A demulsifier is a type of surfactant capable of breaking down emulsions. Its characteristics are notable:
It has strong specificity, with different types of demulsifiers suitable for treating emulsions of varying properties, such as water-in-oil or oil-in-water types.
It demonstrates a rapid demulsification speed, swiftly disrupting the stable structure at the oil-water interface and enabling quick separation of oil and water.
It exhibits high dehydration efficiency, effectively reducing the water content in the oil phase and improving oil quality.
It possesses good adaptability, functioning effectively under a wide range of temperatures and pH values. It is widely used in industries such as oil extraction, oil refining, and wastewater treatment to facilitate oil-water separation, reduce equipment corrosion, and enhance production efficiency and product quality.
Product Introduction：
A demulsifier is a surfactant capable of breaking emulsions, primarily by disrupting the stable electrical double layer and destabilizing the emulsified system, thereby achieving separation of the two phases.
Demulsifiers can be classified according to surfactant types into cationic, anionic, nonionic, and amphoteric (zwitterionic) demulsifiers. Common anionic demulsifiers include carboxylate salts, sulfonate salts, and polyoxyethylene alkyl sulfate salts.
Their mechanisms of action are diverse, including phase inversion (or "phase transfer–reverse deformation"), electrical double-layer compression, adsorption and charge neutralization, adsorption bridging, and enmeshment by precipitates. These mechanisms destabilize fine suspended particles and colloidal ions, promoting their aggregation, flocculation, coagulation, and sedimentation, ultimately achieving emulsion breaking and phase separation.
Demulsifiers are available in both solid and liquid forms. Common packaging specifications include 25 kg/bag and 25 kg/drum. Some products are non-toxic, odorless, and non-irritating, appearing as a light yellow powder or liquid, and are fully miscible with water in any proportion.
Product Advantages：
High-Efficiency Separation: Effectively reduces the interfacial tension of water-in-oil (W/O) or oil-in-water (O/W) emulsions, destabilizing colloidal particles in wastewater and promoting their aggregation into flocs. This facilitates efficient separation of oil and water, as well as removal of harmful impurities, thereby purifying the wastewater. For example, in oilfield operations during crude oil dehydration and demulsification, it weakens the strength of the interfacial film surrounding oil droplets, enabling highly efficient oil-water separation.
Broad Applicability: A variety of demulsifiers are available, tailored to treat oily wastewater from different industries. For instance, crude oil demulsifiers are suitable for oil-water separation of produced fluids in oilfields, as well as for crude oil desalting and impurity removal. In contrast, reverse-phase demulsifiers perform effectively in deoiling highly emulsified wastewater from refineries and oilfield produced water.
Environmental Friendliness: Some demulsifiers are non-toxic, odorless, and non-irritating, and do not cause additional environmental pollution during use.
Service Industries：
Petroleum Industry: Used for crude oil dehydration and demulsification in oilfields, improving the interfacial properties of crude oil. It is also employed in crude oil desalting and impurity removal, as well as in treating produced water from oilfields and oily wastewater from refineries.
Machining and Hardware Manufacturing Industry: Used for demulsification treatment of emulsified wastewater and cutting fluid waste generated during production processes.
Other Industries: Also applicable to the treatment of various industrial wastewaters, including ink wastewater, paint wastewater, electroplating wastewater, chemical wastewater, high-salinity wastewater, degreasing wastewater, oily wastewater, grease-laden wastewater, and spray-painting wastewater, as well as demulsification treatment of electronic industry wastewater and coking wastewater.
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