Preparation method of ester diesel anti-wear agent

Abstract

The invention relates to a diesel anti-wear agent with low cost and excellent anti-wear effect. The diesel anti-wear agent has the characteristics of low acid value, good low-temperature storage performance, lubricating property and the like. The ester diesel anti-wear agent provided by the invention consists of higher fatty acid, polyol, a catalyst, a water carrying agent and a small-molecular alcohol solvent. The preparation method comprises the following steps: under the protection of nitrogen, adding the higher fatty acid and the polyol into a reaction kettle according to a certain proportion, adding the catalyst and the water carrying agent, carrying out heating to 80-130 DEG C under mechanical stirring, carrying out a reaction for 4-6 hours, then adding the small-molecular alcohol solvent when the temperature is reduced to 30-60 DEG C, then carrying out heating to 90-120 DEG C, carrying out a reaction for 2 hours, carrying out vacuum dehydration on the reaction system for 30-60 minutes after the reaction is finished, and filtering and recycling the catalyst for reuse. The diesel anti-wear agent related to by the invention has a simple and efficient synthetic method, is environmentally friendly, and has strong controllability of process parameters.

Description

technical field [0001] The invention belongs to a diesel antiwear agent, in particular to a high-performance, environment-friendly ester type antiwear agent. Background technique [0002] Diesel is not only used as fuel in the engine, but also as a lubricant for the oil transfer pump and high-pressure oil pump. If the lubricity of diesel is not good, it will not be able to provide reliable lubrication for the oil pump, which will lead to excessive wear of the precision parts of the engine, decreased matching accuracy, and diesel mist. Problems such as poor cooling, insufficient engine power or unstable idle speed will reduce the life of the engine, and may cause oil leakage from the oil pump in severe cases. Anti-wear agent is a high-tech engine oil (lubricating oil) additive, which is processed by various technical means, which can reduce engine wear and increase engine power, so it is also called engine maintenance agent or powerful repair agent to improve the lubrication ...

AI Technical Summary

Problems solved by technology

[0002] Diesel is not only used as fuel in the engine, but also as a lubricant for the oil transfer pump and high-pressure oil pump. If the lubricity of diesel is not good, it will not be able to provide reliable lubrication for the oil pump, which will lead to excessive wear of the precision parts of the engine, decreased matching accuracy, and diesel mist. Problems such as poor cooling, insufficient engine power or unstable idle speed will reduce the life of the engine, and may cause oil leakage from the oil pump in severe cases.

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