Transportation drag reducing agent slurry for product oil pipelines and preparing method of transportation drag reducing agent slurry

A technology for pipeline transportation and drag reducing agent, applied in pipeline systems, mechanical equipment, gas/liquid distribution and storage, etc., can solve problems such as poor storage stability and shear resistance, and achieve sustainable drag reduction function. Eliminates the effect of spontaneous coagulation, high drag-reducing polymer content

Inactive Publication Date: 2014-12-10
TIANJIN VOCATIONAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a drag reducer slurry for product oil pipeline transportation, which can overcome the disadvantages of poor storage stability and shear resistance of the existing drag reducer slurry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 10.0 g of polymer grade TiCl 3 Add 100ml of freshly distilled hexane solvent to make a main catalyst suspension; add 50ml of diethylaluminum chloride to 150ml of freshly distilled hexane solvent to make a cocatalyst solution. A total of 500 g of α-octene with a mass percentage of 25% and α-dodecene with a mass percentage of 75% was added to a polymerization bottle as a polymerization raw material, and frozen in a freezer to below -5°C. Take the titanium trichloride catalyst and diethylaluminum monochloride co-catalyst with a syringe, mix and activate them for 30 seconds, then add them into the polymerization bottle containing α-olefin, and shake well. The weight ratio of the catalyst added is α-olefin:titanium trichloride:diethylaluminum chloride=1500:1:3. When the olefin mixture is pre-polymerized until the viscosity of the reaction solution reaches the point where the catalyst no longer sinks, it is left to react at -10°C to 15°C for 24 hours, and then it is continue...

Embodiment 2

[0044] Add 170mL of butyl titanate, 250mL of acetylacetone, 500mL of absolute ethanol, 80mL of deionized water and 10mL of 2mol / L dilute phosphoric acid into a 1000mL reactor, stir evenly, and carry out hydrolysis reaction at room temperature for 4-12h to obtain nano-titanium dioxide Ethanol sol 1000mL, average particle size 5-10nm, nano-titanium dioxide solid content in the sol is about 5%, sol pH 2-3.

Embodiment 3

[0046] Immerse 100 g of the drag-reducing polymer powder prepared in Example 1 in the 500 mL nano-titanium dioxide ethanol sol prepared in Example 2, stir for 5-10 minutes, make the surface of the drag-reducing polymer powder completely wetted by the nano-titanium dioxide ethanol sol, and centrifuge The drag-reducing polymer powder is dried by drying for 5-10 minutes, so that the solvent is completely volatilized, and a nano-titanium dioxide film is formed on the surface of the drag-reducing polymer powder to obtain 101.2 g of encapsulated drag-reducing polymer powder. 1.2% of the powder.

[0047] Add 0.5g lauric acid diethanolamide surfactant and 0.5g polyvinylpyrrolidone thickener to 100mL hexanol and stir to dissolve, then add 50mL propylene glycol antifreeze solvent and 0.025g o-phenylphenol antibacterial agent and stir evenly to obtain a transparent viscous Thick liquid, then add 101.2g of microencapsulated drag reducing polymer powder obtained above, stir vigorously for ...

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Abstract

The invention discloses a transportation drag reducing agent slurry for product oil pipelines and a preparing method of the transportation drag reducing agent slurry. A drag reducing polymer is prepared into a diluted microcapsule in such a way that the particle surface of an alpha-olefin drag reducing polymer pulverized at a low temperature is wrapped by 0.5-2.0 percentage by mass of nanometer titanium dioxide film. The stable drag reducing agent slurry is prepared after the diluted microcapsule is mixed with the auxiliaries of an organic solvent, a surfactant, a thickener, an anti-freezing solvent, an antimicrobial agent and the like. Obvious viscosity increase or polymer gluing phenomena do not occur after 150 days at the room temperature. The self-agglomeration of drag reducing polymer particles is radically eliminated by the microcapsule drag reducing agent, so that the storage stability of the drag reducing agent slurry is obviously improved. The microcapsule drag reducing agent does not contain water or impurities corroding the metal pipeline and has great anti-shearing capability. The drag reducing function can be continuously performed, and the average drag reducing rate is improved. The transportation drag reducing agent slurry is particularly suitable for the transportation drag reduction of the medium and long distance product oil pipelines.

Description

technical field [0001] The invention relates to a drag-reducing agent slurry for product oil pipeline transportation and a preparation method thereof, in particular coating low-temperature pulverized α-olefin drag-reducing polymer particles with nano-titanium dioxide sol to form drag-reducing polymer slow-release microcapsules, The invention discloses a method for preparing a stable drag reducer slurry by dispersing in an organic solvent, which belongs to the fields of petrochemical industry, environmental protection and energy saving. Background technique [0002] Drag reducer is a chemical additive widely used in pipeline transportation of crude oil and refined oil products. Adding a small amount into turbulent oil products can convert turbulent flow into laminar flow, greatly reduce the frictional resistance of the pipeline system, and rapidly and economically expand Improve the flow rate of the oil pipeline and reduce the energy consumption of the delivery pump, and impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/24C08F210/14C08J7/06F17D1/17
CPCC08K2003/2241C08L23/24C08F210/14C08K2201/003C08K2201/011C08K2201/013F17D1/17
Inventor 刘冰冰李建生祖晓东王韬
Owner TIANJIN VOCATIONAL INST
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