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Comb-shaped polymer for crude oil pour point depressants, preparation method of polymer and application of polymer

A comb-shaped polymer and crude oil pour point depressant technology, applied in drilling compositions, chemical instruments and methods, etc., can solve the problems of narrow application range, complicated preparation process, lack of universality, etc., and achieve high efficiency and high efficiency. The effect of safe delivery

Active Publication Date: 2018-01-23
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the process of realizing the present invention, the inventor found that there are at least the following problems in the prior art: the existing crude oil pour point depressant has a narrow scope of application and does not have universal applicability
Moreover, the preparation process of the existing crude oil pour point depressant is relatively complicated, and the structure controllability is poor

Method used

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Examples

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Effect test

preparation example Construction

[0028] In the first aspect, the embodiment of the present invention provides a method for preparing a comb polymer for crude oil pour point depressant, which specifically includes the following steps:

[0029] Step 1. Add higher alcohol acrylate, perfluoroalcohol acrylate, dicyclopentadiene, first initiator and first solvent into the reaction vessel, and react at 60℃~80℃ for more than 10 hours under the protection of inert gas to obtain acrylic acid Higher alcohol ester-perfluoroalcohol acrylate-dicyclopentadiene terpolymer.

[0030] Among them, the molar ratio of higher alcohol acrylate, perfluoroalcohol acrylate, and dicyclopentadiene is 1:(0.8~1.2):(0.8~1.2); based on higher alcohol acrylate, perfluoroalcohol acrylate, bicyclic The total mass of pentadiene, the first initiator and the first solvent is 100%, the added amount of the first initiator is 0.4wt% to 0.6wt%, and the added amount of the first solvent is 8wt% to 15wt%.

[0031] The number of carbon atoms of the higher alco...

Embodiment 1

[0061] This embodiment provides a method for preparing a comb polymer for crude oil pour point depressant. The comb polymer is mainly based on a higher alcohol acrylate-perfluoroalcohol acrylate-dicyclopentadiene terpolymer Chain, a comb polymer with polyvinyl acetate as the side chain, wherein the higher alcohol acrylate is seven-carbon alcohol acrylate (that is, the higher alcohol used to synthesize higher alcohol acrylate has 70 carbon atoms) ), the perfluoroalcohol acrylate is 1H, 1H, 2H, 2H-perfluorodecyl acrylate (that is, the fluoroalcohol used to synthesize the perfluoroalcohol acrylate has 10 carbon atoms).

[0062] The specific preparation method includes the following steps:

[0063] Step 101, add 5g heptacosyl acrylate, 2.63g 1H, 1H, 2H, 2H-perfluorodecyl acrylate, 0.63g dicyclopentadiene, 0.0413g azobisisobutyronitrile into a 250ml pressure bottle (AIBN) and 82.6ml of toluene, then put a magnet in the pressure bottle, and place the pressure bottle in a water bath at 7...

Embodiment 2

[0068] This embodiment provides a method for preparing a comb polymer for crude oil pour point depressant. The comb polymer is mainly based on a higher alcohol acrylate-perfluoroalcohol acrylate-dicyclopentadiene terpolymer Chain, a comb polymer with polyvinyl acetate as the side chain, wherein the higher alcohol acrylate is forty carbon alcohol acrylate (that is, the higher alcohol used to synthesize higher alcohol acrylate has 40 carbon atoms) ), the perfluoroalcohol acrylate is 1H, 1H, 2H, 2H-perfluorodecyl acrylate (that is, the fluoroalcohol used to synthesize the perfluoroalcohol acrylate has 10 carbon atoms).

[0069] The specific preparation method includes the following steps:

[0070] Step 201: Add tetracosyl acrylate, 1H, 1H, 2H, 2H-perfluorodecyl acrylate, dicyclopentadiene, azobisisobutyronitrile (AIBN) and toluene into a 250ml pressure bottle, Then put a magnet into the pressure bottle, and place the pressure bottle in a 70°C water bath under the protection of nitrog...

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Abstract

The invention discloses a comb-shaped polymer for crude oil pour point depressants, a preparation method of the polymer and an application of the polymer, and belongs to the technical field of preparation of polymers and crude oil pipeline transportation. The preparation method includes the steps: a, adding acrylic high-carbon alcohol ester, acrylic perfluor alcohol ester, dicyclopentadiene, firstinitiating agents and first solvents into a reaction vessel, and performing reaction to obtain an acrylic high-carbon alcohol ester-acrylic perfluor alcohol ester-dicyclopentadiene terpolymer; b, adding second solvents, the acrylic high-carbon alcohol ester-acrylic perfluor alcohol ester-dicyclopentadiene terpolymer acquired in the step a, second initiating agents, free radical concentration conditioning agents and vinyl acetate into the reaction vessel, and performing reaction to obtain the comb-shaped polymer which takes the acrylic high-carbon alcohol ester-acrylic perfluor alcohol ester-dicyclopentadiene terpolymer as a main chain and takes polyvinyl acetate as a side chain. The comb-shaped polymer acquired by the preparation method can effectively reduce a freezing point of crude oil, and exploitation and transportation of the crude oil are facilitated.

Description

Technical field [0001] The invention relates to the technical field of polymer preparation and crude oil pipeline transportation, in particular to a higher alcohol acrylate-perfluoroalcohol acrylate-dicyclopentadiene terpolymer used as a pour point depressant for crude oil as the main chain. The comb polymer with polyvinyl acetate as the side chain and its preparation method and application. Background technique [0002] Waxy crude oil usually has a relatively high freezing point. During the temperature drop of the crude oil, macromolecular wax gradually separates out of the crude oil and forms a three-dimensional network structure, which solidifies the crude oil, thereby affecting its fluidity and severely restricting the extraction and delivery. Therefore, it is necessary to add a pour point depressant to the crude oil to lower the freezing point of the crude oil, thereby facilitating the extraction and transportation of crude oil. [0003] At present, the commonly used crude o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F265/04C08F218/08C08F220/18C08F220/24C08F232/08C09K8/588C09K8/524
Inventor 李锦昕席作家赵凤英党亚红肖彭丁志杰王丽娟
Owner BC P INC CHINA NAT PETROLEUM CORP
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