Pervaporation dehydration of ethylene glycol by NaA zeolite membranes

被引：40

作者：

Yu, Congli ^{[1
]}

Zhong, Chao ^{[1
]}

Liu, Yanmei ^{[1
]}

Gu, Xuehong ^{[1
]}

Yang, Gang ^{[1
]}

Xing, Weihong ^{[1
]}

Xu, Nanping ^{[1
]}

机构：

[1] Nanjing Univ Technol, Coll Chem & Chem Engn, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Peoples R China

来源：

CHEMICAL ENGINEERING RESEARCH & DESIGN | 2012年 / 90卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Ethylene glycol; NaA zeolite membranes; Pervaporation; Dehydration; MICROPOROUS SILICA; LIQUID-MIXTURES; BINARY-LIQUIDS; SEPARATION; WATER; DISTILLATION; MECHANISM; TRANSPORT; SOLVENTS;

D O I：

10.1016/j.cherd.2011.12.003

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Home-made NaA zeolite membranes were used for pervaporation dehydration of ethylene glycol (EG)/water mixtures. Hydrothermal stability of the membranes in pervaporation was investigated for industrial application purpose. The membranes exhibited good stability for water content of less than 20 wt.% at 100 B.VC. The reduction of operating temperature was effective to improve membrane stability for operating at high feed water content (e.g. 30 wt.%). The influence of feed water content and operating temperature on dehydration of EG was extensively investigated. A permeation flux of 4.03 kg m(-2) h(-1) with separation factor of >5000 was achieved at 120 degrees C for the separation of the solution with 20 wt.% water content. A pilot-scale pervaporation facility with membrane area of 3m(2) was built up for dehydration of EG with the water content of 20 wt.%, which showed technical feasibility for industrial application. (C) 2011 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.

引用

页码：1372 / 1380

页数：9

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