Liquid Side Mass Transfer Coefficients of Three Tower Packings Perforated Ring

Li Xi-yuan; Tan Qiu and Li A-naChemical Engineering Department; Tianjin University

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Liquid Side Mass Transfer Coefficients of Three Tower Packings Perforated Ring

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- Liquid Side Mass Transfer Coefficients of Three Tower Packings Perforated Ring
- CIESC Journal Issue 4, (1980)
- 作者机构：
  
  天津大学化工系,天津大学化工系,天津大学化工系
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 December 1980，
  
  Published：25 December 1980
- 稿件说明：
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Li Xi-yuan, Tan Qiu and Li A-naChemical Engineering Department, Tianjin University. Liquid Side Mass Transfer Coefficients of Three Tower Packings Perforated Ring[J]. CIESC Journal, 1980, (4).
DOI：

Li Xi-yuan, Tan Qiu and Li A-naChemical Engineering Department, Tianjin University. Liquid Side Mass Transfer Coefficients of Three Tower Packings Perforated Ring[J]. CIESC Journal, 1980, (4). DOI：

摘要

本文介绍了在φ600mm的实验装置内

对Dg50mm聚丙烯鲍尔环（井）、聚丙烯鲍尔环（米）、聚丙烯阶梯环（Ⅰ）填料

用空气脱吸CO_2水溶液

测得的传质性能数据

并用此数据对液膜传质系数的不同关联方法进行了核算、对比。认为:恩田等所提出的计算液膜传质系数的关联式

在计算新型开孔环形填料时偏差较大

主要是由于他们所提出的形状系数a_td_p

未能反映这些新型填料的形状特征对其传质性能的影响。本文用形状修正系数ψ来代替a_td_p

这样恩田等的计算液膜传质系数的关联式

其应用范围被扩展到新型开孔环类型填料的范围。采用新的形状修正系数ψ后

液膜传质系数的计算式改写为 k_L(ρ_L/μ_(Lg))~1/3=0.0095(L_G/a_ωμ_L)~2/3(μ_L/ρ_LD_L）~(-1/2)ψ~0.4对各种不同类型填料其形状修正系数值为本式可适用于Dg50mm以下的上述各类填料的计算。

Abstract

CO2 gas was stripped from its water solution with

air in a 600 mm experimental tower filled alternately with 50mm Pall ring (having # shapped ribs)

50 mm Pall ring (having * shapped ribs) and cascade mini-ring (type I) all made of polypropylene. Liquid side mass transfer coefficients were measured and compared with those calculated from different correlations. It is found that the equations offered by Ondas et al. give moderately deviated values in comparison with the results of present investigation. It seems that Ondas shap factor atdp does not represent thoroughly the effect of shape characteristics of these new types of packings to liquid side mass transfer coefficients. A modified shape factor is proposed to replace the old one in Ondas correlation. After this modification

the application range of Ondas equation is expanded to include perforated rings (e. g. Pall ring

cascade mini-ring) as well. The new equation for calculating liquid side mass transfer coefficient becomes. The modified shape factors for various types of packings are. This equation is suited for various types of packings given above of nominal size below 50 mm.

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