Fatty acid type diesel oil anti-wear agent and preparation method thereof

Abstract

The invention relates to a fatty acid type diesel oil anti-wear agent and a preparation method thereof. The method comprises the following steps: emulsifying crude fatty acid by an emulsifier, and processing the emulsified crude fatty acid liquid by a butterfly separator to form a crude fatty acid clear liquid, an emulsified solid and water; and washing the crude fatty acid clear liquid with hot water, carrying out oil-water separation, and carrying out thin film distillation to reduce the water content to 0.03% or below in order to obtain the fatty acid type diesel oil anti-wear agent. The method has the characteristics of no generation of waste gas, wastewater or waste residues in the production process, simplicity in operation, short process flow, energy saving, environmental protection, and high yield and good quality of the product.

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 process of fatty acid type antiwear agent mainly includes molecular distillation method, freezing pressing method and solvent freezing separation method. Molecular distillation method is to separate saturated fatty acids and unsaturated fatty acids from crude fatty acids through multi-stage molecular distillation under high vacuum conditions. Because the physical properties of the crude fatty acids are relatively small, the antiwear agent obtained by molecular distillation separation The product yield and quality have been unsatisfactory; the freezing pressing method is to directly freeze the crude fatty acid into a paste, and then press to obtain the 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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