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A kind of preparation method of diesel oil antiwear agent

An anti-wear agent and diesel technology, which is applied in the field of preparation of diesel anti-wear agent, can solve the problems of metal ion residues and affecting product cleaning performance, and achieve the effect of short reaction time and high catalytic efficiency

Active Publication Date: 2017-07-28
JIANGXI SILINCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the addition of acidic or basic homogeneous catalysts during the preparation process, it is easy to cause the residue of metal ions in the product, which affects the cleaning performance of the product.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 100g of unsaturated fatty acid diesel antiwear agent, 150g of glycerin and 5g of cellulose sulfuric acid into a reaction kettle with magnetic stirring and temperature control device, raise the temperature to 120°C, and the pressure is 200Pa. The acid value was 1mgKOH / g. After the reaction, the supernatant was transferred to another reactor for cooling and separation, and a small amount of glycerin was removed to obtain 175g of diesel antiwear agent.

Embodiment 2

[0019] Add 100g of unsaturated fatty acid diesel antiwear agent, 100g of glycerin and 2g of cellulose sulfuric acid into a reaction kettle with magnetic stirring and temperature control device, raise the temperature to 110°C, and the pressure is 200Pa. The acid value was 2mgKOH / g. After the reaction, the supernatant was transferred to another reactor for cooling and separation, and a small amount of glycerin was removed to obtain 152g of diesel antiwear agent.

Embodiment 3

[0021] Add 100g of unsaturated fatty acid diesel antiwear agent, 200g of glycerin and 10g of cellulose sulfuric acid into a reaction kettle with magnetic stirring and temperature control device, raise the temperature to 130°C, and the pressure is 1000Pa. The acid value was 2mgKOH / g. After the reaction, the supernatant was transferred to another reactor for cooling and separation, and a small amount of glycerin was removed to obtain 163g of diesel antiwear agent.

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Abstract

The invention discloses a preparation method of a diesel antiwear agent, which comprises the following steps: adding glycerol, fatty acid type diesel antiwear agent, and cellulose sulfuric acid into a reaction kettle and mixing evenly, and raising the temperature to 110-130°C under vacuum conditions. After the esterification reaction is completed, the reaction liquid is cooled and separated, and the glycerin and catalyst in the lower layer are removed to obtain a fatty acid ester type diesel antiwear agent. Compared with the diesel antiwear agent prepared by adding a homogeneous catalyst in the prior art, the cellulose sulfuric acid catalyst of the present invention is insoluble in the reaction system and can be reused; dehydration under vacuum conditions promotes the rapid esterification reaction, greatly shortening the reaction time. Therefore, the preparation process of the present invention is simple, no waste water is discharged, and the requirements of environmental protection are met.

Description

technical field [0001] The invention belongs to the technical field of organic synthesis, and in particular relates to a preparation method of a diesel antiwear agent. Background technique [0002] With the increasingly stringent environmental protection regulations, the control of indicators such as sulfur content in diesel oil is becoming more and more stringent. The refinery must reduce the sulfur content through deep hydrotreating. At the same time, some natural lubricating substances in diesel oil are also removed, resulting in a significant decline in the lubricating performance of diesel oil. In order to improve the lubricity of low-sulfur diesel oil, adding diesel antiwear agent is a very effective means to improve the lubricity of diesel oil. At present, the most economical and effective oil lubrication improvers for low-sulfur diesel are three types: unsaturated fatty acid, unsaturated fatty acid ester and fatty acid amide. [0003] (1) Unsaturated fatty acid ant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/19C10L10/08
CPCC10L1/19C10L10/08
Inventor 廖维林许招会廖婧林春花钟前夏剑辉刘德永
Owner JIANGXI SILINCO
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