Composite oil-soluble demulsifier product and its production method

Abstract

This invention provides a kind of composite oil-soluble demulsifier and its preparing method. The composite oil-soluble demulsifier is composed by mixed solvent and functional demulsifier. The mixed solvent is made of one or several kinds of organic solvents in dimethylbenzene, methanol, isopropanol, solvent oil, dimethyl carbonate, while the functional demulsifier is made of non-ionic surfactant. The mass percent of the mixed solvent is 30-70 while that of the functional demulsifier is 70-30. The composite process is proceeded in agitated still which has heat-insulating cover, and controlled conditions are as follows: composite mixing temperature 20-80 deg C; agitating speed 30-150r / min; agitating time 20-60min plugging temperature30-40deg C.

Description

technical field

[0001] The invention relates to the dehydration or demulsification of hydrocarbon oil, in particular to a compound oil-soluble demulsifier product used in the demulsification dehydration and desalination process of crude oil emulsion in oil fields and refineries and its production method. Background technique

[0002] Chinese patents CN1600835A, CN1618835A, CN1544117, CN1631483A, CN1485410A, etc. have introduced a large number of molecular structures of demulsifiers and synthesis and preparation methods of demulsifiers with different structures; there are also many invention patents related to demulsifier types. However, these patents have overemphasized the role of different molecular functional structures in the demulsification process of crude oil emulsions. Due to the diversity of crude oil varieties and types, the complexity of crude oil emulsions determines the strong pertinence of demulsifiers in the application process. , lead...

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