原油/盐水界面张力的动力学研究

应用科学学报 ›› 2000, Vol. 18 ›› Issue (1): 58-63.

原油/盐水界面张力的动力学研究

浦炳寅¹, 陈东浩²

1. 宁波大学化学系, 浙江宁波 315211;
2. 美国宾夕法尼亚州立大学化学工程系, PA16802, U.S.A

收稿日期:1998-10-04 修回日期:1999-04-10 出版日期:2000-03-31 发布日期:2000-03-31
作者简介:浦炳寅(1944-),男,江苏无锡人,副教授,博士.

A Study of the Dynamic Interfacial Tension of Crude Oil/Brine Interface

PU Bing-yin¹, CHEN Dong-hao²

1. Department of Chemistry, Ningbo University, Ningbo 315211 China;
2. Department of Chemical Engineering, Pennsylvania State University, PA16802, U.S.A

Received:1998-10-04 Revised:1999-04-10 Online:2000-03-31 Published:2000-03-31

摘要/Abstract

摘要： 用滴体积法测定了原油/盐水的动界面张力,在三种不同的温度下,当非离子原油破乳剂存在时(水相或油相中),在不同的破乳剂浓度下,测定了各体系的动界面张力.结果表明:原油中的天然表面活性剂分子较慢地吸附到界面上;破乳剂分子较快地吸附到界面上具有竞争优势;破乳剂的浓度和使用温度对界面张力的下降影响很大.

关键词: 破乳剂, 动界面张力

Abstract: Drop volume method was used to measure the dynamic interfacial tension at the crude oil/brine interface. Experiments were performed with the existence of a nonionic demulsifier in water or crude oil under different concentrations and at three operation temperatures.
The result shows that (1) natural surfactants in crude oil were adsorbed slowly to the interface; (2) the fast build -up of demulsifiers present in crude oil at the interface was observed and they had advantage in the competition; (3) the concentration and operation temperature of demulsifier played an important role in affecting the dynamic interfacial tension data. Our investigation shows the ways to optimize the demulsification conditions and understand the demulsification mechanism.

Key words: demulsifier, dynamic interfacial tension

中图分类号:

TE624.1

浦炳寅, 陈东浩. 原油/盐水界面张力的动力学研究[J]. 应用科学学报, 2000, 18(1): 58-63.

PU Bing-yin, CHEN Dong-hao. A Study of the Dynamic Interfacial Tension of Crude Oil/Brine Interface[J]. Journal of Applied Sciences, 2000, 18(1): 58-63.