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 p

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

Example Embodiment

[0037] Example 1

[0038] This example is used to illustrate the stabilizing effect of the surfactant 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 Fatty alcohol polyoxyethylene ether disodium sulfosuccinate; agent 6 is coconut oil amidopropyl betaine; agent 7 is sodium α-alkenyl sulfonate (18); agent 8 is nonylphenol polyoxyethylene ether phosphate ; Agent 9 is sodium petroleum sulfonate.

[0040] Take 0.8g calcium stearate powder (with a particle size of 80-100 mesh), add it to 20g simethicone (300cst), add 0.4g 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 surfactant is used. The test results are shown in Table 1. It can be seen from Table 1 that the addition of surfactants can greatly delay the sedimentation of calcium s...

Example Embodiment

[0043] Example 2

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

[0045] In the examples, agent 1 is sodium petroleum sulfonate; agent 2 is cocoamidopropyl betaine; agent 3 is sodium α-ene sulfonate (18).

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

[0047] Table 2 Comparison of stability of drag reducer suspen...

Example Embodiment

[0049] Example 3

[0050] This example is used to illustrate the preparation method of poly-α-olefin / dimethyl silicone oil slurry.

[0051] The polymerization catalyst used is prepared by the following method: add 2.0 grams of magnesium ethoxide particulate carrier (the particle diameter is 40-50 microns) and 30 ml of toluene into the reaction flask, and after uniform dispersion, reduce the temperature to -10°C, add 10 ml (6.0 mol) )TiCl 4 , Stay for 0.5 hours, add 0.6ml (0.39mol) diisobutyl phthalate to 80°C, react for 2 hours at 110°C, settle, filter, and wash twice with toluene (20ml each time) ,Second loading titanium, add 5ml (3.0mmol) TiCl 4 Reacted with 30ml of toluene for 1 hour, settled, filtered, washed with hexane 4 times, and dried at 72°C to obtain a catalyst solid component. The mass percentage of titanium in the catalyst is 2.87%.

[0052] Mix 35g of 1-octene refined by molecular sieve (purchased from ACROS Reagent Company) and 65g of simethicone refined by molecular...

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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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