Effect of Surface Tension Gradients on The Performance of Packed Distillation Columns

Fan Wenyuan and Zha Fufang(Chemical Engineering Department; Hefei Polytechnic University)

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Effect of Surface Tension Gradients on The Performance of Packed Distillation Columns

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- Effect of Surface Tension Gradients on The Performance of Packed Distillation Columns
- CIESC Journal Issue 3, (1987)
- 作者机构：
  
  合肥工业大学化工系,合肥工业大学化工系
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 September 1987，
  
  Published：25 September 1987
- 稿件说明：
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Fan Wenyuan and Zha Fufang(Chemical Engineering Department, Hefei Polytechnic University). Effect of Surface Tension Gradients on The Performance of Packed Distillation Columns[J]. CIESC Journal, 1987, (3).
DOI：

Fan Wenyuan and Zha Fufang(Chemical Engineering Department, Hefei Polytechnic University). Effect of Surface Tension Gradients on The Performance of Packed Distillation Columns[J]. CIESC Journal, 1987, (3). DOI：

摘要

通过实验研究和比较了表面张力梯度对三种类型的塔填料传质性能的影响.结果表明

表面张力梯度对不同类型的塔填料传质性能都有显著的影响

但影响的程度是不同的.从理论上对填料表面的润湿性受表面张力梯度的影响进行了探讨

导出了一个反映这种影响的新Marangoni准数

St=(ρμM~3/gd_p~5L~5)~(0.2)

并确定出St与润湿面积之间的关系.

Abstract

Experiments are conducted to reveal and compare the effects of surface tension gradients on the mass transfer performance of columns packed re -spectively with three types of packing materials. The results obtained show that surface tension gradients have evident influence on the three types of packings

though in different extents. Theoretical studies of the effect of surface tension gradients on the wetted area of packing

leads to a new Ma-rangoni number

i. e. which may serve to explain the influence of surface tension gradients. The relationship between the wetted area and St has also been determined quantitatively.

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