THREE-DIMENSIONAL SIMULATION OF DISTILLATION COLUMN CONTAINING STRUCTURED PACKING（Ⅱ）VALIDATION OF MODEL AND THE EFFECT OF LIQUID DISTRIBUTION AND MIXING BEHAVIOR ON DISTILLATION

Sun Shuyu; Zeng Aiwu; Wang Shuying; Yu Guocong(K.T.Yu）（Chemical Engineering Research Center

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THREE-DIMENSIONAL SIMULATION OF DISTILLATION COLUMN CONTAINING STRUCTURED PACKING（Ⅱ）VALIDATION OF MODEL AND THE EFFECT OF LIQUID DISTRIBUTION AND MIXING BEHAVIOR ON DISTILLATION

更新时间：2025-12-16

- THREE-DIMENSIONAL SIMULATION OF DISTILLATION COLUMN CONTAINING STRUCTURED PACKING（Ⅱ）VALIDATION OF MODEL AND THE EFFECT OF LIQUID DISTRIBUTION AND MIXING BEHAVIOR ON DISTILLATION
- CIESC Journal Issue 5, (1998)
- 作者机构：
  
  天津大学化学工程研究所!天津300072,天津大学化学工程研究所!天津300072,天津大学化学工程研究所!天津300072,天津大学化学工程研究所,天津,300072
- 作者简介：
- 基金信息：
- DOI：
  CLC： Q02
- Online First：25 October 1998，
  
  Published：25 October 1998
- 稿件说明：
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Sun Shuyu, Zeng Aiwu, Wang Shuying, et al. THREE-DIMENSIONAL SIMULATION OF DISTILLATION COLUMN CONTAINING STRUCTURED PACKING（Ⅱ）VALIDATION OF MODEL AND THE EFFECT OF LIQUID DISTRIBUTION AND MIXING BEHAVIOR ON DISTILLATION[J]. CIESC Journal, 1998, (5).
DOI：

Sun Shuyu, Zeng Aiwu, Wang Shuying, et al. THREE-DIMENSIONAL SIMULATION OF DISTILLATION COLUMN CONTAINING STRUCTURED PACKING（Ⅱ）VALIDATION OF MODEL AND THE EFFECT OF LIQUID DISTRIBUTION AND MIXING BEHAVIOR ON DISTILLATION[J]. CIESC Journal, 1998, (5). DOI：

摘要

用简化三维混合池模型对Gorak所做精馏实验作了实例计算。模型的计算结果与Gorak实验数据符合良好，以简化三维混合池模型为工具，用数值计算的方法研究了规整填料塔中液体流动分布和混合对精馏过程的影响。结果表明：液相轴向返混对精馏有着显著的不利影响；当液体流动分布为严重壁流分布（严重沟流分布）时，必须用三维模型描述才不会产生较大偏差；横向混合系数的增大有利于填料塔分离效率的提高，但不能完全抵消液相严重不均匀分布对精馏过程的不利影响。

Abstract

The distillation experiment performed by Gorak was simulated with sufficient accuracy by using the simplified three-dimensional mixing-pool model.The effect of liquid distribution and mixing behavior on distillation column containing structured packing was studied by numerical method with the simplified three-dimensional mixing-pool model.It was found that the axial backmixing of liquid phase has a pronounced negative effect on separation.The three-dimensional model should be used for simulating the cases of serious wall flow and/or serious channeling flow.Lateral mixing is favorable to the separation

but for the corrugated sheet structured packing

the loss of separation efficiency due to nonunifom liquid distribution cannot be completely compensated

even with infinite lateral mixing along the extending direction of packing sheet.

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