磁性碳基纳米破乳剂的制备及其性能  

Preparation and Performance of Magnetic Carbon Based Nanodemulsifier

作　　者：李莹莹 马海瑞[2] 孟祖超[1] 相杰 王天文 LI Yingying;MA Hairui;MENG Zuchao;XIANG Jie;WANG Tianwen(College of Chemistry and Chemical Engineering,Xi'an Shiyou University,Xi'an Shaanxi 710065,China;Xi'an Aerospace Propulsion Institute,Xi'an Shaanxi 710100,China)

机构地区：[1]西安石油大学化学化工学院,陕西西安710065 [2]西安航天动力研究所,陕西西安710100

出　　处：《当代化工》2025年第3期582-588,共7页Contemporary Chemical Industry

基　　金：西安石油大学研究生创新与实践能力培养计划项目(项目编号:YCS23214227);陕西省自然科学基础研究计划项目(项目编号:2018JM2014)。

摘　　要：针对O/W型稠油乳状液破乳难题,以来源广泛的木质素、硝酸铁和聚乙烯醇为原料,简单易控地合成了一种新型的磁性碳基纳米破乳剂MPCs@PVA,并用FT-IR、XRD、SEM、TEM和BET对其结构和形貌进行了表征,通过单因素实验法探讨了温度、时间、pH和破乳剂质量浓度等因素对O/W型乳液破乳性能的影响,确定了最佳破乳条件,并探讨了破乳机理。结果表明:在45℃、破乳剂质量浓度为1.6 g·L^(-1)、破乳时间为60 min、pH为10时的破乳效果最佳,O/W乳液的破乳效率达95.13%。MPCs@PVA在pH=2.0~10.0时对O/W乳液具有良好的破乳性能,赋予了其广泛的应用范围。此外,MPCs@PVA在循环利用6次后的破乳效率仍可达80%以上,具有良好的重复使用性能。In response to the challenge of demulsification of O/W heavy oil emulsions,a new type of magnetic carbon based nanodemulsifier MPCs@PVA was synthesized using widely sourced lignin,iron nitrate and polyvinyl alcohol as raw materials in a simple and controllable manner.The structure and morphology of MPCs@PVA were characterized by FT-IR,XRD,SEM,TEM and BET.The effects of temperature,time,pH and mass concentration on the demulsification performance of MPCs@PVA were investigated by single factor experiment,and the optimal demulsification conditions were determined,and the demulsification mechanism was discussed.The results showed that the best demulsification effect was obtained at 45℃when the mass concentration of demulsifier was 1.6 g·L^(-1),the demulsification time was 60 min,and the pH was 10.And the demulsification efficiency of 95.13%was reached.MPCs@PVA had good demulsification performance for O/W emulsion in the range of pH=2.0~10.0,giving it a wide range of application.In addition,after six cycles,the demulsification efficiency of MPCs@PVA could still be more than 80%,indicating good reusability.

关 键 词：破乳 磁性 纳米材料 性能 分离 再生 石油 

分 类 号：TQ110.9[化学工程—无机化工] TE39[石油与天然气工程—油气田开发工程]