This study have compared self-made demulsiferTJ-1 and flocculant P-3 with PAC and PFS through removal effects of oil and SS in dense oil extraction wastewater and have researched the optimal condition of experiments.

Preparation of new crude oil demulsifier using nanotechnology;

Study on low tempurature demulsifier test for high water-content crude fluid;

Development of acrylic modified crude demulsifier;

The operation of tar-ammonia separation system in coking plant is analysed,then the effective emulsion breaker,which is suitable for tar and ammonia fast separation,is choosen to make experiment.

The corrosion causes are analyzed and corrosion control measures are taken such as optimization of electro-static desalter operation, strengthened overhead pH value control, selection of appropriate emulsion breakers and corrosion inhibitors and application of proper coating for heat exchange.

At the same time it introduces the method of compounding emulsion breaker which contains silicon and application in the course of washing with water which is a part of producing petroleum resin.

The recent demulsifying agents were reviewed and the future develop.

The effects of demulsification by PAS and PFS as demulsifying agents are co.

3-phase separator, on the basis of " 4 in one" and structure-improved,can be used in oilfield production,simplifies process flow greatly and combining with optimizing demulsifying agents makes crude desalinization-dewater can be done under lower temperature.

Development and industrial test of high efficiency demulsifying agent ZYEB-1 used in refineries;

Experimental study on the treatment of oil extraction wastewater with new demulsifying agent;

Synthesis of block polyether demulsifiers and demulsification rule;

The Action Mechanism of Demulsifiers at Model O/W Interfacial Film;