原油乳状液稳定性及破乳机理研究进展

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Abstract Crude oil emulsion is a complex oil-water system produced in the process of crude oil exploitation. The natural interfacial active substances and added polymers increase the stability of the emulsion. Gum and asphaltene are considered as the main stabilizers of the oil-water emulsion. Chemical demulsification is a method to separate oil from water by adding demulsifier to emulsion, but the mechanism of demulsification has not been confirmed. The influence mechanism of interfacial active substances in crude oil emulsions, including interfacial film, interfacial tension, gel, asphaltene and so on, on the stability of emulsions was reviewed. The development status and trend of demulsifiers and their effects on emulsions were discussed. At present, the main research directions of demulsifiers include modification and combination, research and development of polyquaternary ammonium salt, polyethers and other demulsifiers The research status of demulsification mechanism and the future research direction of demulsification mechanism and demulsifier were prospected.

Key words： emulsion asphaltene demulsifier interfacial tension demulsification mechanism

Received: 25 April 2023

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	Articles by authors
	FENG Cheng
	ZHENG Huan-ling
	WANG Jia-ning
	SONG Fan-yong
	LI Tian-yuan
	FU Xiao-wen
	HUANG Yu-jie
	ZHANG Wen

Cite this article:

FENG Cheng,ZHENG Huan-ling,WANG Jia-ning等. Research progress on stability and demulsification mechanism of crude oil emulsions[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(8): 4316-4325.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I8/4316

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