What is water soluble demulsifier?

Water soluble demulsifier, as the name suggests, is a kind of chemical demulsifier can be dissolved in water.

to understand it, we first need to understand what is "emulsion" and "demulsification":

• emulsion: a stable mixture of two immiscible liquids (such as oil and water), one of which is dispersed in the form of tiny droplets in the other under the action of an emulsifier. The most common examples are the "water-in-oil" type emulsions (water droplets dispersed in crude oil) produced in crude oil extraction, and the "oil-in-water" type emulsions (oil droplets dispersed in water) produced in industrial production.

  Demulsification of

• : a process in which the oil and water are separated by chemical or physical methods to destroy the stability of the emulsion.

• Demulsifiers: Chemical agents used to achieve the demulsification process.

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its core feature is that its molecular structure has a strong hydrophilic part (such as polyoxyethylene chain, sulfonic acid group, carboxyl group, etc.), so that it can be well dissolved or dispersed in water. Therefore, it is mainly used in the demulsification of "oil-in-water" type emulsions.

Water-soluble demulsifier use

water-soluble demulsifier main application field is to deal with all kinds of oily wastewater, oil-water separation, so as to achieve the purpose of oil recovery, water purification and environmental protection. Specific applications include:

1. Oil exploration and refining industry

• : during the process of crude oil extraction, a large amount of produced water is produced, which usually contains small dispersed oil droplets and forms a stable "oil-in-water" emulsion. Water-soluble demulsifier can destroy the emulsion, so that the oil droplets gather and float, so as to purify the water quality, so that the treated water can be injected back into the formation or discharge up to the standard.

  Refinery wastewater treatment

• : Oily wastewater generated during the refining process also needs to be pretreated with water-soluble demulsifiers to remove most of the floating oil and dispersed oil.

Treatment of cutting fluid and coolant wastewater

• : The cutting fluid and coolant used in the machining process are mostly "oil-in-water" emulsions. After waste, it is necessary to use water-soluble demulsifier to break the emulsion, separate the mineral oil and surfactant, and realize the purification of wastewater.

treatment of oil-containing wastewater

• : for example, wastewater generated during fried food, meat processing, etc., contains animal and vegetable oils and fats. Water-soluble demulsifiers can help separate and recover these oils and reduce the chemical oxygen demand (COD) and oil content in the wastewater.

• the treatment of oily and waxy wastewater produced in the textile process.

5. Ship Sewage Treatment

• the treatment of oily water from the ship's engine room to meet International Maritime Organization (IMO) discharge standards.