摘要
利用旋转滴界面张力仪,研究了在增加环氧乙烷基团(EO)的情况下,烷基糖苷与醇醚糖苷单独使用对正构烷烃及辽河原油之间的界面张力的影响、在复合体系下对界面张力的影响;考察了表面活性剂质量分数、一价与二价离子浓度和EO基团对体系动态界面张力的影响。结果表明,两种糖苷型表面活性剂可以与十二烷基苯磺酸钠产生较强的协同作用,同时EO链可以调节表面活性剂的亲水亲油平衡值,使得表面活性剂在界面处排列更紧密;矿化度的增加可以压缩双电子层,使得界面处分子紧密排布,降低界面张力。在适当的矿化度条件下,复配表面活性剂系统可以与辽河稠油间产生超低界面张力。
The effects of alkyl glycoside and alcohol ether glycoside alone on the interfacial tension between n-alkanes and Liaohe crude oil and on the interfacial tension in a composite system were studied by using a rotary drop interfacial tensimeter with the addition of ethylene oxide group(EO).The effects of mass fraction of surfactant,concentration of univalent and bivalent ions and EO group on dynamic interfacial tension of the system were investigated.The results show that the two glycoside surfactants can produce strong synergistic effect with sodium dodecylbenzene sulfonate,and the EO chain can adjust the hydrophilic and oleophilic balance of the surfactants,so that the surfactants are more closely arranged at the interface.The increase of salinity can compress the double electron layer,make the interfacial molecules closely arranged,and reduce the interfacial tension.Under proper salinity conditions,the mixed surfactant system can produce ultra-low interfacial tension with Liaohe viscous oil.
作者
刘俊鹏
吴玉国
LIU Jun-peng;WU Yu-guo(College of Petroleum Engineering,Liaoning Petrochemical University,Fushun 113001,China)
出处
《应用化工》
CAS
CSCD
北大核心
2024年第1期126-130,共5页
Applied Chemical Industry
基金
辽宁省博士科研启动基金计划项目(2020-BS-227)
辽宁省教育厅科学研究项目(L2020024)
辽宁省高等学校创新人才支持计划项目(2020-68)。
关键词
界面张力
稠油
矿化度
表面活性剂
正构烷烃
interfacial tension
viscous oil
mineralization
surfactants
n-alkanes
