Demulsifier is a non-ionic surfactant used for dehydration to remove water from crude oil and heavy oil to meet water content requirements.It is used in oil wells to reduce the viscosity of crude oil, so that the well is not blocked. And it is soap odor,soluble in water.It’s aqueous solution is milky white.

In crude oils and other mixtures, since some of the solids are hardly soluble in water, when these solids are present in one or more amounts in an aqueous solution, these solids may be present in the water in an emulsified state under the agitation of hydraulic or external power,forming emulsion.

In this case, some agents are put in order to destroy the stable electric double layer structure and stabilize the emulsifying system, thereby achieving the purpose of separation. These agents used to achieve the destructive emulsification are referred to as demulsifiers.

Crude oil demulsification refers to the use of the chemical action of the demulsifier to remove The oil and moisture from the emulsified oil-water mixture, so as to achieve the purpose of dehydration of the crude oil to ensure the water supply standard of the crude oil.

The most effective method for the separation of the organic phase and the aqueous phase is to use a demulsifier to eliminate the emulsification to form an emulsified interface with a certain strength to achieve two-phase separation.However, different demulsifiers have different ability to break the organic phase, and the performance of the demulsifier directly affects the two-phase separation effect.

An important procedure in the production of penicillin is the extraction of penicillin from a penicillin fermentation broth with an organic solvent (such as butyl acetate). Since the fermentation broth contains complex substances such as proteins, carbohydrates, and mycelia. The interface of the organic phase and water phase is unclear in extraction,and the emulsification zone with a certain intensity has a great influence on the yield of the finished product.

For this reason, demulsifiers must be used to break the emulsion and eliminate the emulsification phenomenon so that the two phases can be quickly and effectively separated.

Common demulsifier:

1.SP type demulsifier

2.AP type demulsifier

3.AE type demulsifier

4.AR type demulsifier

Reversed demulsifier:

Effectively improve the interfacial tension of water-in-oil (W/O) or oil-in-water (O/W) emulsions, so that the colloidal particles in the dirty water lose stable repulsive force and attractiveness, eventually lose stability and form flocs, Further through chemical bridging, the separation of oil and water in the dirty water and the separation of harmful impurities are finally completed, so as to recover the oil and purify the dirty water, to meet the water quality requirements of the subsequent treatment process or to meet the national requirements for dirty water discharge.

Reversed demulsifier industry standard:

Reversed-phase demulsifiers are mainly used for the treatment of oil-bearing dirty water in oil and gas fields, with a focus on clear water quality, re-injection or efflux of wastewater after treatment, but also to make up for the shortcomings of traditional demulsifiers,which are widely used in petrochemicals,chemicals,and degreasing of dirty water in pharmaceutical, refining, and mechanical processing industries.