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A kind of method for preparing aviation fuel antiwear agent

A technology for aviation fuel and antiwear agent, which is applied in the preparation of sulfonic acid, the preparation of carboxylate, chemical instruments and methods, etc., can solve the problems of increased corrosion of jet fuel, unstable product quality, affecting the color index of aviation fuel, etc.

Active Publication Date: 2017-10-17
PLA AIR FORCE OIL MATERIAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the anti-wear agent added to domestic aviation fuel is T1602. The effective component of T1602 is naphthenic acid. Increased acidity also leads to increased corrosivity of jet fuel
And the chromaticity of T1602 additive is relatively deep, which affects the color index of aviation fuel. In addition, the product quality of T1602 is unstable

Method used

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  • A kind of method for preparing aviation fuel antiwear agent
  • A kind of method for preparing aviation fuel antiwear agent
  • A kind of method for preparing aviation fuel antiwear agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] To prepare mixed fatty acids:

[0060] (1) Accurately weigh 100 g of sunflower oil in a 250 mL three-neck flask.

[0061] (2) Add 40g KOH, 80g deionized water (or 40ml 50% KOH solution) and 160ml 95% ethanol solution.

[0062] (3) Stir and reflux saponification for 2 hours in a glycerin bath at 90°C to obtain a saponification liquid (take a small amount of saponification liquid and dissolve it in water, and if there is no oil layer on standing, the saponification is complete).

[0063] (4) After the saponified solution is cooled to room temperature, add dilute hydrochloric acid to acidify to pH=2-3, and extract the oil phase with a small amount of petroleum ether.

[0064] (5) After acidification, wash with deionized water until neutral, and separate the liquids. The upper oily phase was dried with anhydrous sodium sulfate and left to stand overnight.

[0065] (6) Remove anhydrous sodium sulfate by filtration.

[0066] (7) Petroleum ether was removed by vacuum rotary ...

Embodiment 2

[0068] Synthesis of C36 unsaturated fatty acid dimers:

[0069] (1) Place the mixed fatty acid obtained in Example 1 in the autoclave as a raw material, then add 12% catalyst and 1% auxiliary agent, based on the mass of the above mixed fatty acid, install the autoclave, and check the airtightness properties, wherein the catalyst is activated clay, and the auxiliary agent is lithium carbonate;

[0070] (2) purge the autoclave three times with nitrogen, discharge the air in the autoclave, then fill the autoclave with nitrogen to 2.0MPa, and close the autoclave inlet valve;

[0071] (3) be heated to reaction temperature 240 ℃ under the condition of stirring, promptly start counting when reaching reaction temperature, as reaction zero point;

[0072] (4) After 6 hours of reaction, stop heating, place the autoclave still body in cold water, make the still body rapidly drop to room temperature, open the still, and pour out the reaction product;

[0073] (5) Dilute the crude produc...

Embodiment 3

[0078] Synthesis of C36 unsaturated fatty acid dimers:

[0079] (1) Put linoleic acid in the autoclave as raw material, then add 12% catalyst and 1% auxiliary agent, based on the mass of the above-mentioned linoleic acid, install the autoclave, and check the air tightness, wherein The catalyst is activated clay, and the auxiliary agent is lithium carbonate;

[0080] (2) purge the autoclave three times with nitrogen, discharge the air in the autoclave, then fill the autoclave with nitrogen to 2.0MPa, and close the autoclave inlet valve;

[0081] (3) be heated to reaction temperature 230 ℃ under the condition of stirring, promptly start counting when reaching reaction temperature, as reaction zero point;

[0082] (4) After 6 hours of reaction, stop heating, place the autoclave still body in cold water, make the still body rapidly drop to room temperature, open the still, and pour out the reaction product;

[0083] (5) Dilute the crude product with an equal volume of petroleum ...

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Abstract

The present invention relates to a kind of method for preparing the anti-wear agent of aviation fuel, the method comprises: (A) the preparation of mixed fatty acid; (B2) the synthetic of C36 unsaturated fatty acid dimer, comprise with linoleic acid or step (A) The mixed fatty acid of gained is placed in autoclave as raw material, then add 9-15% ionic liquid as catalyst, based on the mass meter of linoleic acid or above-mentioned mixed fatty acid, install autoclave, and check airtightness, catalyst's The usage amount is preferably 10-13%, and the ionic liquid is ionic liquid I or ionic liquid II having the following structural formula,

Description

technical field [0001] The invention relates to a method for preparing an anti-wear agent for aviation fuel, in particular to a method for preparing an anti-wear agent for unsaturated fatty acid dimer type aviation fuel. Background technique [0002] At present, the anti-wear agent added to domestic aviation fuel is T1602. The effective component of T1602 is naphthenic acid. Increased acidity also leads to increased corrosivity of jet fuel. And the chromaticity of T1602 additive is relatively deep, which affects the color index of aviation fuel. In addition, the product quality of T1602 is unstable. [0003] In the production process of aviation fuel, acid-base refining, hydrofining or hydrocracking are mainly used, so that the natural anti-wear components in the distillate are removed, resulting in a decrease in the anti-wear performance of aviation fuel, so anti-wear agents must be added to aviation fuel , to prevent severe wear of the fuel system. Contents of the inve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10M129/42C07C57/26C07C57/13C07C51/353B01J31/26C07C309/14C07C303/22C07D233/60
Inventor 都长飞刘多强赵升红顾鹏翔
Owner PLA AIR FORCE OIL MATERIAL RES INST
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