非离子表面活性剂在黏土矿物表面的吸附规律研究  

Study on the adsorption law of non ionic surfactants on the surface of clay minerals

作　　者：赵帅 田雨 郑皓轩 田浩睿 张瑞[1] 呼强强 晏晓龙 师永民 ZHAO Shuai;TIAN Yu;ZHENG Hao-xuan;TIAN Hao-rui;ZHANG Rui;HU Qiang-qiang;YAN Xiao-long;SHI Yong-min(Shaanxi Provincial Key Laboratory of Light Chemical Auxiliaries,Shaanxi University of Science and Technology,Xi’an 710021,China;School of Earth and Space Sciences,Peking University,Beijing 100871,China)

机构地区：[1]陕西科技大学陕西省轻化工助剂重点实验室,陕西西安710021 [2]北京大学地球与空间科学学院,北京100871

出　　处：《应用化工》2023年第9期2728-2732,共5页Applied Chemical Industry

基　　金：国家自然科学基金(51904180)。

摘　　要：为针对不同地层选取适应性更强的化学剂,减少黏土矿物对表面活性剂的吸附损耗,以脂肪醇聚氧乙烯类表面活性剂为例,采用静态吸附法研究非离子表面活性剂在不同黏土矿物表面的吸附规律,探讨不同EO加成数、不同碳链数、临界胶束浓度和Zeta电位对非离子表面活性剂吸附机理的影响。结果表明,在吸附过程中,碳链长度-疏水性-吸附量之间始终为正反馈效果;EO加成数-氢键/疏水性-吸附量之间的关系取决于氢键强度与疏水性强度的关系。优选得出十二烷基醇聚氧乙烯醚-7为抗吸附性较好的非离子表面活性剂,也为三次采油过程中化学剂的选取提供了依据。In order to select oil displacement agents with stronger adaptability for different formations and reduce the adsorption loss of clay minerals on surfactants,taking fatty alcohol polyoxyethylene surfactants as an example,the static adsorption method was used to study the adsorption law of nonionic surfactants on different clay mineral surfaces,and the effects of different EO addition numbers,different carbon chain numbers,critical micelle concentration,and Zeta potential on nonionic surfactants and their adsorption mechanism were discussed.The results show that there is always a positive feedback effect between carbon chain length-hydrophobicity-adsorption amount during the adsorption process;the relationship between EO addition number-hydrogen bond/hydrophobicity-adsorption amount depends on the relationship between hydrogen bond strength and hydrophobicity strength.Which is concluded that lauryl polyoxyethylene ether-7 is a nonionic surfactant with good anti adsorption property,and it also provides a basis for the selection of chemical agents in the tertiary oil recovery process.

关 键 词：吸附损耗 脂肪醇聚氧乙烯醚 临界胶束浓度 ZETA电位 

分 类 号：TQ317[化学工程—高聚物工业] TE39[石油与天然气工程—油气田开发工程]