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1. This article briefly introduces the mechanism of demulsification process.

2. Moreover, reuse of oil phase after demulsification is discussed.

3. Comparing the effects of different demulsification methods, the results showed the effect of freezing and thawing to be the best.

4. In order to promote the crude oil demulsification and improve dewatering ratio, we have synthesized a kind of cationic surfactant C in the lab.

5. Last the demulsification mechanism of ASP flooding produced liquid was summarized.

6. This paper studies two factors affecting the demulsification and dehydration effect of ultrasonic wave: frequency and acoustic intensity.

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7. During the freezing and thawing demulsification, the oil recovery was increased with decrease in freezing temperature.

8. Firstly, in this paper, study on demulsification technology of W/O emulsion by inorganicmicro-filtration membrane with degree of vacuum as transmembrane pressure.

9. The effects of different demulsification methods on the recovery of emulsion were compared, and the extraction mechanism was studied.

10. The chemical demulsification of crude oil emulsions (W/O emulsions ) is reviewed in two parts on the basis of 55 papers published at home and abroad since 1990.

11. The advances of study on stabilization and demulsification of emulsion liquid membrane separation technique are reviewed.

12. Membrane demulsification method includes microfiltration membrane method and microporous membrane method.

13. Development of demulsification techniques for crude oil emulsion is one of the most important research topics in petroleum industry.

14. Polymer flooding technics can stabilize crude oil output, but it also increases the difficulty of crude oil demulsification and sewage treatment.

15. The evaluation shows that the demulsifier has a good demulsification performance for Daqin g crude, the dehydration efficiency increases above 5%, oil content in waste water decreases 40%.

16. Turbine oil mixed with water has occurred in the 125 MW turbine because of steam leakage in the shaft packing which lead to the time rising of turbine oil demulsification.

17. A new type of biodemulsifier was prepared. The room and the pilot testing for crude oil demulsification with biodemulsifier were carried out.

18. Objective: It is to investigate the surgery techniques after lens capsular broke during - demulsification surgery of cataract.

19. The experiments show that this method can effectively reflect emulsification or demulsification process.

20. In addition, it was found that the increase of water content was beneficial to demulsification efficiency.

21. This can be referred to when preparing recovery process and demulsification measures.

22. Effects of the membrane pore size, membrane thickness, transmembrane pressure and emulsion composition on demulsification performance were investigated.