Expanded graphite and poly alpha-olefin composite oil drag reducer blending synthesis method

A technology of expanded graphite and α-olefin, which is applied in the pipeline system, mechanical equipment, gas/liquid distribution and storage, etc., can solve the problems of loss of drag reduction function, molecular weight reduction, etc., and achieve drag reduction effect and disperse shear effect force, reduce the effect of degradation loss

Active Publication Date: 2018-12-18
SHENGLI COLLEGE CHINA UNIV OF PETROLEUM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Generally, the larger the molecular weight of polyalphaolefin and the higher the degree of non-crystallization, the better the drag reduction effect, but the ultra-high molecular weight polyalphaolefin is very easy to break the molecular chain under the action of fluid, so that the molecular weight is reduced and the drag reduction is lost. function, the phenomenon of shear degradation

Method used

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  • Expanded graphite and poly alpha-olefin composite oil drag reducer blending synthesis method
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  • Expanded graphite and poly alpha-olefin composite oil drag reducer blending synthesis method

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Embodiment 1

[0022] Embodiment 1: The expanded graphite polyalphaolefin composite oil drag reducer blending method that the present invention mentions comprises the following steps:

[0023] First, weigh 20g of expandable graphite in a beaker, place it in a vacuum oven at 100°C, and dry it for 24 hours; then transfer the beaker to a microwave oven and heat it for 60s, take it out, and cool it at room temperature; repeat this step 3 times to obtain expanded graphite; then follow Add expanded graphite to 1% N-methylpyrrolidone (NMP) aqueous solution at a mass ratio of 20:1 to N-methylpyrrolidone (NMP); then add dodecane dropwise at a mass ratio of 1:50 to expanded graphite Sodium phenyl sulfonate, stirred at 100r / min at room temperature for 48h; then placed in an ultrasonic generator, ultrasonicated at 25°C for 10min; put the solution in a vacuum oven at 80°C, dried for 24h, took it out after the water evaporated, and used Ultrasonic treatment for 60 minutes, pulverized and refined into modi...

Embodiment 2

[0025] Embodiment 2: The expanded graphite / polyalphaolefin composite oil drag reducer blending method mentioned in the present invention is as follows:

[0026] First, weigh 20g of expandable graphite in a beaker, place it in a vacuum oven at 100°C, and dry it for 36h; then transfer the beaker to a microwave oven and heat it for 30s, take it out, and cool it at room temperature; repeat this step 10 times to obtain expanded graphite; Add expanded graphite to 1% NMP aqueous solution at a mass ratio of 50:1 to N-methylpyrrolidone (NMP); then add sodium dodecylbenzenesulfonate dropwise at a mass ratio of 1:100 to expanded graphite, Stir at 500r / min at room temperature for 24 hours; then place it in an ultrasonic generator, and ultrasonicate for 60 minutes at 25°C; place the solution in a vacuum oven at 80°C, dry for 36 hours, take it out after the water evaporates, treat it with ultrasonic waves for 90 minutes, and crush into modified expanded graphite.

[0027] Put the polyalpha...

Embodiment 3

[0028] Embodiment 3: The expanded graphite / polyalphaolefin composite oil drag reducer blending method mentioned in the present invention is as follows:

[0029] First, weigh 20g of expandable graphite in a beaker, place it in a vacuum oven at 100°C, and dry it for 24 hours; then transfer the beaker to a microwave oven and heat it for 60s, take it out, and cool it at room temperature; repeat this step 3 times to obtain expanded graphite; Add expanded graphite to 1% NMP aqueous solution at a mass ratio of 40:1 to N-methylpyrrolidone (NMP); then add sodium tetradecylbenzenesulfonate dropwise at a mass ratio of 1:70 to expanded graphite, Stir at 300r / min at room temperature for 36h; then place it in an ultrasonic generator, and ultrasonicate for 30min at 25°C; place the solution in a vacuum oven at 80°C, dry for 24h, take it out after the water evaporates, treat it with ultrasonic waves for 50min, and crush it finely into modified expanded graphite.

[0030] Put the polyalphaolef...

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Abstract

The invention relates to an expanded graphite and poly alpha-olefin composite oil drag reducer blending synthesis method. According to the technical scheme, the method comprises the following preparation methods that 1, expanded graphite is made; 2, the expanded graphite is added into n methyl pyrrolidone aqueous solution, then anionic surfactant drips proportionally, stirring is conducted at theroom temperature, and then the mixture is put into an ultrasonic generator for a period of time; 3, the mixture is put into a vacuum drying box to be dried and is refined into modified expanded graphite through ultrasonic grinding; 4, poly alpha-olefin solid is put into liquid nitrogen to be vitrified; and 5, the modified expanded graphite powder is added into the poly alpha-olefin solid, and themixture is stirred into powder and then is made into a drag reducer. The blending synthesis method has the beneficial effects that the process is simple, the processed expanded graphite is added onlyin the smashing process of the poly alpha-olefin, no reaction steps or severity are increased, and the synthetic composite drag reducer keeps an anti-drag effect and has certain anti-shear ability.

Description

technical field [0001] The invention relates to a pipeline drag-reducing transportation process and the technical field of a drag-reducing agent, in particular to a method for co-mixing an expanded graphite polyalphaolefin composite oil drag-reducing agent. Background technique [0002] Since the report of Toms adding additives for drag reduction, fluid friction resistance can be reduced by adding various drag reducing agents, up to 80%, providing solutions for various fluid drag reduction and energy-saving transportation processes. Surfactants and polymer drag reducers suppress energy dissipation through elastic deformation energy conversion, reduce macroscopic upper body friction, reduce pressure drop loss, and reduce transportation energy consumption. All kinds of surfactants should be added as drag reducers to circulation delivery systems such as hot water, cold water, and coolant, which can reduce the energy consumption of the pump by more than half. The polyacrylamide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D1/16
CPCF17D1/16
Inventor 代晓东李雷刘焕荣王琦煜刘飞王涛
Owner SHENGLI COLLEGE CHINA UNIV OF PETROLEUM
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