Demulsifier additive manufacturer

Crude oil demulsifiers are divided into SP-type demulsifying additive, AP-type demulsifying additive, AE-type demulsifying additive and AR-type demulsifying additive.

1).The main component of SP-type demulsifying additive is polyoxyethylene polyoxypropylene stearyl ether. The theoretical molecular formula is R(PO)x(EO)y(PO)zH, where: EO - polyoxyethylene; PO - polypropylene; R - fatty alcohol; x, y, z - degree of polymerization. The SP-type demulsifier appears as a light yellow paste, with an HLB value of 10 to 12 and is soluble in water.

2).AP-type demulsifying additive is polyoxyethylene polyoxypropylene polyethers initiated by polyethylene polyamines. Demulsifier for industrial use is a multi-branched nonionic surfactant. The molecular formula is D(PO)x(EO)y(PO)zH, where: EO - polyoxyethylene; PO - polyoxypropylene; R - fatty alcohol; D - polyethylene polyamine; x, y, z - degree of polymerization.

3). AE-type demulsifying additive is polyoxyethylene polyoxypropylene polyethers initiated by polyethylene polyamines. Industrial demulsifier additive is a multi-branched nonionic surfactant. Compared with AP-type demulsifier emulsion dewatering, the difference is that AE-type demulsifying additive is two-stage polymers with small molecular weights and short branches. The molecular formula is: D(PO)x(EO)yH, where: EO - polyoxyethylene; PO - polyoxypropylene; D - polyethylene polyamine; x, y - degree of polymerization.

4). AE is a two-stage multi-chain crude oil demulsifier emulsion dewatering treatment and is also suitable for demulsifying additive asphaltene crude oil emulsions. The more surface-active agents made from asphalt as raw materials, the greater the viscosity, the smaller the oil-water density difference and the more difficult it is to demulsify. However, the demulsification speed of using AE-type demulsifiers for industrial use is fast. At the same time, AE-type demulsifying additive is a better anti-wax viscosity reducer.

5). AR-type industrial demulsifier additive is composed of alkyl phenolic resin (AR resin), polyoxyethylene, polyoxypropylene polymers and a new oil-soluble nonionic demulsifier. The HLB value is 4 to 8 and the demulsification temperature is as low as 35 to 45 °C. The molecular formula is: AR(PO)x(EO)yH, where: EO - polyoxyethylene; PO - polyoxypropylene; AR - resin; x, y, z - degree of polymerization.

As a demulsifier factory, we have many types of demulsifying additive for demulsifier emulsion dewatering. According to the classification of surfactants, they can be divided into cationic, anionic, nonionic and two ionic demulsifier for industrial use. Anionic industrial demulsifier additive is carboxylates, sulfonates and polyoxyethylene fatty sulfate salts, etc. They have great effects but have the disadvantage of being easily affected by electrolytes; cationic demulsifier emulsion dewatering is mainly quaternary ammonium salts, which have a significant effect on thin oils but are not suitable for heavy oils and aged oils; nonionic demulsifier for industrial use mainly include block polyethers initiated by amines, block polyethers initiated by alcohols, alkyl phenolic resin block polyethers, phenolic resin block polyethers, silicon-containing demulsifiers, ultra-high molecular weight demulsifiers, polyphosphates, modified flame-retardant polyethers, and imidazoline products. Crude oil demulsifiers serve as representatives of two ionic demulsifiers.

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