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Method for preparing high-performance oil-water separation membrane

An oil-water separation membrane, high-performance technology, applied in separation methods, liquid separation, semi-permeable membrane separation, etc., can solve the problems of unsatisfactory oil-water separation effect, poor anti-pollution ability, fast flux attenuation, etc., and achieve anti-oil pollution Improved capacity, strong oil-water separation capacity, and high water flux

Active Publication Date: 2021-05-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the existing problems in the prior art, such as poor film-forming property, poor anti-pollution ability, high-viscosity crude oil, easy to block pores, and rapid flux attenuation , the oil-water separation effect is not very ideal, etc.

Method used

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  • Method for preparing high-performance oil-water separation membrane
  • Method for preparing high-performance oil-water separation membrane
  • Method for preparing high-performance oil-water separation membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Preparation of metal-organic framework materials:

[0055] (1) Take 3.00g of zirconium tetrachloride powder, 3.12g of nitroterephthalic acid powder, and 0.20g of deionized water, put them into a single-necked flask filled with 360g of N,N dimethylformamide after mixing, and ultrasonically treat for 12min , to fully dissolve it.

[0056] (2) Transfer the solution in the flask to a polytetrafluoroethylene-lined stainless steel reactor, place the temperature in a convection heating furnace to 110° C., and react for 36 hours; after the reaction is completed, wait for the reactor to cool down and collect the reaction product. The reaction product was transferred to a centrifuge tube, and centrifuged at 14000 rpm for 18 min to separate solid particles. Under the condition of normal temperature, the solid particles obtained by the reaction were washed with ethanol solution for 8 hours, and then the solid particles after washing were obtained by centrifugation using the above ...

Embodiment 2

[0059] Preparation of metal-organic framework materials:

[0060] (1) Get 30g zirconium tetrachloride powder, 31.2g nitroterephthalic acid powder, 1.5g deionized water, drop into after mixing and fill 30Kg N, in the single-necked flask of N dimethylformamide, ultrasonic treatment 35min, Let it fully dissolve.

[0061] (2) Transfer the solution in the flask to a polytetrafluoroethylene-lined stainless steel reaction kettle, place the temperature in a convection heating furnace to 110° C., and react for 45 hours; after the reaction is completed, wait for the reaction kettle to cool down, and collect the reaction product. The reaction product was transferred to a centrifuge tube, and centrifuged at 14800 rpm for 32 minutes to separate solid particles. Under the condition of normal temperature, the solid particles obtained by the reaction were washed with ethanol solution for 38 hours, and then the solid particles after washing were obtained by centrifugation using the above sepa...

Embodiment 3

[0064] (1) Dissolve 9 parts by mass of dried polyethersulfone and 3 parts by mass of polymerized monomer 2-methacryloyloxyethylphosphorylcholine (MPC) in 58 parts by mass of N,N-dimethyl 0.06 parts by mass of azobisisobutyronitrile was added to the mixed solution of formamide and 29.4 parts by mass of ethanol, and reacted at 60° C. for 24 hours under the protection of helium gas.

[0065] (2) After the reaction, 1.0 parts by mass of the metal-organic framework material prepared in Example 2 was added, stirred and dissolved at 40° C., vacuumized and degassed to form a casting solution.

[0066] (3) Fix the pretreated base film on the film scraping machine, and make the film according to the following parameters, the base film speed: 1.2m / s, the thickness between the scraper and the base film is 250 μm, cast the film After the liquid is scraped onto the surface of the base membrane, the base membrane containing the casting solution is immersed in water, and after washing with wa...

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Abstract

The invention provides a method for preparing a high-performance oil-water separation membrane, which comprises the following steps of: S1, preparing a mixed solution containing a polymeric monomer, an initiator, a membrane material and an organic solvent, and carrying out polymerization reaction; S2, adding a metal organic framework material into the reaction solution obtained in the step S1 to obtain a membrane casting solution; and S3, coating the surface of a base membrane with the membrane casting solution, and carrying out membrane forming treatment to obtain the high-performance oil-water separation membrane. The prepared oil-water separation membrane is high in hydrophilicity, mechanical property and mechanical strength, high in water flux and high in oil-water separation capacity, and the technical scheme is easy for industrial production and has a wide application prospect in the field of oily sewage treatment.

Description

technical field [0001] The invention relates to a method for preparing a high-performance oil-water separation membrane, in particular to a technical method for preparing an oil-water separation membrane by blending and polymerizing a metal organic framework material and a polymer monomer. Background technique [0002] With the continuous deepening of oil and gas fields and the large-scale application of tertiary oil recovery technology, the water content of crude oil production fluid is getting higher and higher, and the water content of crude oil production fluid in some blocks of Daqing Oilfield is as high as 95%. If the high water content in the produced fluid is not removed and separated, it will bring great harm to production, transportation and refining. It may even cause great harm to the local environment. [0003] At present, the commonly used oil-water separation methods include gravity sedimentation method, air flotation method, adsorption method, chemical demul...

Claims

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Application Information

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IPC IPC(8): B01D69/02B01D67/00B01D17/022C02F1/40C02F1/44
CPCB01D69/02B01D67/0002B01D67/0011B01D67/0013B01D71/68B01D71/34B01D17/085B01D17/02C02F1/44C02F1/40C10G33/06B01D2323/02B01D2325/36C10G2300/1033
Inventor 孟凡宁郦和生魏昕王成鸿
Owner CHINA PETROLEUM & CHEM CORP
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