Drag reducer, and preparation method thereof

A technology of drag reducing agent and isolating agent, applied in mechanical equipment, pipeline system, gas/liquid distribution and storage, etc., can solve the problems of loss of light oil content, affecting the normal transportation of crude oil, etc. The effect of drag reducing polymer particle suspension system and storage stability

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

AI Technical Summary

Benefits of technology

The technical purpose described in this patented technology relates to improving the properties (such as reducing friction) of liquid transporting systems without adding any chemical substances or modifying their structure during manufacturing processes. By utilizing special materials called silicon oils instead of traditional lubricants like mineral oil, these liquids have better flowability compared to existing products made up entirely of them. They may even stay suspended for longer periods before being stored again after usage. Additionally, they maintain good dispersion characteristics when mixed together. Overall, this innovative solution provides an efficient way to reduce frictional forces while avoiding problems associated with previous methods.

Problems solved by technology

Technological Problem: Fluorochemistry describes how to improve the properties of materials like liquid hydrocarbon fluids through addition of specific substances known as drag reducing agents. Existing solutions involve dissolving large quantities of liquified paraffin oil into solvents followed by dilution onto cold temperatures. Additionally, there may also require separation from heavy residue after processing. To solve this issue, various techniques involving thermal decomposition processes have been proposed but each suffers drawbacks including difficulty handling and poor quality control over final product.

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

[0042] This example is used to illustrate the preparation method of the composite release agent.

[0043] 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.

[0044] Take 17.2g of the above-mentioned styrene-maleic anhydride copolymer, add 34.4g of montmorillonite, 80g of stearyl alcohol, 120mL of toluene, 0.8g of p-toluenesulfonic acid, heat up to the reflux temperature, and react for 4h, during which the styrene-maleic anhydride ...

Embodiment 2

[0046] This example is used to illustrate the preparation method of polyalphaolefin / simethicone oil slurry.

[0047] 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 for 2 hours, settle, filter, wash with toluene twice (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%.

[0048] Mix 35g of 1-octene refined by molecular sieves (purchased from ACROS Reagent Company) with 65g of dimethicone oil refined by molecular sieves (purchased from Bei...

Embodiment 3

[0050] Prepare the polyalpha-olefin / dimethyl silicone oil slurry in the same manner as in Example 2. After the polymerization reaction, add 9 g of the composite release agent of Example 1 to the slurry, stir for 30 min, add 2 g of sodium petroleum sulfonate, and stir for 30 min. The drag reducer slurry A was obtained, and the storage stability is shown in Table 1.

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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 compound solid particle composed of a polyester pour-point reducer and clay. 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 a suspension liquid; wherein the isolating agent is a compound solid particle composed of a polyester pour-point reducer and clay. The drag reducer has the advantages of good storage stability, low viscosity, good fluidity, and user-friendliness, and has the functions of reducing drag and pour point. The preparation method is simple and is capable of being easily applied to industry.

Description

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Claims

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Application Information

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Owner CHINA PETROLEUM & CHEM CORP
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