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High-wax thickened oil cross-linked polymer nanometer material pour point depressant and preparation method thereof

A cross-linked polymer and pour point depressant technology, which is applied in the field of polymer nanomaterial preparation, can solve the problem of poor dispersion and thermal stability of the pour point depressant product, unsatisfactory effect of high-wax and high-viscosity crude oil, and inability to ensure effective reaction time In order to achieve the effects of easy mass production, good pour point depressing effect and long acting time

Active Publication Date: 2017-07-28
山东蓝城分析测试有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For low-waxy crude oil, there are good industrial solutions such as polyethylene-vinyl acetate copolymer for point depressing, but the effect is not ideal for high-waxy and high-viscosity crude oil; Both use solution polymerization or precipitation polymerization. Solution polymerization often uses toxic substances as the polymerization medium, which is easy to cause environmental pollution, while precipitation polymerization tends to produce viscous polymers during the synthesis process. As viscous polymers continue to be produced, the reaction is interrupted, and there is no guarantee. The effectiveness of the reaction time and the molecular weight is limited, the dispersibility and thermal stability of the pour point depressant product are poor

Method used

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  • High-wax thickened oil cross-linked polymer nanometer material pour point depressant and preparation method thereof
  • High-wax thickened oil cross-linked polymer nanometer material pour point depressant and preparation method thereof
  • High-wax thickened oil cross-linked polymer nanometer material pour point depressant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1: Poly(vinylimidazole-divinylbenzene-octadecyl methacrylate, PVDS)

[0033] (1) Weigh 10g of octadecyl methacrylate, according to the molar ratio of vinylimidazole, divinylbenzene, and octadecyl methacrylate as 1:1:1, in which divinylbenzene is used as a crosslinking agent, add The amount of dispersant (polyvinylpyrrolidone) is 2% of the total mass of the monomer, added to 50 ml of ethanol, protected by nitrogen, added 0.1 g of azobisisobutyronitrile, condensed and refluxed, and reacted at 60 ° C for 4 hours.

[0034] (2) The obtained reaction solution was suction-filtered with a Buchner funnel, washed with alcohol and acetone for 3-4 times, and then vacuum-dried at 25-35°C to obtain poly(vinylimidazole-divinylbenzene-methacrylic acid octadecyl ester) pour point depressant powder.

[0035] The infrared spectrum of synthetic poly(vinylimidazole-divinylbenzene-octadecyl methacrylate) is as follows figure 1 As shown, the top is the infrared spectrum of polyoctea...

Embodiment 2

[0049] Example 2: The preparation method of poly(vinylimidazole-divinylbenzene-lauryl methacrylate), the steps are the same as in Example 1, except that octadecyl methacrylate is replaced by lauryl methacrylate.

Embodiment 3

[0050] Example 3: The preparation method of poly(vinylimidazole-divinylbenzene-tetradecyl methacrylate), the steps are the same as in Example 1, except that tetradecyl methacrylate is used instead of octadecyl methacrylate.

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Abstract

The invention discloses a method for preparing a high-wax thickened oil cross-linked polymer nanometer material pour point depressant and belongs to the field of preparation of high polymer nanoscale materials. The material comprises poly(vinyl imidazole-divinyl benzene-methylacrylic acid high carbon ester). The preparation method comprises the following steps: (1) preparing the poly(vinyl imidazole-divinyl benzene-methylacrylic acid high carbon ester); (2) treating a reaction solution of poly(vinyl imidazole-divinyl benzene-methylacrylic acid high carbon ester), so as to obtain the poly(vinyl imidazole-divinyl benzene-methylacrylic acid high carbon ester) powder. The nanometer pour point depressant disclosed by the invention is excellent in pour point depressing effect, low in cost, simple in production and clean and pollution-free in process, and the product is easy to obtain, transport and preserve. According to the experiment, the nanometer pour point depressant disclosed by the invention has the net pour point depressing amplitude of 10 DEG C on the high-wax thickened oil in Daqing Dandong station, and has the pour point depressing effect (net pour point depressing of 5 DEG C) superior to that of commercially available EVA (Ethylene-Vinyl Acetate).

Description

technical field [0001] The invention belongs to the technical field of polymer nanomaterial preparation, and in particular relates to a high-wax heavy oil crosslinked polymer nanomaterial pour point depressant and a preparation method thereof. Background technique [0002] The crude oil produced in my country is mainly waxy high pour point oil and heavy oil rich in colloids and asphaltenes. As major domestic oil fields enter the middle and late stages of development, the output and quality of crude oil are declining, and the proportion of high-condensation and high-viscosity crude oil is gradually increasing. [0003] With the increasing scarcity of oil resources, the abundant reserves of heavy oil have aroused widespread concern. my country is rich in heavy oil resources, about 2.5×10 10 tons, accounting for 28% of the total oil resources. However, due to the large amount of paraffin, colloid and asphaltenes contained in heavy oil, it has significant characteristics such...

Claims

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Application Information

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IPC IPC(8): C08F226/06C08F220/58C08F212/36C08F220/18C09K8/588
CPCC09K8/588C08F212/36C08F220/18C08F220/58C08F226/06C08F220/1818C08F220/585
Inventor 孙芸芸于帅徐清忠李赛钰吕知霖
Owner 山东蓝城分析测试有限公司
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