Method for preparing drag reduction agent for oil product through pipelines

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 ...

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] In order to control the reaction speed in polymer polymerization, adding retarder is a common method, but in the synthesis process of drag reducing polymer, because the control of polymerization speed and polymerization reaction heat directly affects the final product performance, and The addition of a retarder is directly related to the polymerization speed and the generation of polymerization heat, which in turn affects the drag reduction performance of the product, so professionals in this field have never tried to add a retarder in the drag reduction polymerization process