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A tall oil fatty acid compound antiwear agent for ultra-low sulfur diesel oil

A technology of tall oil fatty acid and ultra-low-sulfur diesel oil, which is applied in the field of diesel antiwear agents, can solve the problems of destroying the stability of colloidal particles, reducing engine performance, and corrosiveness of friction pairs, so as to achieve smooth contact surfaces of friction pairs and reduce friction Wear and prolong life effects

Inactive Publication Date: 2020-05-29
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, carboxylic acid has a certain acidity, and the carboxylic acid adsorbed on the metal surface has certain corrosiveness to the friction pair.
In addition, the fatty acid antiwear agent is very easy to undergo coordination exchange reaction with the alkaline detergent and dispersant in diesel oil, and the carboxylic acid anion replaces the hydrophobic group in the dispersant, which destroys the stability of the colloidal particles and forms a complex coagulate that is easy to precipitate. Glue, clogging the filter, reducing the performance of the engine, causing increased wear and negative effects

Method used

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  • A tall oil fatty acid compound antiwear agent for ultra-low sulfur diesel oil
  • A tall oil fatty acid compound antiwear agent for ultra-low sulfur diesel oil
  • A tall oil fatty acid compound antiwear agent for ultra-low sulfur diesel oil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] In this implementation, the tall oil fatty acid compound antiwear agent for ultra-low sulfur diesel oil is composed of tall oil fatty acid and 8-hydroxyquinoline, the content of tall oil fatty acid is 60wt.%, and the content of 8-hydroxyquinoline is 40wt.%.

[0026] The following experiments illustrate the diesel lubricating performance and lubrication stability of the compound antiwear agent, as well as the effect of the compound antiwear agent on other physical and chemical properties of diesel.

[0027] 1. Lubrication performance inspection

[0028] Since the wear scar diameter of ultra-low sulfur 0# diesel oil is 630 μm without adding any antiwear agent, which is between 601 and 700 μm, according to the requirements of the diesel antiwear agent Q / SHCG 57-2014 technical specification for this diesel oil The amount of added anti-wear agent should not exceed 200μg / g. Therefore, according to the requirements of Q / SHCG 57-2014, add 200 μg / g of the compound antiwear age...

Embodiment 2

[0052] In this implementation, the tall oil fatty acid compound antiwear agent for ultra-low sulfur diesel oil is composed of tall oil fatty acid and 8-hydroxyquinoline, the content of tall oil fatty acid is 50wt.%, and the content of 8-hydroxyquinoline is 50wt.%.

[0053] Test the lubricating performance of the composite antiwear agent provided by the present embodiment according to the lubricating performance investigation method in Example 1, the result shows that when adding 200 μ g / g tall oil fatty acid, the wear scar diameter on the test piece iron ball is 362 μm, when adding 200 μg / g of the compound antiwear agent in Example 2, the wear scar diameter on the iron ball of the upper test piece was reduced to 280 μm, compared with the situation of adding 200 μg / g tall oil fatty acid, the wear scar diameter The drop was 22.7%.

Embodiment 3

[0055] In this implementation, the tall oil fatty acid compound antiwear agent for ultra-low sulfur diesel oil is composed of tall oil fatty acid and 8-hydroxyquinoline, the content of tall oil fatty acid is 40wt.%, and the content of 8-hydroxyquinoline is 60wt.%.

[0056] Test the lubricating performance of the composite antiwear agent provided by the present embodiment according to the lubricating performance investigation method in Example 1, the result shows that when adding 200 μ g / g tall oil fatty acid, the wear scar diameter on the test piece iron ball is 362 μm, when adding 200 μg / g of the compound antiwear agent in Example 2, the wear scar diameter on the iron ball of the upper test piece was reduced to 283 μm, compared with the situation of adding 200 μg / g tall oil fatty acid, the wear scar diameter The decline was 21.8%.

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Abstract

The invention provides a tall oil fatty acid compound anti-wear agent for ultra-low-sulfur diesel. The tall oil fatty acid compound anti-wear agent is prepared from 40 to 60 percent by weight of talloil fatty acid and 60 to 40 percent by weight of quinoline type nitrogen-containing anti-wear agent, wherein the quinoline type nitrogen-containing anti-wear agent is preferably hydroxyquinoline. By adopting the tall oil fatty acid compound anti-wear agent for the ultra-low-sulfur diesel, the problems of acid corrosion and filter screen blockage due to separate use of the tall oil fatty acid compound anti-wear agent can be relieved effectively, and meanwhile the lubricating performance is improved remarkably.

Description

technical field [0001] The invention belongs to the field of diesel antiwear agents and relates to a tall oil fatty acid compound antiwear agent for ultra-low sulfur diesel oil. Background technique [0002] The sulfur in diesel will lead to catalyst poisoning during the processing of diesel, and the SO produced during the use of diesel 2 It will pollute the environment and significantly promote the generation of CH and CO in diesel engine emissions, especially for inhalable particulate matter. With the increasing environmental protection of human beings, higher requirements are put forward for the quality of diesel oil. For example, the relevant environmental protection regulations in Europe and the United States require that the sulfur content in diesel oil should be lower than 10ppm by 2017. Sulfur compounds in diesel can be effectively removed through harsh hydrogenation process to make diesel fuel cleaner. However, low-sulfur diesel has brought new problems while redu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/188C10L1/232C10L10/08
CPCC10L1/1888C10L1/232C10L10/08
Inventor 李玉宝张利胡震
Owner SICHUAN UNIV