CFD SIMULATION OF DISTILLATION TRAY BASED ON THREE DIMENSIONAL TWO-LAYER MODEL

LI Rui; XU Chunjian; ZENG Aiwu; ZHOU Ming

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CFD SIMULATION OF DISTILLATION TRAY BASED ON THREE DIMENSIONAL TWO-LAYER MODEL

更新时间：2025-12-10

- CFD SIMULATION OF DISTILLATION TRAY BASED ON THREE DIMENSIONAL TWO-LAYER MODEL
- CIESC Journal Issue 2, Pages: 159-163(2003)
- 作者机构：
  
  天津大学化学工程研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 February 2003，
  
  Published：25 February 2003
- 稿件说明：
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LI Rui, XU Chunjian, ZENG Aiwu, et al. CFD SIMULATION OF DISTILLATION TRAY BASED ON THREE DIMENSIONAL TWO-LAYER MODEL[J]. CIESC Journal, 2003, (2): 159-163.
DOI：

LI Rui, XU Chunjian, ZENG Aiwu, et al. CFD SIMULATION OF DISTILLATION TRAY BASED ON THREE DIMENSIONAL TWO-LAYER MODEL[J]. CIESC Journal, 2003, (2): 159-163. DOI：

摘要

在充分研究塔板上气液两相之间相互作用的基础上，运用双流体层三维模型，根据气体存在的形态将在泡沫工况下的液层在液体的厚度方向上分为喷射层和鼓泡层，将其特征与计算流体力学（CFD）结合起来，得到和实验观察比较一致的结果.

Abstract

Distillation is the most widely used for unit operation separation in chemical and petrochemical industries but the prediction of tray efficiency remains a difficult task because of the complexity of hydrodynamics on the tray.In this paper

a three dimensional computational fluid dynamics(CFD)model is developed for describing the hydrodynamics on a sieve tray——Two-Layer Model

in which essential features of sieve tray are fully considered.On a sieve tray working under the foaming condition

two layers of liquid considered are jetting layer which is near the tray bottom resulting from high velocity gas phase emerging from the gas holes

and bubble layer——the upper layer in which gas exists in the form of gas bubbles resulting from the break-up of gas column due to much loss of gas energy.The two-equation k-ε turbulent model is used respectively to the two layers in modeling process considering the different types of interaction between phases.A sieve tray of 1.2 m in diameter is simulated

the results of calculation are reasonable.The calculation is carried out with commercial software Fluent 5.4 of Fluent Inc.

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