Demulsifier Definition | TOPLUS

Demulsifier – Oilfield chemical additives

Which is a surfactant that breaks up emulsions.

Since some solids are difficult to dissolve in water, when one or more of these solids exist in an emulsified state in a large amount in an aqueous solution, the solution is called an emulsion.
The most typical ones are the oil-water mixture in oil-water separation and the water-oil mixture in sewage treatment. In these two phases, a relatively stable water-in-oil or oil-in-water structure is formed. This is called an ‘electric double layer structure’. Therefore, in order to achieve the purpose of two-phase separation, it is necessary to use some agents to destroy the electric double layer structure and stabilize the emulsion system. These agents added to break the emulsification are called demulsifiers.
According to different uses, demulsifiers can be divided into crude oil demulsifiers and reverse phase demulsifiers.
– Crude oil demulsifier: The chemical action of the demulsifier is used to separate the oil and water in the emulsified oil-water mixture to achieve the purpose of dehydrating the crude oil to ensure the water content standard of the crude oil export.
– Inverse demulsifier: Inverse demulsifier: separates oil, water and harmful impurities in sewage. Thus purify the sewage to meet water quality requirements or meet sewage discharge requirements.

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