Water-soluble crude oil pour point depressant and its preparation method and application

A crude oil pour point depressant and water-soluble technology, applied in the field of water-soluble crude oil pour point depressant and its preparation, can solve the problems of high cost, complexity, difficult injection, etc., and achieve the effects of environmental friendliness, simple operation and good compatibility

Active Publication Date: 2021-06-25
SHANDONG XINGANG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention proposes a water-soluble crude oil pour point depressant and its preparation method and application. The water-soluble crude oil pour point depressant can improve the fluidity of high freezing point crude oil in the process of crude oil exploitation and transportation, and solve the problems in crude oil exploitation, Difficult, complex and costly problems to inject into the transportation process

Method used

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  • Water-soluble crude oil pour point depressant and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0029] (1) Dissolve 9.81g of maleic anhydride in 39.24g of acetone, put it in a reaction flask, dissolve 28.55g of rosinamine in 114.20g of petroleum ether, and slowly add it dropwise to maleic anhydride in an ice-water bath. After the addition is complete, stir and reflux at 60°C for 2 hours, filter, and recrystallize with acetone to obtain a maleic anhydride derivative;

[0030] (2) Add 36.16g of maleic anhydride derivatives, 16.23g of tetradecyl acrylate, and 51.79g of toluene obtained above into the reaction flask, and pass N 2 Protection; slowly add 0.24g of dibenzoyl peroxide dropwise, and react at a constant temperature for 5 hours at 70°C. After the reaction, cool to about 40°C; dissolve 20.72g of 2-acrylamido-2-methylpropanesulfonic acid into 20.72g of N,N-dimethylformamide, then pour it into the reaction flask, continue to dropwise add 0.49g of dibenzoyl peroxide, react at a constant temperature at 70°C for 7 hours, and add 0.58g of hydroquinone at the end of the rea...

Embodiment 2

[0034] (1) Dissolve 9.81g of maleic anhydride in 39.24g of acetone, place in a reaction flask, dissolve 22.84g of rosinamine in 91.36g of petroleum ether, and slowly add it dropwise to maleic anhydride in an ice-water bath. After completion, stir and reflux at 70°C for 2 hours, filter, and recrystallize with acetone to obtain maleic anhydride derivatives;

[0035] (2) Add 31.21g of maleic anhydride derivatives, 23.72g of hexadecyl acrylate and 56.37g of xylene obtained above into the reaction flask, and pass N 2 Protection; slowly add 0.46g of azobisisobutyronitrile dropwise, and react at a constant temperature at 80°C for 6h. After the reaction, cool to about 40°C; dissolve 20.72g of 2-acrylamido-2-methylpropanesulfonic acid into 20.72g of N,N-dimethylacetamide, then pour it into the reaction flask, continue to dropwise add 0.47g of azobisisobutyronitrile, and react at a constant temperature of 80°C for 8 hours, and add 0.77g of hydroquinone after the reaction is completed. ...

Embodiment 3

[0039] (1) Dissolve 9.81g of maleic anhydride in 39.24g of acetone, put it in a reaction flask, dissolve 28.55g of rosinamine in 114.20g of petroleum ether, and slowly add it dropwise to maleic anhydride in an ice-water bath. After completion, stir and reflux for 2 hours at 80°C, filter, and then recrystallize with acetone to obtain maleic anhydride derivatives;

[0040](2) Add 36.16g of maleic anhydride derivatives, 32.46g of tetradecyl acrylate, and 95.06g of toluene obtained above into the reaction flask, and pass N 2 Protection: Slowly add 0.62g of azobisisobutyronitrile dropwise, and react at a constant temperature at 90°C for 6h. After the reaction, cool to about 50°C; dissolve 31.05g of 2-acrylamido-2-methylpropanesulfonic acid into 37.26g of N,N-dimethylacetamide, then pour it into the reaction flask, continue to dropwise add 0.92g of azobisisobutyronitrile, react at a constant temperature of 90°C for 5 hours, and add 1.32g of hydroquinone at the end of the reaction, ...

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Abstract

The invention provides a water-soluble crude oil pour point depressant and its preparation method and application, which belong to the technical field of petrochemical industry. The water-soluble pour point depressant is formed by copolymerization of maleic anhydride derivatives, higher alcohol acrylate and 2-acrylamido-2-methylpropanesulfonic acid. The raw material of the product of the present invention is easy to obtain, and the pour point depressing effect is remarkable. Under the condition of the product dosage of 100ppm, the pour point depressing range can reach more than 10°C; Certain corrosion and scale inhibition effects.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, transportation and chemical industry, and relates to a water-soluble crude oil pour point depressant and its preparation method and application. Background technique [0002] Most of my country's crude oil is highly waxy crude oil, with a wax content as high as 15%-37%, and some crude oil wax content is as high as 40%. Highly waxy crude oil has a high freezing point and poor low-temperature fluidity, which is easy to clog pipelines due to wax precipitation, which brings many difficulties to crude oil extraction, transportation and processing. At present, heat treatment and chemical pour point depressant are mainly used. Chemical pour point depressants can reduce the freezing point and viscosity of crude oil, improve the flow of crude oil, and reduce the energy consumption for heating crude oil pipelines, which has great economic benefits. [0003] At present, the pour point depre...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F222/40C08F220/18C08F220/58C09K8/524C09K8/588
CPCC08F220/18C08F222/40C09K8/524C09K8/588C09K2208/32
Inventor 杨姗丁锡刚齐书磊吴庆凯李金平胡朋朋姜力华秦玉斌祝东明
Owner SHANDONG XINGANG CHEM
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