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Low-temperature flow modifier for diesel oil and method for preparing same

A flow improver, low temperature technology, applied in the field of low temperature flow improver for diesel and its preparation, can solve the problems of poor susceptibility of high waxy hydrogenated diesel oil, achieve good economic and social benefits, excellent use effect, good susceptibility Effect

Inactive Publication Date: 2005-11-02
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a kind of intermediate product that utilizes the copolymer of ethylene-vinyl acetate-vinyl alcohol to be synthesized through esterification reaction in view of the poor susceptibility of diesel oil low-temperature flow improver to high-waxy hydrogenated diesel oil at home and abroad, The diesel oil low temperature flow improver and its preparation method obtained through in-situ amination reaction, the produced pour point depressant can not only effectively reduce the cold filter point and freezing point of diesel oil, improve the yield of light oil, but also have high wax content Diesel also works

Method used

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  • Low-temperature flow modifier for diesel oil and method for preparing same
  • Low-temperature flow modifier for diesel oil and method for preparing same
  • Low-temperature flow modifier for diesel oil and method for preparing same

Examples

Experimental program
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Effect test

Embodiment 1

[0019] (1) 200ml xylene is added in 500ml reactor, then add the copolymer of 78.5g ethylene-vinyl acetate-vinyl alcohol respectively, 4g dodecylbenzene sulfonic acid, 100g lauric acid, be heated to 135 ℃ of reflux, reaction After 10 hours, a mixture with an esterification degree of about 52% can be obtained, and the intermediate product is obtained by vacuum distillation under a vacuum degree of 2 kPa.

[0020] (2) above-mentioned intermediate product is added 195g aromatic hydrocarbon solvent C 9 , after stirring evenly, under cooling, add about 4g cocoamine to obtain diesel low temperature flow improver 1 of the present invention # .

Embodiment 2

[0022] (1) 180ml xylene is added in 500ml reactor, then add the copolymer of 80g ethylene-vinyl acetate-vinyl alcohol respectively, 4g dodecylbenzene sulfonic acid, 143g stearic acid, be heated to 140 ℃ of backflow, reaction After 8 hours, a mixture with an esterification degree of about 50% can be obtained, and the intermediate product is obtained by vacuum distillation under a vacuum degree of 1.5 kPa.

[0023] (2) Add the above-mentioned intermediate product to 195gC 9 , after stirring evenly, in the case of cooling, adding about 10g of hexylamine to obtain the low-temperature flow improver 2 of diesel oil of the present invention # .

Embodiment 3

[0025] (1) 200ml xylene is added in 500ml reactor, then add the copolymer of 81.5g ethylene-vinyl acetate-vinyl alcohol respectively, 4g dodecylbenzene sulfonic acid, 100g lauric acid, be heated to 135 ℃ of reflux, reaction After 12 hours, a mixture with an esterification degree of about 52% can be obtained, and the intermediate product is obtained by vacuum distillation under a vacuum degree of 1.5 kPa.

[0026] (2) above-mentioned intermediate product is added 200g aromatic hydrocarbon solvent C 9 , after stirring evenly, in the case of cooling, adding about 4g of tallow amine can obtain the diesel low temperature flow improver 3 of the present invention # .

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Abstract

The invention relates to an improver to low-temperature fluidity of fuel-oil and the method for preparation, which is characterized in that the copolymer of ethane-vinyl acetate-ethenol esterifying the aliphatic acid of C8-18 in the 130 to 160 Deg. C catalyzed by dodecylbenzene sulfonic acid or p-toluenesulfonic acid, adding aromatic solvent C9, and then adding aliphatic amine of C6-18 to put up the original position amination and prepare the copolymer of ethane-vinyl acetate-fatty acid ester of C8-18 and the compound of fatty amine ester of C6-18 of dodecylbenzene sulfonic acid. The invented product has not only good competence to wide-cut fuel-oil and mixing-refined fuel-oil, but also has excellent service effect to the fuel-oil of a high content of hardened fuel-oil and wax.

Description

technical field [0001] The invention relates to a low-temperature flow improver for diesel fuel obtained from an intermediate product synthesized by an ethylene-vinyl acetate-vinyl alcohol copolymer through an esterification reaction, and then through an in-situ amination reaction and a preparation method thereof. Background technique [0002] The low-temperature performance of diesel is an important indicator of diesel. Diesel with poor low-temperature performance will affect the normal operation of the diesel engine when the temperature is low. Use diesel low-temperature flow improver (commonly known as diesel pour point depressant) to change the low temperature of diesel. Case flow properties are the commonly used method. At present, the research of diesel low temperature flow improvement technology is relatively active at home and abroad, especially in economically developed countries, a variety of polymer type pour point depressants have been researched and developed. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10L1/18
Inventor 蒋新坤朱景利赵纯革姜明才赵建国王大明王金平徐浩
Owner PETROCHINA CO LTD