Preparation process of novel ester type anti-wear agent for diesel oil

A preparation process and anti-wear agent technology, applied in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc., can solve the problems of excessive diesel acidity, affecting the performance of diesel engines, etc., and achieve good anti-emulsification and anti-wear properties. Good, avoid the effect of emulsification

Inactive Publication Date: 2019-11-29
CNOOC TIANJIN CHEM RES & DESIGN INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, when the dosage of acid type antiwear agent used in my country is 200mg / kg and 300mg / kg, the acidity of diesel oil will increase by 3-4mgKOH / 100mL and 4-6mgKOH / 100mL respectively. When it is too large, there is a risk that the acidity of the added diesel oil exceeds the standard (the standard is not more than 7mgKOH / 100mL)
In addition, since the acid value of diesel oil added with acid-type anti-wear agent is still relatively large, when it is in contact with carbon steel for a long time, it will affect the performance of the diesel engine due to corrosion problems

Method used

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  • Preparation process of novel ester type anti-wear agent for diesel oil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1) Add the molecular sieve-supported solid superacid catalyst to ethylene glycol, then add the catalyst-added ethylene glycol to the reaction kettle, and add the water-carrying agent xylene, start stirring, and put the above mixture under a nitrogen atmosphere. Heated to 125°C, then added linoleic acid to carry out esterification reaction at 125°C for 8.0h. Wherein the ratio of ethylene glycol to linoleic acid is 0.9, the molecular sieve-supported solid superacid catalyst addition is 15% of the total mass of reactants, and the water-carrying agent xylene is 130% of the total mass of reactants.

[0026] 2) After the reaction is completed, the temperature is naturally lowered. When the temperature drops to 60° C., the xylene is extracted and removed under reduced pressure, and then the product is filtered to remove the molecular sieve-supported solid catalyst.

[0027] 3) After the product is lowered to room temperature, the remaining trace moisture and inorganic impuriti...

Embodiment 2

[0030] 1) Add the molecular sieve-supported solid superacid catalyst to 1,3-propanediol, then add the catalyst-added 1,3-propanediol to the reaction kettle, and add the water-carrying agent xylene, start stirring under nitrogen protection atmosphere , the above mixture was heated to 128°C, and then linoleic acid was added to carry out esterification reaction at 128°C for 8.5h. Wherein the ratio of 1,3-propanediol to linoleic acid is 0.95, the amount of molecular sieve supported solid superacid catalyst is 20% of the total mass of reactants, and the water-carrying agent xylene is 140% of the total mass of reactants.

[0031] 2) After the reaction is completed, the temperature is naturally lowered. When the temperature drops to 60° C., the xylene is extracted and removed under reduced pressure, and then the product is filtered to remove the molecular sieve-supported solid catalyst.

[0032] 3) After the product is lowered to room temperature, the remaining trace moisture and ino...

Embodiment 3

[0035] 1) Add the molecular sieve-supported solid superacid catalyst to the glycerol, then add the catalyst-added glycerol to the reaction kettle, and add the water-carrying agent xylene, start stirring, and put the above mixture under a nitrogen atmosphere. Heated to 132°C, then added linoleic acid to carry out esterification reaction at 132°C for 9.0h. Wherein the ratio of glycerol to linoleic acid is 1.0, the molecular sieve-supported solid superacid catalyst addition is 28% of the total mass of reactants, and the water-carrying agent xylene is 150% of the total mass of reactants.

[0036] 2) After the reaction is completed, the temperature is naturally lowered. When the temperature drops to 60° C., the xylene is extracted and removed under reduced pressure, and then the product is filtered to remove the molecular sieve-supported solid catalyst.

[0037] 3) After the product is lowered to room temperature, the remaining trace moisture and inorganic impurities in the reactio...

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Abstract

The invention provides a preparation process of a novel ester type anti-wear agent for diesel oil. The preparation process comprises the following steps: in a nitrogen protection atmosphere, carryingout an esterification reaction on polyol and straight-chain fatty acid in a molar ratio of 0.9-1.1 at 125-140 DEG C for 8-10 hours in the presence of a water-carrying agent and a molecular sieve supported catalyst; carrying out natural cooling after the esterification reaction is finished, and when a temperature decreases to 58-62 DEG C, carrying out extraction under a reduced-pressure condition to remove the water-carrying agent, and then filtering the product to filter out the molecular sieve supported solid catalyst; and after a product system is cooled to room temperature, removing residual trace moisture and inorganic impurities in the reaction product, adding a branched chain polyether type demulsifying agent, and carrying out sufficient mixing under stirring to obtain an ester typeanti-wear agent product for diesel oil. The ester type anti-wear agent for diesel oil prepared by using the method disclosed by the invention has the advantages of extremely low acid value, good anti-wear performance, extremely low condensation point and extremely good demulsibility.

Description

technical field [0001] The invention relates to a preparation process and application of a diesel antiwear agent in the field of refined oil additives. Background technique [0002] As countries around the world pay more and more attention to environmental protection issues, the environmental protection and automotive industries have put forward higher and higher requirements for diesel quality indicators, and correspondingly, the requirements for the content of nitrogen, sulfur, and aromatics in diesel product indicators have also become more stringent. At the same time, the national VI standard for gasoline and diesel for vehicles, which has been fully implemented in my country since January 1, 2019, has also imposed stricter restrictions on the content of polycyclic aromatic hydrocarbons in diesel, dropping from 11% to 7%, a drop of 36%. , stricter than the EU 8% standard. [0003] The reduction of sulfur and aromatic content will directly or indirectly lead to the deteri...

Claims

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Application Information

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IPC IPC(8): C10L1/19C10L10/08
CPCC10L1/19C10L10/08
Inventor 赵迎秋黄占凯赵洪魏清张晓行董广前王会
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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