhanced by Dispersed Third Phase Droplets |
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| SHEN Shuhua,MA Youguang,LU Sumin,ZHU Chunying.An Unsteady Heterogeneous Mass Transfer Model for Gas Absorption Enhanced by Dispersed Third Phase Droplets[J].Chinese Journal of Chemical Engineering,2009,17(4):602-607. |
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| Authors: | SHEN Shuhua MA Youguang LU Sumin ZHU Chunying |
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| Affiliation: | School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin Univer-sity, Tianjin 300072, China |
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| Abstract: | A model for one-dimensional unsteady heterogeneous mass transfer was developed based on Danck-werts' 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 ob-tained by Laplace domain transformation. The absorption rates of carbon dioxide in the dodecane-in-water and cas-tor 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 experi-mental data. |
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| Keywords: | enhancement factor mass transfer absorption gas-liquid-liquid |
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