Effects of Different Heavy Crude Oil Fractions on the Stability of Oil-in-water Emulsions—the film properties of heavy crude functional components and water system

被引：1
|
作者：
Chen Yaowu
机构：
来源：
Petroleum Science | 2005年 / 01期
关键词：
viscous crude; oil-in-water emulsion; pressure-area isotherm;
D O I：
暂无
中图分类号：
TE622 [石油的组成、性质与分析];
学科分类号：
摘要：
A series of π-A isotherms are drawn to study the film properties of the components with Langmuir-Blodgett technique. The effects of the aromaticity of spread solvents and pH value on the air/water film formed by the components are investigated. Acid fraction and asphaltene can form stable two-dimensional insoluble films on an air/water surface. The surface film pressure of acid fraction and asphaltene is higher and more stable than that of the other fractions. The surface film pressure of the fraction increases evidently under the basic condition (pH=12). The results show that the interfacial activity of acid fraction and asphaltene is superior to that of the other fractions and the basic condition is favorable to the stability of the O/W emulsion.
引用
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页码：93 / 96
页数：4
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