2-STAGE MEMBRANE SEPARATION WITH CARRIER GAS FOR ETHANOL WATER MIXTURES USING SILICONE-RUBBER AND POLYIMIDE HOLLOW FIBERS

被引：1

作者：

ITO, A ^{[1
]}

FUJII, M ^{[1
]}

HARADA, T ^{[1
]}

机构：

[1] UBE IND LTD,CORP RES & DEV,CHIBA 290,JAPAN

来源：

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN | 1990年 / 23卷 / 02期

关键词：

Ethanol-Water; Gas Membrane Separation; Membrane Separation; Mixture; Pervaporation; Polyimide Membrane; Silicone Rubber Membrane;

D O I：

10.1252/jcej.23.175

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A two-stage membrane separation process composed of one step using a silicone rubber membrane hollow-fiber module and another step using a polyimide hollow-fiber module for effective separation of alcohol from a low-concentration alcohol-water solution was proposed and its effectiveness was experimentally confirmed. The first step is a pervaporation through the silicone rubber into a carrier gas, and the second is a gas-phase separation through the polyimide membrane. By use of these two steps in series, 99% and 1% solutions were separated from 5–10 mol% ethanol solution. This effective separation must be due to the high permeation rate of water vapor through the polyimide membrane, 200-fold that of ethanol vapor as shown by the experimental data. © 1990, The Society of Chemical Engineers, Japan. All rights reserved.

引用

页码：175 / 179

页数：5

共 48 条

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