改性超支化聚乙烯亚胺破乳剂的合成及其应用

doi:10.3969/j.issn.1001-8719.2021.03.013

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

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. 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 Lifeng^1,2, ZHAN Ningning³, CHEN Cuiting^1,4, QIN Lijuan¹, ZHAO Xinxing¹, TENG Houkai^1,4, FANG Wenjun⁵

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/Abstract

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

中图分类号:

TE39

张丽锋, 詹宁宁, 陈翠婷, 秦立娟, 赵新星, 滕厚开, 方文军. 改性超支化聚乙烯亚胺破乳剂的合成及其应用[J]. 石油学报（石油加工）, 2021, 37(3): 584-592.

ZHANG Lifeng, ZHAN Ningning, CHEN Cuiting, QIN Lijuan, ZHAO Xinxing, TENG Houkai, FANG Wenjun. Synthesis of Modified Hyperbranched Polyethyleneimine and Its Application in Demulsfication[J]. Acta Petrolei Sinica(Petroleum Processing Section), 2021, 37(3): 584-592.

[1]	沈燕宇，何桂金，郭永胜，方文军. 超支化聚合物作为金属纳米粒子稳定剂的研究进展[J]. 石油学报（石油加工）, 2017, 33(4): 605-618.
[2]	王大喜赵玉玲潘月秋张宏业郭磊. 稠油破乳作用机理的量子化学和分子力学研究[J]. 石油学报（石油加工）, 2007, 23(5): 66-70.

改性超支化聚乙烯亚胺破乳剂的合成及其应用

Synthesis of Modified Hyperbranched Polyethyleneimine and Its Application in Demulsfication

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