Fatty acid type diesel antiwear agent and preparation method thereof

Abstract

The invention relates to a fatty acid type diesel oil antiwear agent and a preparation method thereof. The steps include: the crude fatty acid is emulsified by an emulsifier and then divided into crude fatty acid clear liquid, emulsified solid and water by a butterfly separator; the crude fatty acid clear liquid is washed with hot water and After oil-water separation, use thin-film distillation to reduce the water content to less than 0.03%, and obtain fatty acid diesel antiwear agent. The invention produces no waste gas, waste water and waste residue in the production process, has the characteristics of simple operation, short process flow, energy saving and environmental protection, high product yield and good quality.

Description

technical field [0001] The invention relates to a diesel antiwear agent, in particular to a fatty acid type diesel antiwear agent and a preparation method thereof. Background technique [0002] At present, the preparation techniques of fatty acid antiwear agents mainly include molecular distillation, freeze pressing and solvent freeze separation. The molecular distillation method is to separate the saturated fatty acid and the unsaturated fatty acid in the crude fatty acid through multi-stage molecular distillation under high vacuum conditions. Since the physical properties of each component in the crude fatty acid are relatively small, the anti-wear agent obtained by molecular distillation separation The product yield and quality have been unsatisfactory; the freezing press method is to directly freeze the crude fatty acid into a paste, and then press it to obtain unsaturated fatty acid. This method is difficult to achieve continuous production, the production efficiency is...

AI Technical Summary

Problems solved by technology

The molecular distillation method is to separate the saturated fatty acid and the unsaturated fatty acid in the crude fatty acid through multi-stage molecular distillation under high vacuum conditions. Since the physical properties of each component in the crude fatty acid are relatively small, the antiwear agent obtained by molecular distillation separation The product yield and quality have been unsatisfactory; the freezing press method is to directly freeze the crude fatty acid into a paste, and then press it to obtain the unsaturated fatty acid. This method is difficult to achieve continuous production, the production efficiency is relatively low, and the energy consumption is high. The amount of labor is large; the solvent freezing separation method is to directly freeze the mixed solution of crude fatty acid and organic solvent to a paste, and then obtain unsaturated fatty acid through centrifugation. This method consumes a lot of energy when freezing and recovering solvent, and the organic solvent The volatility is strong, and the requirements for equipment, production environment and operation are high

[0003] Therefore, the existing various fatty acid type antiwear agent preparation processes have deficiencies, and the economic benefits are also relatively poor in actual production.

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