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Synthetic method for weak-acid adsorption resin suitable for heavy oil wastewater

A synthesis method and adsorption resin technology, which are applied in chemical instruments and methods, adsorption water/sewage treatment, other chemical processes, etc., to improve oil pollution resistance, good resistance to organic pollution, and improve working exchange capacity and ion exchange reaction. effect of speed

Inactive Publication Date: 2012-12-12
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above-mentioned technical problems, the purpose of the present invention is to provide a synthetic method of a weak acid adsorption resin, by adjusting the synthesis parameters of the resin to obtain a special weak acid adsorption resin suitable for heavy oily sewage, the weak acid adsorption resin has a strong anti- Pollution performance, can efficiently remove metal ions in water in heavy oily sewage with high organic content, so that it will not cause scaling problems in reuse thermal recovery boilers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a weak acid adsorption resin, which is prepared through the following steps:

[0031] Add 500mL of an aqueous solution (water phase) containing 2wt% gelatin and 15wt% sodium chloride into a 2L three-necked flask, stir, and control the stirring speed at 100-150rpm;

[0032] Mix 100g of acrylonitrile monomer, 12g of allyl methacrylate and 45g of isobutanol to obtain an oil phase, then add 1.0g of benzoyl peroxide to the mixed oil phase, and then add it to the three-necked flask containing the water phase , keep stirring while adding, after the addition is completed, raise the temperature to 50°C and keep it warm for 6 hours, then raise the temperature to 85°C and keep it warm for 12 hours to obtain polyacrylic acid white balls, and discharge;

[0033] Wash polyacrylic white balls with ethanol and dry them in the air, add ethanol twice the mass of polyacrylic white balls to make them fully swell, and then mix with sulfuric acid with a concentration...

Embodiment 2

[0043] This embodiment provides a weak acid adsorption resin, which is prepared through the following steps:

[0044] Add 500mL of an aqueous solution (water phase) containing 3wt% gelatin and 20wt% sodium chloride into a 2L three-necked flask, stir, and control the stirring speed at 150-200rpm;

[0045] Mix 100g of acrylonitrile monomer, 14g of allyl methacrylate and 50g of isobutanol to obtain an oil phase, then add 1.0g of benzoyl peroxide to the mixed oil phase, and then add it to the three-necked flask containing the water phase , keep stirring while adding, after the addition is completed, raise the temperature to 60°C and keep it warm for 6 hours, then raise the temperature to 90°C and keep it warm for 12 hours to obtain polyacrylic acid white balls, and discharge;

[0046] Wash the polyacrylic white ball with ethanol and dry it in the air, add ethanol 3 times the weight of the polyacrylic white ball to make it fully swell, and then mix it with sulfuric acid with a conc...

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Abstract

The invention relates to a synthetic method for weak-acid adsorption resin suitable for heavy oil wastewater. The synthetic method includes following steps: adding initiator into an oil phase; adding the oil phase added with the initiator into a water phase under stirring to obtain a mixture, heating up to 50 DEG C to 65 DEG C and maintaining for 6-8 hours, further heating up to 85 DEG C to 90 DEG C and maintaining for 12-15 hours, then cooling to obtain poly acrylic white balls, and extracting or cleaning for drying treatment; and subjecting the poly acrylic white balls after the drying treatment to swelling with ethanol at the temperature of 50 DEG C to 60 DEG C, mixing with sulfuric acid with a concentration of 50-70wt% at the temperature of 120 DEG C-140 DEG C for hydrolysis reaction, and then sequentially diluting, transforming and water-washing to obtain the weak-acid adsorption resin suitable for the heavy oil wastewater. The weak-acid adsorption resin synthesized by the method is quite good in resistance to organic pollution, improved in working conversion capacity and ion exchange reaction rate of the resin and suitable for serving as primary softener to adsorb most calcium and magnesium ions in the heavy oil wastewater.

Description

technical field [0001] The invention relates to a method for synthesizing a weak acid adsorption resin suitable for heavy oil sewage, and belongs to the field of synthesizing polymer materials for petroleum exploitation. Background technique [0002] When the weak acid adsorption resin is applied to heavy oily sewage, since the heavy oily sewage contains a large amount of background substances, such as humic acid, animal and vegetable oils and petroleum, these substances will be adsorbed on the surface of the resin by the lipophilic framework of the resin, forming a A layer of water-oil mixture slows down the diffusion rate of metal ions in the water to the interior of the resin, so that the concentration of ions in the effluent cannot be reduced to the ppb level, resulting in scaling problems caused by the reuse of thermal recovery boilers. [0003] The prior art provides many synthesis methods of weak acid resins to improve their performance. CN86101585A discloses a synth...

Claims

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Application Information

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IPC IPC(8): C08J9/28C08J7/14C08L33/20C08F220/44C08F220/40B01J20/26B01J20/30C02F1/28
Inventor 蒋生健谢加才刘喜林范英才孙守国董滨曲金明韩海龙
Owner PETROCHINA CO LTD
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