Method for preparing drag reduction agent for oil product through pipelines

A technology for pipeline transportation of oil products and drag reducing agents, which is applied in pipeline systems, mechanical equipment, gas/liquid distribution and storage, etc., and can solve problems such as not properly suppressing the growth rate, high heat, and affecting the drag reduction performance of the product

Active Publication Date: 2007-06-13
PIPECHINA SOUTH CHINA CO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional stirring method is still used in its preparation method, which makes the distribution of the catalyst uneven. At the same time, when the viscosity of the system rises enough, the effect of the traditional stirring method is very poor, and the heat generated is very large, which will rapidly deteriorate the polymerization. reaction
Therefore, this patent application does not properly suppress the chain growth rate in the copolymerization reaction, which limits the molecular weight and drag reduction performance of the copolymer to a certain extent
[0003]

Method used

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Examples

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Embodiment Construction

[0014] Embodiment. The concrete implementation of the present invention is illustrated with this example. A closed nitrogen reaction vessel with a volume of 1 cubic meter is selected, and a thermometer and a viscometer are installed in the reaction vessel. Take 64 milliliters of 1-hexene, 16 milliliters of styrene, 0.005 g (1 μ mole) of titanocene dichloride, 2.5 milliliters of MAO (toluene solution 10 mmol / L), nitrobenzene 8*10 -7 mol. Before starting, fill nitrogen into the airtight reaction container, and after the air is exhausted, start the ultrasonic generator and start to oscillate while continuously filling nitrogen. After the official start, the first step is to add titanocene dichloride into the airtight reaction container, and then add MAO to it after the addition is completed. Start timing from the time when MAO is added, and shake continuously for 20 minutes to mix titanocene dichloride and MAO evenly. ; In the second step, under the conditions of continuing to ...

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PUM

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Abstract

The invention relates to the preparation of an oil pipeline drag reducer. The method followed by the following steps : first adding main catalyst and promoter under the protection of nitrogen into respond containers, using ultrasonic vibration generator for 18 -26 minutes; In nitrogen, oscillations and -60 degreeC to 10 degree C ambient temperature conditions, adding polymerization monomer for reaction; Monitoring reaction temperature, when the reaction temperature rises above 3 DEG C than the initial reaction temperature, adding nitrobenzene retarder; cease oscillation when the system viscosity rise to 3500 -6000MPa .s; ultrasonic vibration generator to 25 KHz frequency, power adjustable. After the cessation of oscillation system, continued reaction to 5 ~ 14 days, finally obtain purple polymer. This method is easy to operate, easy to control, easy to ensure the quality.

Description

technical field [0001] The invention relates to a preparation method of a drag reducer for oil pipelines for drag reduction of oil pipelines. It relates to the technical fields of organic polymer compounds and pipeline systems. Background technique [0002] In recent years, the drag reduction technology of oil pipelines has made great progress, and there have been more than a dozen patents authorized or applied for. The molecular weight of the drag-reducing polymer tends to be ultra-high molecular weight, the catalytic effect of the catalyst is more complete, the production and preparation methods are becoming more and more perfect, and the solid content of the polymer product is higher, which is more convenient for on-site application in oil pipelines. For example, in the "α-olefin-styrene ultra-high molecular weight drag-reducing copolymer and its preparation method" applied by the company on June 18, 2003, the polymerized monomer of α-olefin-styrene ultra-high molecular ...

Claims

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Application Information

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IPC IPC(8): C08F212/08C08F210/00F17D1/17
Inventor 李春漫常维纯徐海红高艳清鲍旭晨
Owner PIPECHINA SOUTH CHINA CO
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