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Drag reducer and preparation method thereof

A technology of drag reducing agent and isolating agent, applied in mechanical equipment, pipeline systems, gas/liquid distribution and storage, etc., can solve problems such as affecting the normal transportation of crude oil, loss of light oil content, etc., and achieve stable drag-reducing polymer particle suspension. system, the effect of slowing down agglomeration and preventing particles from sticking to each other

Active Publication Date: 2014-07-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the process of pipeline transportation of crude oil, these waxes will crystallize out due to cooling, seriously affecting the normal transportation of crude oil
If a station-by-station heating process is used to raise the temperature and reduce the viscosity of crude oil, the fuel power consumption accounts for about 30% of the oil transportation cost, and at the same time, light oil in crude oil will be lost

Method used

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  • Drag reducer and preparation method thereof
  • Drag reducer and preparation method thereof
  • Drag reducer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] This example is used to illustrate the preparation method of SME release agent.

[0035] Add 9.8g of maleic anhydride and 100mL of toluene into a three-necked flask, raise the temperature to reflux temperature to dissolve the maleic anhydride, cool down to 80°C, add 0.24g of dodecanethiol and 10.3g of styrene, keep the reaction temperature at 80°C, and dissolve the peroxide Dissolve 0.24g of benzoyl (BPO) in 30mL of toluene, slowly add it dropwise into a three-neck flask, keep it warm for 4 hours, during which the copolymer of styrene-maleic anhydride is continuously precipitated, filter, and put the filter cake at 80°C Vacuum drying yielded 17.2 g of styrene-maleic anhydride copolymer.

[0036] Take 17.2 g of the above styrene-maleic anhydride copolymer, add 43 g of stearyl alcohol, 100 mL of toluene, and 0.5 g of p-toluenesulfonic acid, raise the temperature to reflux temperature, and react for 4 hours, during which the styrene maleic anhydride solid gradually dissolv...

Embodiment 2

[0038] This example is used to illustrate the preparation method of polyalphaolefin / simethicone oil slurry.

[0039] The polymerization catalyst used is prepared according to the following method: add 2.0 grams of ethoxymagnesium particle carrier (particle diameter is 40-50 microns), toluene 30ml into the reaction bottle and disperse evenly, lower the temperature to -10°C, add 10ml (6.0mol )TiCl4, stay for 0.5 hours, heat up to 80°C, add 0.6ml (0.39mol) diisobutyl phthalate, heat up to 110°C, react for 2 hours, settle, filter, wash with toluene twice (20ml each time), Secondary titanium loading, adding 5ml (3.0mmol) TiCl4 and 30ml toluene to react for 1 hour, settling, filtering, washing with hexane four times, and drying at 72°C to obtain the catalyst solid component. The mass percent content of titanium in the catalyst is 2.87%.

[0040] Mix 35g of 1-octene refined by molecular sieves (purchased from ACROS Reagent Company) with 65g of dimethicone oil refined by molecular si...

Embodiment 3

[0042] Prepare polyalpha-olefin / dimethyl silicone oil slurry by the same method as in Example 2. After the polymerization reaction, add 9 g of SME to the slurry, stir for 30 minutes, add 2 g of sodium petroleum sulfonate, and stir for 30 minutes to obtain drag reducer slurry A. See Table 1 for storage stability.

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Abstract

The invention provides a drag reducer and a preparation method thereof. The drag reducer is a suspension liquid containing poly(alpha-alkene), silicone oil, an isolating agent, and a surfactant, wherein the isolating agent is a solid polyester pour-point reducer. The preparation method comprises the following steps: (1) subjecting alpha-alkene to coordination polymerization in silicone oil; (2) mixing the system obtained in the step (1) with an isolating agent after the coordination polymerization, and then adding a surfactant so as to obtain the suspension liquid, wherein the isolating agent is a solid polyester pour-point reducer. The drag reducer has the advantages of good stability, low viscosity, good fluidity, and user-friendliness, and has the functions of reducing drag and pour-point. The preparation method is simple, and can be easily applied to the industry.

Description

technical field [0001] The invention provides a drag reducer and a preparation method thereof. Background technique [0002] Drag reducer is a chemical agent that reduces fluid flow resistance, which is of great significance to energy saving and consumption reduction in the process of fluid pipeline transportation and to increase pipeline transportation volume. [0003] For the transportation process of crude oil and refined oil, the best drag reduction effect is the homopolymer or copolymer of α-olefin. Generally, a few ppm to tens of ppm of poly α-olefin is added to the oil to achieve a high drag reduction effect. Drag reduction effect. The polyalphaolefin used as a drag reducer generally has a monomer with a carbon number between 2 and 30, and a more preferable carbon number range is between 8 and 14. Molecular weight is the basic parameter affecting the drag reduction performance of polyα-olefin, and the drag reduction efficiency increases with the increase of molecula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F110/00C08F110/14C08F2/06C08F222/08F17D1/17
CPCY02E60/34
Inventor 王振宇于丽李峰谢婧新谭丽李本高荣峻峰
Owner CHINA PETROLEUM & CHEM CORP
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