Pour point reducing paraffin inhibitor, and preparation method thereof

A wax inhibitor and porous polymer technology, which is applied in the field of pour point depressant wax inhibitor and its preparation, can solve the problem that the low temperature rheological properties of waxy crude oil cannot be effectively improved, and achieve the improvement of nucleation barrier, reduction of deposition, The effect of lowering the freezing point

Active Publication Date: 2019-09-27
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above-mentioned deficiencies in the prior art, the object of the present invention is to provide a pour point depressant and wax inhibitor and a preparation method thereof, aiming at solving the problem that in the prior art, the pour point depressant and wax inhibitor cannot effectively improve the low temperature rheology of waxy crude oil performance and reduce the problem of wax deposition on the pipe wall

Method used

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  • Pour point reducing paraffin inhibitor, and preparation method thereof
  • Pour point reducing paraffin inhibitor, and preparation method thereof
  • Pour point reducing paraffin inhibitor, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] 26mL of octadecyl acrylate (reactive monomer), divinylbenzene (crosslinking agent) of 10% of the mass of octadecyl acrylate, Span-80 (emulsifier) ​​of 30% of the mass of octadecyl acrylate ) heating and melting at 70°C to obtain the first mixture;

[0057] The first mixture was emulsified with 74 mL of distilled water for 30 min under stirring to prepare a water-in-oil type high internal phase emulsion;

[0058] Using azobisisobutyronitrile with 1% mass of stearyl acrylate as an initiator, the prepared water-in-oil type high internal phase emulsion was transferred to a mold and left to react for 1 day under the protection of a nitrogen atmosphere. The porous polymer is prepared; the porous polymer is ground to a particle size range of 100 nm to 10 μm to obtain the pour point depressant and wax preventive agent 1.

Embodiment 2

[0060] 24mL of cetyl acrylate (reaction monomer), divinylbenzene (crosslinking agent) of 5% of the cetyl acrylate mass, Span-80 (emulsifier) ​​of 30% of the cetyl acrylate mass ) heating and melting at 60° C. to obtain the first mixture;

[0061] The first mixture was emulsified with 76 mL of distilled water for 30 min under stirring to prepare a water-in-oil type high internal phase emulsion;

[0062] Using 1% azobisisobutyronitrile by mass of cetyl acrylate as an initiator, the prepared water-in-oil type high internal phase emulsion was transferred to a mold and left to react for 1 day under the protection of a nitrogen atmosphere. The porous polymer is prepared; the porous polymer is ground to a particle size range of 100 nm to 10 μm to obtain the pour point depressant and wax preventive agent 2.

Embodiment 3

[0064] 22mL of eicosyl acrylate (reactive monomer), divinylbenzene (crosslinking agent) of 10% of said eicosyl acrylate mass, Span-80 (emulsifier) ​​of 30% of said eicosyl acrylate mass ) heating and melting at 80°C to obtain the first mixture;

[0065] The first mixture was emulsified with 78 mL of distilled water for 30 min under stirring to prepare a water-in-oil type high internal phase emulsion;

[0066] Using 1% azobisisobutyronitrile by mass of the eicosyl acrylate as an initiator, the prepared water-in-oil type high internal phase emulsion was transferred to a mold and left to react for 1 day under the protection of a nitrogen atmosphere. The porous polymer is prepared; the porous polymer is ground to a particle size range of 100 nm to 10 μm to obtain the pour point depressant and wax preventive agent 3.

[0067] Take the pour point depressant and wax preventive agent 1 as an example to test the effect of the present application's pour point depressant and wax prevent...

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Abstract

The invention discloses a pour point reducing paraffin inhibitor. The pour point reducing paraffin inhibitor comprises a porous polymer which is capable of realizing eutectic reaction and/or adsorption reaction with wax in crude oil, wherein the surface and the internal part of the porous polymer comprise alkyl side chains; and the alkyl side chains are capable of realizing eutectic reaction and/or adsorption reaction with wax in crude oil. The above method is capable of improving wax containing crude oil low temperature rheological property and reducing deposition of wax on tube walls.

Description

technical field [0001] The invention relates to the field of crude oil pour point depressing and wax preventing technology, in particular to a pour point depressing and wax preventing agent and a preparation method thereof. Background technique [0002] Waxy crude oil is an important fossil energy source widely distributed all over the world. The waxes in waxy crude oil are mainly C16-C40 normal alkanes. At the same time, most waxy crude oils also include a certain amount of non-hydrocarbon colloids and asphaltenes. Therefore, waxy crude oil has a high freezing point and poor fluidity at room temperature. , The rheological behavior is complex, and the precipitated wax is easy to deposit on the pipe wall, which makes the pipeline transportation of this kind of oil difficult. [0003] In the prior art, the pour point depressant and anti-wax agent cannot effectively improve the low-temperature rheological properties of waxy crude oil, reduce the deposition of wax on the pipe w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K8/524C08F220/18C08F212/36
CPCC09K8/524C08F220/18C08F220/1818
Inventor 姚博李传宪杨飞孙广宇
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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