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Drag reducer for oleic acid and ester derivatives thereof and preparation method thereof

A technology of derivatives and drag reducers, which is used in the preparation of organic macromolecular compounds and in the field of pipeline systems, can solve the problems of rising production costs, high density of vegetable oil, and unachievable high-temperature resistance, and achieve good high-temperature resistance and reduce production costs. cost effect

Active Publication Date: 2012-07-18
PIPECHINA SOUTH CHINA CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use range of the drag reducing polymer suspension obtained by this preparation method is 10°C-70°C, which is higher than that of general alcohol-based drag reducer in the use temperature range, but the disadvantage is that the high temperature resistance performance still cannot be achieved in summer and summer. The requirements for use in some high-temperature areas are mainly reflected in the problems of floating and agglomerating particles and layering of suspensions. This is due to the high density of vegetable oil, and with the gradual increase in domestic vegetable oil prices, its production costs have increased. Finding the substitute of vegetable oil also becomes the necessity of the present invention

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1. In the three-necked bottle, 1.5g EBS is emulsified in 18g oleic acid, adds 2.1g polyethylene wax, 2.7g Span-80, 0.3g Tween-60, 0.06g hydroxyethyl cellulose, fully After stirring for 20 minutes, heat to 60°C, the viscosity of the EBS solution increases, and an EBS emulsion is obtained. Its form is a light yellow emulsion. As the emulsification process proceeds, the solution gradually becomes thicker from thinner, and the solution turns into a suspoemulsion, and the stability is greatly increased; 33g of poly-α-olefin particles that have been milled are stirred evenly, and then 43g of oleic acid was added to obtain a light yellow emulsion with a polyalphaolefin particle content of about 32.8%.

Embodiment 2

[0017] Embodiment 2. 2.5g stearamide is emulsified in 18g butyl oleate in three-necked bottle, add stearamide, 2.7g Span-60, 0.3g Tween-80, 0.1g hydroxypropyl cellulose , 1.1g of liquid paraffin, fully stirred for 10 minutes, heated to 55°C to obtain an emulsion, which appeared as a light yellow emulsion, added 26g of poly-α-olefin particles that had been milled, stirred and dispersed in the emulsion, and added oil Butyl acid 42g obtains light yellow emulsion, and the polyalpha-olefin particle content is about 28%.

Embodiment 3

[0018] Example 3. In a three-necked flask, 2g of oleic acid amide was emulsified in 20g of oleic acid, and oleic acid amide, 3 grams of Span-80, 1g of Tween-60, 0.1g of hydroxypropyl methylcellulose, and 2g of solid were added Paraffin wax, 0.5g liquid paraffin, after fully stirring for 10 minutes, heat to 50°C to emulsify, add 30g of poly-α-olefin particles that have been milled, then add 40 grams of oleic acid, stir and disperse in the emulsion evenly, poly-α-olefin becomes Very fine particles are dispersed in the emulsion without agglomeration, and the content of polyalphaolefin particles is about 30.4%.

[0019] The product prepared by this method was tested, and it was placed at 70°C for six months without delamination, and there was no sticky product, and the stability of the product was greatly enhanced; the flash point of the product was as high as 85°C, fully meeting the safety requirements for transportation .

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Abstract

The invention discloses a drag reducer for oleic acid and ester derivatives thereof and a preparation method thereof, and relates to the technical field of the preparation of organic macromolecular compounds and pipeline systems. The drag reducer consisting of a poly(alpha-olefin) drag reducing polymer, a surfactant, a dispersant, long carbon chain amide, thickening agent as an emulsifying agent and a solvent is characterized in that the solvent is selected from the oleic acid and the ester derivatives thereof. In the total weight of 100 percent, the surfactant accounts for 1 to 5 percent, the dispersant accounts for 1 to 5 percent, the long carbon chain amide accounts for 1 to 5 percent, and the thickening agent as the emulsifying agent accounts for 0.01 to 0.1 percent. The preparation method comprises the following steps: using 10 to 20 percent of the oleic acid and the ester derivatives thereof as an emulsifying solvent to perform emulsification; adding a newly crushed drag reducing polymer accounting for 25 to 40 percent of the total weight into the emulsifying solvent, and then stirring the mixture; and finally diluting the mixture by using 40 to 60 percent of the oleic acid and the ester derivatives, and stirring the mixture evenly.

Description

technical field [0001] The invention relates to a drag reducer of oleic acid and its ester derivatives and a preparation method thereof. The invention relates to the technical field of preparation of organic macromolecular compounds and pipeline system. Background technique [0002] Drag-reducing polymers usually use α-olefin ultra-high molecular weight polymers, which can interact with hydrocarbon turbulent fluids in pipelines or pipelines to reduce their frictional resistance and energy loss. However, the α-olefin ultra-high molecular weight polymer obtained by general methods such as bulk polymerization is viscoelastic and fast, and cannot be directly used in oil pipelines. , That is, the poly-alpha-olefin petroleum drag reducer suspension can be used. At present, there are many common and better preparation methods, which can be roughly divided into two types: alcohol-based and oil-based according to the type of solvent. Alcohol-based drag reducers have been gradually...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K3/00F17D1/16
Inventor 李春漫刘兵徐海红李国平
Owner PIPECHINA SOUTH CHINA CO