羧基甜菜碱-烷醇酰胺复配体系界面张力研究  

STUDIES ON INTERFACIAL TENSION FOR CARBOXYLBETAINE/ALKANOLAMIDE COMPOUND SYSTEM

作　　者：李瑞冬[1] 仇珍珠 葛际江[1] 张永刚[1] 张建强[1] 张贵才[1] 

机构地区：[1]中国石油大学(华东)石油工程学院,山东青岛266555 [2]中国石油技术开发公司,北京100028

出　　处：《精细石油化工》2012年第4期8-12,共5页Speciality Petrochemicals

摘　　要：研究了以不同比例复配的羧基甜菜碱/烷醇酰胺体系与临盘原油的动态界面张力,筛选出了适用于临盘凝油的表面活性剂体系。结果表明,单一的烷醇酰胺或甜菜碱与临盘原油间的界面张力值达不到超低值;而两种活性剂以1∶1和2∶1进行复配时,具有明显的协同效应,在总浓度为0.005%～0.2%范围内,油水界面张力值可降低到10-4 mN/m数量级,且经过石英砂静态吸附后,复配体系具有较好的低界面张力性能,是一种具有现场应用价值的表面活性剂体系。Ultra-low interracial tension system plays an important role in chemical flooding process. The dynamic interracial tension （IFT） between compounds with different proportion of carboxylbe- taine / alkanolamide and Linpan crude oil was studied, a kind of surfactant system was screened for Linpan waxy oil. The results show that neither carboxylbetaine nor alkanolamide alone can reduceIFT to ultra-low value. Compound solutions of alkanolamide and carboxyl betaine present obvious synergism when the proportion is 1 ： 1 and 2 ： 1. The value of IFT can reach to 10^-4 mN/m magni- tude with 0. 005%- 0.2% compound system. After static adsorption by quartz sand, the surfactant system still has lower interfacial tension performance, with the possibility for field application.

关 键 词：羧基甜菜碱 烷醇酰胺 复配 超低界面张力 

分 类 号：TQ423.31[化学工程]