萃取体系滴内和两相阻力控制的单液滴传质实验和数值模拟研究

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萃取体系滴内和两相阻力控制的单液滴传质实验和数值模拟研究

李天文^a; 毛在砂^a; 陈家镛^a; 费维扬^b

^a Institute of Process Engineering formerly Institute of Chemic.al Metallurgy, Chinese
Academy of Sciences, Beijing 100080, ChinaFEI WeiyangState Key United Laboratory of
Chemical Engineering, Tsinghua University, Beijing 100084, China
^b State Key United Laboratory of Chemical Engineering, Tsinghua University, Beijing 100084,
China

收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2002-02-28 发布日期:2002-02-28
通讯作者: 李天文

Experimental and Numerical Investigations of Single Drop Mass Transfer in Solvent
Extraction Systems with Resistance in Both Phases

LI Tianwen^a; MAO Zaisha^a; CHEN Jiayong^a; FEI Weiyang^b

^a Institute of Process Engineering formerly Institute of Chemic.al Metallurgy, Chinese
Academy of Sciences, Beijing 100080, ChinaFEI WeiyangState Key United Laboratory of
Chemical Engineering, Tsinghua University, Beijing 100084, China
^b State Key United Laboratory of Chemical Engineering, Tsinghua University, Beijing 100084,
China

Received:1900-01-01 Revised:1900-01-01 Online:2002-02-28 Published:2002-02-28
Contact: LI Tianwen

摘要/Abstract

摘要： Numerical simulation of transient mass transfer to a single drop controlled by the internal
resistance or by the resistance in both phases was mathematically formulated and simulated
in a boundary-fitted orthogonal coordinate system. The simulated results on the transient
mass transfer dominated by the internal resistance are in good agreement with the Newman
and Kronig-Brink models for drops with low Reynolds number. When the drop Reynolds number
is up to 200, the mass transfer coefficient from numerical simulation is very low as
compared with the Handlos-Baron model. The cases with mass transfer resistance residing in
both the continuous and drop phases were simulated successfully and compared with the
experimental data in three extraction systems recommended by European Confederation of
Chemical Engineering (EFCE). For single drops with Re ＜ 200, the numerically predicted
values of the extraction fraction and overall mass transfer coefficient are in reasonable
coincidence with the experimental data. It is concluded that the numerical simulation can
be resorted in some cases of solvent extraction for conducting numerical experiments and
parametric study. Nevertheless, for better resolution as higher Reynolds number drops are
simulated, more sophisticated techniques should be developed and incorporated to deal with
the large deformation and transient shape oscillation as well as possible Marangoni effect.

关键词: solvent extraction;single drop;numerical simulation;mass transfer experiment

Abstract: Numerical simulation of transient mass transfer to a single drop controlled by the internal
resistance or by the resistance in both phases was mathematically formulated and simulated
in a boundary-fitted orthogonal coordinate system. The simulated results on the transient
mass transfer dominated by the internal resistance are in good agreement with the Newman
and Kronig-Brink models for drops with low Reynolds number. When the drop Reynolds number
is up to 200, the mass transfer coefficient from numerical simulation is very low as
compared with the Handlos-Baron model. The cases with mass transfer resistance residing in
both the continuous and drop phases were simulated successfully and compared with the
experimental data in three extraction systems recommended by European Confederation of
Chemical Engineering (EFCE). For single drops with Re ＜ 200, the numerically predicted
values of the extraction fraction and overall mass transfer coefficient are in reasonable
coincidence with the experimental data. It is concluded that the numerical simulation can
be resorted in some cases of solvent extraction for conducting numerical experiments and
parametric study. Nevertheless, for better resolution as higher Reynolds number drops are
simulated, more sophisticated techniques should be developed and incorporated to deal with
the large deformation and transient shape oscillation as well as possible Marangoni effect.

Key words: solvent extraction, single drop, numerical simulation, mass transfer experiment

李天文, 毛在砂, 陈家镛, 费维扬. 萃取体系滴内和两相阻力控制的单液滴传质实验和数值模拟研究[J]. CIESC Journal.

LI Tianwen, MAO Zaisha, CHEN Jiayong, FEI Weiyang. Experimental and Numerical Investigations of Single Drop Mass Transfer in Solvent
Extraction Systems with Resistance in Both Phases[J]. .

参考文献

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萃取体系滴内和两相阻力控制的单液滴传质实验和数值模拟研究

Experimental and Numerical Investigations of Single Drop Mass Transfer in Solvent
Extraction Systems with Resistance in Both Phases

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萃取体系滴内和两相阻力控制的单液滴传质实验和数值模拟研究

Experimental and Numerical Investigations of Single Drop Mass Transfer in Solvent Extraction Systems with Resistance in Both Phases

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Experimental and Numerical Investigations of Single Drop Mass Transfer in Solvent
Extraction Systems with Resistance in Both Phases