On the effect of inert gases in breaking the formic acid-water azeotrope by gas-gap membrane distillation

被引：21

作者：

Banat, FA ^{[1
]}

Abu Al-Rub, F ^{[1
]}

Jumah, R ^{[1
]}

Shannag, M ^{[1
]}

机构：

[1] Jordan Univ Sci & Technol, Dept Chem Engn, Irbid 22110, Jordan

来源：

CHEMICAL ENGINEERING JOURNAL | 1999年 / 73卷 / 01期

关键词：

membrane distillation; diffusion; formic acid; azeotropes; Stefan-Maxwell;

D O I：

10.1016/S1385-8947(99)00014-5

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The effect of inert gases, such as helium, air, and sulfur hexafluoride, in breaking the formic acid-water azeotrope by gas-gap membrane distillation process is theoretically investigated under the process relevant operating conditions. A Stefan-Maxwell-based mathematical model that includes all necessary vapor-liquid equilibrium, heat, and mass relations is used for this purpose. According to the model predictions, heavy inert gases such as sulfur hexafluoride help more in breaking the azeotrope than Lighter ones such as air and helium. This phenomenal behavior is discussed along with the effect of other associated process parameters. (C) 1999 Published by Elsevier Science S.A. All rights reserved.

引用

页码：37 / 42

页数：6

共 16 条

[1]

Abu Al-Rub F, 1994, THESIS U IOWA

[2]

[Anonymous], 1977, VAPOR LIQUID EQUILIB

[3] Removal of benzene traces from contaminated water by vacuum membrane distillation [J].

Banat, FA ;

Simandl, J .

CHEMICAL ENGINEERING SCIENCE, 1996, 51 (08) :1257-1265

[4] Desalination by membrane distillation: A parametric study [J].

Banat, FA ;

Simandl, J .

SEPARATION SCIENCE AND TECHNOLOGY, 1998, 33 (02) :201-226

[5]

BENEDICT M, 1951, CHEM ENG PROG, V47, P51

[6]

CHICHELLI M, 1951, CHEM ENG PROG, V47, P63

[7] DIFFUSION DISTILLATION - A NEW SEPARATION PROCESS FOR AZEOTROPIC MIXTURES .1. SELECTIVITY AND TRANSFER EFFICIENCY [J].

FULLARTON, D ;

SCHLUNDER, EU .

CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION, 1986, 20 (05) :255-263

[8] A NEW METHOD FOR PREDICTION OF BINARY GAS-PHASE DIFFUSION COEFFECIENTS [J].

FULLER, EN ;

SCHETTLE, PD ;

GIDDINGS, JC .

INDUSTRIAL AND ENGINEERING CHEMISTRY, 1966, 58 (05) :19-+

[9]

GOODING H, 1985, CHEM ENG COMMUN, V35, P267

[10] SEPARATION OF LIQUID-MIXTURES BY MEMBRANE DISTILLATION [J].

GOSTOLI, C ;

SARTI, GC .

JOURNAL OF MEMBRANE SCIENCE, 1989, 41 :211-224

← 1 2 →