CHEMICAL DEMULSIFICATION OF PETROLEUM EMULSIONS USING OIL-SOLUBLE DEMULSIFIERS

被引：143

作者：

KRAWCZYK, MA ^{[1
]}

WASAN, DT ^{[1
]}

SHETTY, CS ^{[1
]}

机构：

[1] IIT,DEPT CHEM ENGN,CHICAGO,IL 60616

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1991年 / 30卷 / 02期

关键词：

D O I：

10.1021/ie00050a014

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The factors affecting the coalescence and interfacial behavior of water-in-crude-oil emulsions in the presence of oil-soluble demulsifiers were investigated. The emulsion-breaking characteristics and interfacial properties of East Texas Crude and a model system were compared. The variation of interfacial tension with demulsifier concentration for the model system was ascertained by measuring the interfacial tensions between the oil and water phase. Interfacial activity, adsorption kinetics, and partitioning were shown to be the most important parameters governing demulsifier performance. A conceptual model of drop-drop coalescence process in demulsification was presented which indicates that the interfacial activity of the demulsifier must be high enough to suppress the interfacial tension gradient. This accelerates the rate of film drainage, thus promoting coalescence.

引用

页码：367 / 375

页数：9

共 12 条

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