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Drag-reduction agent slurry and preparation method thereof

A technology of drag reducer and slurry, applied in mechanical equipment, gas/liquid distribution and storage, pipeline system, etc., can solve problems such as suffocation, cumbersome operation, and large liquid nitrogen

Active Publication Date: 2016-03-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cryogenic crushing not only consumes a large amount of liquid nitrogen, but also requires a long period of pre-cooling for the equipment, which is cumbersome to operate, causing low-temperature injury to the operator and the risk of suffocation

Method used

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  • Drag-reduction agent slurry and preparation method thereof
  • Drag-reduction agent slurry and preparation method thereof

Examples

Experimental program
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preparation example Construction

[0013] According to the present invention, the preparation method of the drag reducer slurry includes performing slurry polymerization on α-olefin monomers in silicone oil to obtain a drag reducer polymer suspension, wherein the method also includes: the obtained drag reducer Carry out solid-liquid separation of the agent polymer suspension, separate the lower silicone oil phase, and mix the upper solid elastomer phase with the release agent, surfactant and alcohol solvent evenly, and the surfactant is an anionic-nonionic surfactant .

[0014] Preferably, the anionic-nonionic surfactant is selected from the group consisting of alkylphenol polyoxyethylene ether phosphate, alkylphenol polyoxyethylene ether sulfonate, fatty alcohol polyoxyethylene phosphate, fatty alcohol polyoxyethylene One or more of sulfonate and fatty alcohol polyoxyethylene sulfate. Wherein, the number of carbon atoms of the alkyl group in the alkylphenol polyoxyethylene ether phosphate and the alkylphenol ...

Embodiment 1

[0051] This example is used to illustrate the preparation of the drag reducer slurry provided by the present invention.

[0052] The polymerization catalyst used is prepared by the following method: 2.0 grams of ethoxymagnesium microparticle carrier (particle diameter is 40-50 microns), toluene 30ml are added in the reaction bottle and dispersed evenly, the temperature is reduced to -10 ℃, add 10ml (6.0mol )TiCl 4 , stay for 0.5 hours, warm up to 80°C, add 0.6ml (0.39mol) diisobutyl phthalate, heat up to 110°C for 2 hours, settle, filter, heat wash twice with toluene (20ml each time), twice Load titanium, add 5ml (3.0mmol) TiCl 4 React with 30ml of toluene for 1 hour, settle, filter, wash with hexane four times, and dry at 72°C to obtain a catalyst solid component. The mass percent content of titanium in the catalyst is 2.87%.

[0053] Mix 35 g of 1-octene refined with molecular sieves (purchased from ACROS Reagent Company) with 65 g of simethicone oil refined with molecula...

Embodiment 2

[0055] This example is used to illustrate the preparation of the drag reducer slurry provided by the present invention.

[0056] The drag reducer slurry was prepared according to the method of Example 1, the difference was that after the polymerization reaction, 3.0 g of zinc stearate was added to the upper solid elastomer phase, and the emulsifier was mixed evenly, and the surfactant nonylphenol was added 2.0 g of oxyethylene ether (21) sulfonate, 30 g of n-octanol, mix well, pour into a stoppered jar and let stand for observation. Get sample B. The storage stability, fluidity and drag reduction rate are shown in Table 1.

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Abstract

The present invention discloses a drag-reduction agent slurry and a preparation method thereof, the method comprises slurry polymerization of an alpha-olefin monomer in silicone oil to obtain a drag-reduction agent polymer suspension, the method also comprises solid-liquid separation of the obtained drag-reduction agent polymer suspension to separate a lower layer silicone oil phase and even mixing of an upper solid elastomer phase and a surfactant and an alcohol solvent, and the surfactant is an anionic-nonionic surfactant. According to the method, after the solid-liquid separation of the obtained drag-reduction agent polymer suspension, part of the separated silicone oil can be reused in the polymerization reaction, on the one hand the amount of the silicone oil used in the polymerization reaction can be reduced, and on the other hand the viscosity of the polymer suspension can be reduced. In addition, by additional addition of an appropriate amount of the alcohol solvent and addition of the suitable surfactant, the viscosity of the system can be significantly reduced, the relative stability of the system can be increased, and the product is easier to fill into a pipeline.

Description

technical field [0001] The invention relates to a drag reducer slurry 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 realize energy saving and consumption reduction in the process of fluid pipeline transportation and increase pipeline transportation volume. [0003] For the drag reduction in the process of crude oil and refined oil transportation, the best drag reduction effect is the polymer of α-olefin, and the carbon number of the olefin is 2-30, preferably 8-14 α-olefin. In the case of a small amount of use, the long-chain α-olefin polymer can achieve a higher drag reduction effect, and its drag reduction effect increases with the increase in the molecular weight of the α-olefin polymer, usually α-olefin The molecular weight of the polymer should be above 106. [0004] The α-olefin polymer can be homopolymerized with a single olefin, or can be copolym...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/02C08L23/20C08L83/04C08L71/00C08K5/098C08F10/00C08F110/14C08F2/06C08F6/24F17D1/17
Inventor 王振宇楚喜丽侯研博李本高谢婧新荣峻峰
Owner CHINA PETROLEUM & CHEM CORP
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