Demulsification Performance and Mechanism of Dumbbell-shaped Fluoro Copolymers in Diesel Emulsions

被引：0
|
作者：
Zhang, Yue [1 ,2 ]
Huang, Xin [1 ,2 ]
Jiang, Wei [3 ]
Bai, Xue-Li [1 ,2 ]
Wen, Liang [1 ,2 ]
Zhao, Yong-Xiang [1 ,2 ]
机构：
[1] College of Chemistry and Chemical Engineering, Shanxi University, Taiyuan,Shanxi,030006, China
[2] Engineering Research Center of Ministry of Education for Fine Chemicals, Taiyuan,Shanxi,030006, China
[3] Shanxi Provincial Chemical Design Institute, Taiyuan,Shanxi,030024, China
来源：
Jingxi Huagong/Fine Chemicals | 2019年 / 36卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Efficiency - Emulsification - Oil fields - Polyethylene oxides - Diesel engines - Demulsification - Polyethylene glycols;
D O I：
10.13550/j.jxhg.20180703
中图分类号：
学科分类号：
摘要：
The demulsification performance of three fluorinated multi-block copolymers with dumbbell- shaped structure (FMCDSs) containing different hydrophilic polyethylene glycol (PEG) segment in diesel oil (0#)/water emulsion were investigated, and compared with those of polyether demulsifiers and dumbbell-shaped polyglycerol-PEG (PBG) polymers. The results showed that these FMCDSs exhibited better demulsification performance than the hydrocarbon polymers. PEG segment length in FMCDSs had a significant effect on demulsification performance. Especially, the synthesized demulsifier containing PEG- 4000 segment showed good diesel separation efficiency, and the oil separation efficiency reached 95% within 30 min at a dosage of 300 mg/L (30℃). In addition, based on the results of interfacial tension and interfacial dilation rheology measurements, it was found that the FMCDSs could effectively adsorb on the diesel-water interface, and the fluorined groups were the major factor in producing good demulsification properties. © 2019, Editorial Office of FINE CHEMICALS. All right reserved.
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页码：999 / 1004
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