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Binary polymer diesel pour point depressant, and preparation method and application thereof

A diesel pour point depressant and polymer technology, used in the petroleum industry, fuel additives, liquid carbon-containing fuels, etc., can solve the problems of low dispersion, poor general applicability, and low susceptibility to different diesel fuels. The effect of broadening distillation range and improving low temperature flow properties

Active Publication Date: 2020-06-19
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although there are many types of pour point depressants used to improve low-temperature fluidity of diesel oil and all have good pour point depressant effects, most of them have insufficient filter depressant effect, poor universal applicability, low susceptibility to different diesel oils, low dispersion, Unclear mechanism of pour point depressing, etc.

Method used

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  • Binary polymer diesel pour point depressant, and preparation method and application thereof
  • Binary polymer diesel pour point depressant, and preparation method and application thereof
  • Binary polymer diesel pour point depressant, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Add 10.33g (0.12mol) of methacrylic acid, 21.44g (0.1mol) of tetradecyl alcohol, and 0.192g of hydroquinone to a three-necked flask equipped with a condenser, a water separator, a thermometer, and a magnetic stirring device , 50ml toluene, heat up to 60°C to completely dissolve myristyl alcohol in toluene, then quickly add 0.254g catalyst p-toluenesulfonic acid into the three-necked flask, heat up to 110-120°C and react for 5 hours, when observed When the amount of water in the water separator is equivalent to the theoretical value, the system is in a light yellow transparent liquid state, and the reaction is terminated. After the reaction was completed, the obtained reaction solution was distilled under reduced pressure, and then alkali washing and water washing were carried out after removing the solvent. The alkali washing was washed with a 5% NaOH solution to remove p-toluenesulfonic acid and unreacted methyl alcohol. Acrylic acid generally needs to be washed 3-...

Embodiment 2

[0033] The difference from Example 1 is that the 21.44g (0.1mol) tetradecyl alcohol, 0.254g catalyst p-toluenesulfonic acid added in the step (1) are replaced by adding 24.24g cetyl alcohol, 0.277g catalyst p-toluenesulfonic acid, The 14.13g (0.05mol) tetradecyl methacrylate, 0.15g benzoyl peroxide added in the step (3) were replaced by adding 15.53g (0.05mol) hexadecyl methacrylate, 0.184g benzoyl peroxide Acyl, all the other are with embodiment 1.

Embodiment 3

[0035] The difference from Example 1 is that the 21.44g (0.1mol) tetradecyl alcohol, 0.254g catalyst p-toluenesulfonic acid added in the step (1) are replaced by adding 27.05g octadecyl alcohol, 0.299g catalyst p-toluenesulfonic acid, The 14.13g (0.05mol) tetradecyl methacrylate, 0.15g benzoyl peroxide added in the step (3) are replaced by adding 16.9g (0.05mol) octadecyl methacrylate, 0.198g benzoyl peroxide Acyl, all the other are with embodiment 1.

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Abstract

The invention relates to a binary polymer diesel pour point depressant, and a preparation method and an application thereof. The preparation method for the diesel pour point depressant comprises the following steps: 1) adding methacrylic acid, higher alcohol and a polymerization inhibitor into a solvent, carrying out heating to 55-65 DEG C until the methacrylic acid, the higher alcohol and the polymerization inhibitor are fully dissolved, then adding a catalyst, and carrying out a catalytic reaction; 2) adding cyclohexylamine into triethylamine, then carryin gout heating to 55-65 DEG C, then adding methacryloyl chloride, and carrying out a reaction for 1-3 hours; and 3) adding high-carbon methacrylate and N-cyclohexylmethacrylamide into the solvent, then adding an initiator, and carrying out a polymerization reaction. Compared with the prior art, the binary polymer diesel pour point depressant provided by the invention has novel structure, can effectively improve the low-temperature flowing property of diesel, has good effect in the aspect of lowering a condensation point and a cold filter plugging point, and can enable the condensation point to be lowered by 10-18 DEG C and the cold filter plugging point to be lowered by 0-9 DEG C.

Description

technical field [0001] The invention belongs to the technical field of diesel pour point depressant, and relates to an amine binary polymer diesel pour point depressant, a preparation method and application thereof. Background technique [0002] With the rapid development of the economy, the number of vehicles fueled by diesel continues to increase, and the production and consumption of diesel worldwide have surpassed that of gasoline and are showing a growing trend. The application of diesel engines in countries all over the world is increasing. In developing countries, diesel is mainly used in trucks, while many passenger cars in developed countries also use diesel engines. In recent years, according to domestic conditions, my country will vigorously develop medium and heavy-duty trucks. Diesel is a complex hydrocarbon mixture. Under low temperature conditions, normal alkanes will become wax crystals and precipitate from diesel oil. With the continuous precipitation of w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/54C10L1/236C10L10/14
CPCC08F220/18C10L1/2364C10L10/14
Inventor 薛原殷素雅朱贤金东元韩生蔺华林李欣杨太顺
Owner SHANGHAI INST OF TECH
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