| 液滴凝并端效应对单液滴传质测定的影响及消除 |
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| 引用本文： | 李天文,毛在砂,陈家镛. 液滴凝并端效应对单液滴传质测定的影响及消除[J]. 中国化学工程学报, 2001, 9(2): 204-207 |
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| 作者姓名： | 李天文 毛在砂 陈家镛 |
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| 作者单位： | [1]TechnicalCenterofLTHNaturalGasChemical（Group）Co.,Luzhou646300,China [2]InstituteofChemicalMetallurgy,ChineseAcademyofSciences,Beijing100080,China [3]StateKeyUnitedLaboratoryofChemicalEngineering,TsinghuaUniversity,Beijing100084,China |
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| 基金项目： | the National Natural Science Foundation of China (No. 29792074, No. 29836130) and SINOPEC. |
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| 摘 要： | For the mass transfer to single drops during the stage of steady buoyancy-driven motion, experimental measurement is complicated with the terminal effect of additional mass transfer during drop formation and coalescence at the drop collector. Analysis reveals that consistent operating conditions and experimental procedure are of critical significance for minimizing the terminal effect of drop coalescence on the accuracy of mass transfer The novel design of a totally-closed extraction column is proposed for this purpose, which guarantees that the volumetric rate of drop phase injection is exactly equal to that of withdrawal of drops. Tests in two extraction systems demonstrate that the experimental repeatability is improved greatly and the terminal effect of mass transfer during drop coalescence is brought well under control.
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| 关 键 词： | 液滴凝 并端效应 单液滴 传质 测定 影响 消除方法 溶剂萃取 |
| 修稿时间： | |
Terminal Effect of Drop Coalescence on Single Drop Mass Transfer Measurements and Its Minimization |
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| LI Tianwen,Mao Zaisha,Chen Jiayong,Fei Weiyang. Terminal Effect of Drop Coalescence on Single Drop Mass Transfer Measurements and Its Minimization[J]. Chinese Journal of Chemical Engineering, 2001, 9(2): 204-207 |
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| Authors: | LI Tianwen Mao Zaisha Chen Jiayong Fei Weiyang |
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| Affiliation: | Institute of Chemical Metallurgy, Chinese Academy of Sciences, Beijing 100080, China State Key United Laboratory of Chemical Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | For the mass transfer to single drops during the stage of steady buoyancy-driven motion, experimental measurement is complicated with the terminal effect of additional mass transfer during drop formation and coalescence at the drop collector. Analysis reveals that consistent operating conditions and experimental procedure are of critical significance for minimizing the terminal effect of drop coalescence on the accuracy of mass transfer measurements. The novel design of a totally-closed extraction column is proposed for this purpose, which guarantees that the volumetric rate of drop phase injection is exactly equal to that of withdrawal of drops. Tests in two extraction systems demonstrate that the experimental repeatability is improved greatly and the terminal effect of mass transfer during drop coalescence is brought well under control. |
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| Keywords: | solvent extraction mass transfer single drop terminal effect drop coalescence |
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