A Study on Characteristics and Enhancement of Pervaporation-Membrane Separation Process

朱长乐; 刘茉娥; 徐伟; 季文长

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A Study on Characteristics and Enhancement of Pervaporation-Membrane Separation Process

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- A Study on Characteristics and Enhancement of Pervaporation-Membrane Separation Process
- CIESC Journal Issue 2, (1989)
- 作者机构：
  
  浙江大学化工系,浙江大学化工系,浙江大学化工系,浙江大学化工系 ,杭州,杭州,杭州,杭州
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Online First：25 April 1989，
  
  Published：25 April 1989
- 稿件说明：
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朱长乐, 刘茉娥, 徐伟, et al. A Study on Characteristics and Enhancement of Pervaporation-Membrane Separation Process[J]. CIESC Journal, 1989, (2).
DOI：

朱长乐, 刘茉娥, 徐伟, et al. A Study on Characteristics and Enhancement of Pervaporation-Membrane Separation Process[J]. CIESC Journal, 1989, (2). DOI：

摘要

本研究工作在几种试制的膜和实验基础上

对醇-水体系

特别是乙醇-水恒沸体系的渗透汽化-膜分离过程

作了过程特性和强化途径的分析研究.除了测定渗透流率和分离系数外

有效地测定了渗透组分在膜内的溶解度

计算了组分和膜之间相互作用参数;并测定了扩散系数

建立了包含伴生效应的多参数扩散模型;从而进一步分析和建立了修正的溶解一扩散模型.为工业应用提供科学依据和参考.

Abstract

In this work

the characteristics and enhancement of pervaporation for the separation of alcohol-water mixtures especially for ethanol-water azeotrope

have been demonstrated with several kinds of membranes such as CTA

PSf

PVAc/PSf

PAA-PAN/CA

etc. along with the investigation of a modified solution-diffusion model. In addition to the determination of separation factor and permeability

the effective direct determination of solubility of solute (or solvent) inside the membrane was carried out by a novel device coupled with GC-103. Meanwhile

the diffusivity was determined by a transient approach and pervaporation separately. A multicoefficient diffusion model was correlated. The results conform with the theoretical prediction and would provide the scientific basis for further industrial application.

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