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Drag reducer and preparation method thereof

A technology of drag reducer and release agent, which is applied in mechanical equipment, gas/liquid distribution and storage, pipeline system, etc. It can solve the problems of high viscosity of the system, cumbersome operation process, high reaction heat, etc., so as to slow down the agglomeration, The effect of simplifying the production process and slowing down the rise of polymer particles

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

One problem with bulk polymerization is that due to the extremely high heat of reaction generated by bulk polymerization and the high viscosity of the system, it is necessary to divide the polymerization reactants into relatively small reaction vessels and then place them in a low temperature environment during polymerization. Reaction, the operation process is very cumbersome

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

[0038] This example is used to illustrate the stabilizing effect of surfactants on the suspension system.

[0039] In the embodiment, agent 1 is Tween 40; agent 2 is Span 60; agent 3 is octylphenol polyoxyethylene ether (4); agent 4 is isooctylphenol polyoxyethylene ether (7); agent 5 is Disodium fatty alcohol polyoxyethylene ether sulfosuccinate; agent 6 is cocamidopropyl betaine; agent 7 is sodium α-alkenyl sulfonate (18); agent 8 is nonylphenol ethoxylate phosphate ; Agent 9 is sodium petroleum sulfonate.

[0040] Take 0.8g of calcium stearate powder (with a particle size of 80 mesh to 100 mesh), add it to 20g of simethicone oil (300cst), add 0.4g of surfactant, stir evenly with a glass rod, pour it into a test tube and let it stand for observation . At the same time, the blank test without adding surfactant was used, and the test results are shown in Table 1. As can be seen from Table 1, adding surfactants can greatly delay the sedimentation of calcium stearate in silic...

Embodiment 2

[0044] This example is used to illustrate the stabilizing effect of the surfactant on the drag reducer suspension system.

[0045] In the embodiment, agent 1 is sodium petroleum sulfonate; agent 2 is cocamidopropyl betaine; agent 3 is sodium α-alkenyl sulfonate (18).

[0046] Take 10 g of the bulk polymerized rubbery drag reducer polymer, mix it with 5 g of calcium stearate, and grind it into powder with a low-temperature pulverizer. Take 1g of the pulverized powder, add it to 20g of simethicone oil (300cst) containing 0.4g of surfactant, stir it evenly and let it stand for observation. Simultaneously, the test without surfactant was used as a blank test, and the test results are shown in Table 2. It can be seen from Table 2 that adding a surfactant can greatly reduce the precipitation rate within a specified time and enhance the stability of the system. Among them, the effect of sodium petroleum sulfonate is better.

[0047] Table 2 Stability comparison of drag reducer sus...

Embodiment 3

[0050] This example is used to illustrate the preparation method of polyalphaolefin / simethicone oil slurry.

[0051] 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 )TiCl 4 , 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 loading 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%.

[0052] Mix 35g of 1-octene refined by molecular sieves (purchased from ACROS Reagent Company) with 65g of dimethicone oil refined by molecular sieves (pu...

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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. 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. The drag reducer has the advantages of good stability, low viscosity, good fluidity, and user-friendliness. 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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IPC IPC(8): C08F110/00C08F110/14C08F2/06C08K5/09C08K5/098C08K5/20C08K5/101F17D1/17
CPCY02E60/34
Inventor 李峰王振宇楚喜丽谭丽李本高
Owner CHINA PETROLEUM & CHEM CORP
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