OVERALL PLATE EFFICIENCY OF THREE-PHASE DISTILLATION IN SIEVE TRAY COLUMN

Jiang Zhouliang; Shi Jifen and Fu Jufu(Beijing institute of Chemical Engineering; Beijing 100029)

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OVERALL PLATE EFFICIENCY OF THREE-PHASE DISTILLATION IN SIEVE TRAY COLUMN

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- OVERALL PLATE EFFICIENCY OF THREE-PHASE DISTILLATION IN SIEVE TRAY COLUMN
- CIESC Journal Issue 3, (1993)
- 作者机构：
  
  北京化工学院化学工程系,北京化工学院化学工程系,北京化工学院化学工程系北京100029,北京100029,北京,100029
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 June 1993，
  
  Published：25 June 1993
- 稿件说明：
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Jiang Zhouliang, Shi Jifen and Fu Jufu(Beijing institute of Chemical Engineering, Beijing 100029). OVERALL PLATE EFFICIENCY OF THREE-PHASE DISTILLATION IN SIEVE TRAY COLUMN[J]. CIESC Journal, 1993, (3).
DOI：

Jiang Zhouliang, Shi Jifen and Fu Jufu(Beijing institute of Chemical Engineering, Beijing 100029). OVERALL PLATE EFFICIENCY OF THREE-PHASE DISTILLATION IN SIEVE TRAY COLUMN[J]. CIESC Journal, 1993, (3). DOI：

摘要

在Oldershaw精馏塔内

对汽液液三相精馏筛型塔板上的传质特性进行测试

研究了泡沫工况下

汽速、液汽比等操作条件

表面张力梯度、界面张力、乳化液分散粘度等物系性质

以及油水体积比等多种参数对总板效率的影响、对测试数据进行关联

获得了适用于泡沫工况下汽液液三相精馏过程的总板效率估算式

此关联式对设备设计及操作优化有一定的参考价值.

Abstract

The overall plate efficiency of vapor-liquid-liquid three-phase distillation was investigated in a sieve-tray Oldershaw distillation column of 50mm diameter . In froth flowregime

the effects on mass transfer of the operating conditions

e.g. vapor velocity and liquid to vapor loading ratio

and the physical properties of liquid phase

including surface tension

interfacial tension

dispersion viscosity

density

diffusion coefficient

relative volatility etc.

were systematically studied . The influence of the oil to water volume ratio on overall efficiency was also investigaed . Three-phase and two-phase distillation operations were compared in terms of plate efficiency . An analysis of the experimental results showed that the overall efficiency for three-phase distillation was lower than that for two-p hase distillation and interfacial tension and dispersion viscosity are the main influence factors . Finally

a correlation equation of overall efficiency for vapor-liquid-liquid three-pha se distillation in froth regime was obtained by regression of experimental data . This empirical correlation may be of some value in design and optimization .

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