石油学报(石油加工) ›› 2021, Vol. 37 ›› Issue (3): 584-592.doi: 10.3969/j.issn.1001-8719.2021.03.013

• 研究报告 • 上一篇    下一篇

改性超支化聚乙烯亚胺破乳剂的合成及其应用

张丽锋1,2, 詹宁宁3, 陈翠婷1,4, 秦立娟1, 赵新星1, 滕厚开1,4, 方文军5   

  1. 1. 天津大学 化工学院,天津 300072; 2. 中海油 天津化工研究设计院有限公司, 天津 300131; 3. 中海油 能源发展股份有限公司工程技术分公司,天津 300450;
    4. 河北工业大学 化工学院,天津 300132;
    5. 浙江大学 化学系,浙江 杭州 310027
  • 收稿日期:2020-03-05 修回日期:2020-12-11 出版日期:2021-05-25 发布日期:2021-03-03
  • 通讯作者: 张丽锋,男,工程师,博士,从事超支化聚合物方面研究,E-mail:zlifeng@zju.edu.cn E-mail:zlifeng@zju.edu.cn
  • 作者简介:张丽锋,男,工程师,博士,从事超支化聚合物方面研究,E-mail:zlifeng@zju.edu.cn
  • 基金资助:
    中国博士后科学基金项目(2019M661034)资助

Synthesis of Modified Hyperbranched Polyethyleneimine and Its Application in Demulsfication

ZHANG Lifeng1,2, ZHAN Ningning3, CHEN Cuiting1,4, QIN Lijuan1, ZHAO Xinxing1, TENG Houkai1,4, FANG Wenjun5   

  1. 1. School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, China; 2. Tianjin Chemical Research and Design Institute Company Limited., CNOOC, Tianjin 300131, China; 3. Energy Technology & Service Limited-Drilling & Production Co., CNOOC, Tianjin 300450, China; 4. School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300132, China; 5. Department of Chemistry, Zhejiang University, Hangzhou 310058, China
  • Received:2020-03-05 Revised:2020-12-11 Online:2021-05-25 Published:2021-03-03

摘要: 以棕榈酰氯和超支化聚乙烯亚胺(HPEI)进行酰胺化反应,得到一系列改性超支化聚乙烯亚胺(HPEI-C16)破乳剂,考察了其添加量、破乳温度及沉降时间对柴油等油品破乳性能的影响,并探究破乳过程中油滴的破裂速率常数和平均粒径变化,分析其破乳机理。结果表明,HPEI-C16-2破乳剂在质量浓度为80 mg/L、沉降时间为30 min、破乳温度为60 ℃时,其破乳脱油率达91%。相比于传统破乳剂,改性超支化聚乙烯亚胺因具有独特的超支化、多位点结构,用作破乳剂时界面活性高、添加量少、沉降时间短。其破乳机理为絮凝聚结机理和顶替置换机理。

关键词: 超支化聚合物, 多位点结构, 高效破乳剂, 破乳机理

Abstract: In this work, a series of palmitoyl hyperbranched polyethyleneimine (HPEI-C16) were synthesized through the amidation reaction of palmitoyl and hyperbranched polyethyleneimine (HPEI). The effects of demulsifier concentration, demulsification temperature and settling time to the diesel on the performance of demulsifier were investigated, and the research of rupture rate constant of oil droplets and the real-time size changes of oil droplets in the demulsification were also studied to analyze its demulsification mechanism. The results show that the oil removal rate reaches 91% with the demulsifier mass concentration of 80 mg/L, the setting time of 30 min and demulsification temperature of 60 ℃. Compared with traditional demulsifiers, it exhibits high interfacial activity, short settling time and low addition amount because of the unique hyperbranched and multi-point structure. In conclusion, the demulsification mechanism is flocculation and coalescence, replace and substitution.

Key words: hyperbranched polymer, multi-point structure, efficient demulsifier, demulsification mechanism

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