Demulsifier For Oily Water Separating

Demulsifier fast acting product is one of important additive for oily water separating in demulsifier. Demulsifier fast acting has a good dehydration performance in the place with a high standard for temperature.  

The main working principles of demulsifier fast acting product is as follows:

1). Displacement: Demulsifier fast acting product molecules can quickly diffuse to the oil-water interface and displace the emulsifier molecules that originally stabilized the emulsion on the interface. Since the affinity of demulsifier molecules to oil and water is different from that of emulsifiers, the stability of the original interfacial film is destroyed. For example, in oil production, the interfacial film of crude oil emulsion is usually stabilized by natural emulsifiers. After the addition of demulsifier fast acting product, these natural emulsifiers are replaced and the strength of the interfacial film is reduced. This process is named oily water separation emulsion in crude treatment. 

2). Destroy the interfacial film: Demulsifier fast acting product can interact with the components in the interfacial film, such as through chemical reactions, dissolution or other means, so that the structure of the interfacial film is destroyed, which leads to the weakening of the strength of the film or even rupture. Once the interfacial film is broken, the oil droplets and water droplets in the emulsion will approach each other, gather and finally separate(Oily water separation emulsion). For example, some demulsifier fast acting product can react with specific groups on the interfacial film, causing it to lose the ability to stabilize the emulsion.

3). Flocculation-coagulation effect: Demulsifier fast acting product cause the tiny droplets in the emulsion to flocculate, that is, multiple small droplets gather together to form larger particles. These floccules are more likely to coalesce under the action of gravity or other external forces, that is, the droplets further merge and become larger(oily water separation emulsion). As the droplets continue to coalesce, they will eventually settle or float from the continuous phase to achieve oily water  separation emulsion. For example, in sewage treatment, after the oil-containing emulsion is treated with a demulsifier fast acting product, the oil droplets flocculate and coalesce and are separated from the water, this process is named oily water separating in demulsifier.

4). Neutralize the charge: For some emulsions that rely on charge stability (such as some systems containing ionic emulsifiers), demulsifier fast acting product can neutralize the charge on the droplet surface and reduce the electrostatic repulsion between the droplets. When the electrostatic repulsion weakens, the droplets are more likely to approach each other and coalesce, thereby destroying the stability of the emulsion. For emulsion wastewater generated in some chemical production processes, using a suitable demulsifier fast acting product to neutralize the charge can achieve demulsification(Oily water separation emulsion).

5) Change interfacial tension: Demulsifier fast acting product can reduce the tension of the oil-water interface, reducing the interaction between oil droplets and water droplets at the interface. In this way(Oily water separating in demulsifier), it is easier for oil droplets and water droplets to overcome the interfacial energy barrier and separate. For example, some demulsifier with special molecular structures can significantly reduce the interfacial tension of oil and water, prompting the emulsion to break quickly.

We also could supply demulsifier MSDS in order to learn more details about demulsifier.

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