Demulsifying Additive For Separating Of Oil And Water

The demulsifier for oil in water has multiple performance characteristics. Such as:demulsifying additive is usually a light yellow liquid and a water-soluble polymer.

The oil water separating demulsifier demulsifying has features such as a small dosage, low oil content in wastewater, etc. Meanwhile, the chemical demulsifier can effectively reduce the interfacial tension, destroy the interfacial film, change the surface charge of oil droplets.

The chemical demulsifier also increase the collision probability of oil droplets, adjust the water quality, and demulsifier for oil in water enable the effective removal of suspended substances, organic matters, etc in the water quality, improving the treatment effect.

Demulsifier for oil in water also have advantages such as demulsification at low temperatures and wide adaptability.

Temperature is a major factor in demulsification. It can significantly improve the demulsification efficiency and reduce the viscosity of the emulsion. For example, the viscosity of a crude oil emulsion at 50℃ is more than 50% lower than that at 20℃. 

As the temperature rises, it can promote the collision and coalescence of droplets, enhance molecular thermal motion, and accelerate the diffusion of the demulsifying additive to the interface. 

It also weakens the interfacial adsorption of the emulsifier. For instance, some non-ionic emulsifiers will desorb from the interface at high temperatures. However, if the temperature is too high (e.g., > 100℃), it may cause the decomposition of the demulsifier or increase energy consumption. Thus, a balance between economy and efficiency needs to be struck. Demulsification is a gradual process of droplet coalescence and stratification, which requires sufficient time (usually 30 minutes to 24 hours). In a short time, the demulsifier can only damage part of the interfacial film, and the droplets are not fully coalesced. Auxiliary means such as an electric field or centrifugation can accelerate demulsification. An electric field (such as the high - voltage direct - current electric field commonly used in crude oil demulsification) can polarize the droplets and make them move directionally for collision. Centrifugation promotes the stratification of droplets through centrifugal force, reducing the demulsification time.

Shenyang Jiufang Technology has focused on demulsifying additive production for over 20 years and has rich experimance in oil water separating demulsifier demulsifying field.

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