A kind of preparation method of high-efficiency diesel oil pour point depressant

A diesel oil pour point depressant, high-efficiency technology, applied in the field of oil additives, can solve the problems of small freezing point and cold filter point range, single polymer type, little effect of diesel oil, etc., to reduce the freezing point of diesel oil, and the synthesis method is simple , excellent pour point depressing effect

Active Publication Date: 2019-03-19
ANHUI POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, most diesel oil pour point depressants in the market have a single type of polymer in the components, and the range of lowering the freezing point and cold filter point is too small; occasionally there are several polymers, but their compounding is not ideal, and the scope of application is relatively small. Narrow, little effect on many diesels

Method used

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  • A kind of preparation method of high-efficiency diesel oil pour point depressant
  • A kind of preparation method of high-efficiency diesel oil pour point depressant

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preparation example Construction

[0023] The present invention proposes a kind of preparation method of high-efficiency diesel oil pour point depressant, comprises following preparation steps:

[0024] Step 1. Weigh 1-2 parts of wisteria flowers, crush them by airflow, pass through 80-100 mesh sieves, add them into 15-20 parts of ethanol, ultrasonically extract for 1-2 hours, filter with nanofiltration membrane, and take the filtrate to obtain plant extracts;

[0025] Step 2: Add 50 to 60 parts of ethyl acetate to the plant extract obtained in the above step 1, stir and heat up to 60 to 70°C; then add 5 to 8 parts of tetrahydrofurfuryl methacrylate, 6 ~8 parts of trimethylolpropane triacrylate, 3~5 parts of ethoxylated trimethylolpropane triacrylate and 15~20 parts of acrylic acid; then under the stirring condition of 100~200r / min, drop Add 0.1-0.5 parts of methyl ethyl ketone peroxide, stir and react at a speed of 100-200r / min for 3-5 hours, then add 2-3 parts of aminotrimethylene phosphonic acid, Stir at a...

Embodiment 1

[0028] On the basis of specific implementation, the preparation method of the high-efficiency diesel pour point depressant of the present embodiment comprises the following preparation steps:

[0029] Step 1. Weigh 1 part of wisteria flower, crush it by airflow, pass it through an 80-mesh sieve, add it to 15 parts of ethanol, extract it ultrasonically for 1 hour, filter it with a nanofiltration membrane, and take the filtrate to obtain a plant extract;

[0030] Step 2: Add 50 parts of ethyl acetate to the plant extract obtained in the above step 1, stir and heat up to 60°C; then add 5 parts of tetrahydrofurfuryl methacrylate and 6 parts of trimethylol Propane triacrylate, 3 parts of ethoxylated trimethylolpropane triacrylate and 15 parts of acrylic acid; then under stirring condition of 100r / min, 0.1 part of methyl ethyl ketone peroxide was added dropwise at a speed of 100r / min After stirring and reacting for 3 hours, add 2 parts of aminotrimethylene phosphonic acid, and stir ...

Embodiment 2

[0033] On the basis of specific implementation, the preparation method of the high-efficiency diesel pour point depressant of the present embodiment comprises the following preparation steps:

[0034] Step 1. Weigh 2 parts of wisteria flowers, crush them by airflow, pass through a 100-mesh sieve, add them to 20 parts of ethanol, extract them ultrasonically for 2 hours, filter them with a nanofiltration membrane, and take the filtrate to obtain a plant extract;

[0035] Step 2: Add 60 parts of ethyl acetate to the plant extract obtained in the above step 1, stir and heat up to 70°C; then add 8 parts of tetrahydrofurfuryl methacrylate and 8 parts of trimethylol Propane triacrylate, 5 parts of ethoxylated trimethylolpropane triacrylate and 20 parts of acrylic acid; then under 200r / min stirring condition, dropwise add 0.5 part of methyl ethyl ketone peroxide, with 200r / min rotating speed After stirring and reacting for 5 hours, add 3 parts of aminotrimethylene phosphonic acid, and...

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Abstract

The invention relates to a preparation method of an efficient diesel pour point depressant, belonging to the technical field of oil additives. The preparation method comprises the following preparation processes: mixing the following raw materials: wisteria flower, hydrolyzed polymaleic anhydride, a maleic anhydride grafted vinyl acetate copolymer, amino trimethylene phosphonic acid, tetrahydrofurfuryl methacrylate and the like according to a certain proportion, extracting, stirring for carrying out a reaction, carrying out condensation, and the like so as to obtain the efficient diesel pour point depressant. The efficient diesel pour point depressant prepared by the method is excellent in pour point depression effect, and can obviously reduce the diesel pour point, improve low temperature fluidity and improve the diesel quality. The product prepared by the method is wide in applicability, good in storage safety and good in economic benefit, thus having a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of oil additives, and in particular relates to a preparation method of a high-efficiency diesel oil pour point depressant. Background technique [0002] Diesel is a light petroleum product, a complex hydrocarbon mixture with about 10 to 22 carbon atoms. Diesel oil is mainly prepared from diesel fractions produced by crude oil distillation, catalytic cracking, thermal cracking, hydrocracking, petroleum coking, etc.; it can also be produced from shale oil processing and coal liquefaction. Diesel oil can be divided into light diesel oil with a boiling point of about 180-370°C and heavy diesel oil with a boiling point of about 350-410°C. As a fuel, diesel can be widely used in large vehicles, railway locomotives and ships. [0003] For a long time, the demand for diesel in my country has been very large, and increasing diesel production has always been an important task for my country's oil refining enterprise...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10L1/14C10L10/14
CPCC10L1/14C10L10/14
Inventor 朱逸伟施一新吴之传陶庭先朱贤东
Owner ANHUI POLYTECHNIC UNIV
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