The effect of air sparging on the electrical resolution of water-in-oil emulsions

被引：13

作者：

Bailes, PJ ^{[1
]}

Kuipa, PK

机构：

[1] Univ Bradford, Dept Chem Engn, Bradford BD7 1DP, W Yorkshire, England

[2] Natl Univ Sci & Technol, Dept Chem Engn, Bulawayo, Zimbabwe

来源：

CHEMICAL ENGINEERING SCIENCE | 2001年 / 56卷 / 21-22期

基金：

英国工程与自然科学研究理事会;

关键词：

air sparging; emulsion breaking; coalescence; electric field; surfactant;

D O I：

10.1016/S0009-2509(01)00277-9

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A novel process is described in which the resolution of a stable water-in-oil emulsion is augmented by the simultaneous use of pulsed DC electric fields and mild bubbling of the emulsion with air. The work has indicated that there is a synergistic effect of air sparging on demulsification in the electric field and that the maximum emulsion resolution requires the voltage to be pulsed with optimum frequency. Emulsion resolution was found to increase steadily with increasing air flow rate until a maximum value is reached after which the extent of phase separation starts to fall rapidly with further increase in the air flow rate. The electrical resolution was best (79% resolution) when the ratio of air to emulsion flow rate (volumetric) in the coalescer was about 120:1. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：6279 / 6284

页数：6

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