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Polymer material, preparation method thereof and application thereof to oil removal

A technology of polymer materials and coalescing degreaser, which is applied in the direction of separation method, liquid separation, grease/oily substance/floating matter removal device, etc., can solve the problems of cumbersome regeneration process, high oil content, high water pressure, etc. Achieve the effect of avoiding various side effects and good degreasing effect

Active Publication Date: 2012-03-07
王颖华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Membrane filtration method requires high water pressure, so the cost of equipment and infrastructure is high; air flotation method and biological method will produce secondary pollution during the treatment process, and follow-up processes are required, and the oil content in the effluent is still relatively high; adsorption method The typical representative is activated carbon adsorption. Although the oil absorption effect is good, it must be regenerated after reaching the saturated adsorption capacity. It is necessary to use steam to elute the oil through the activated carbon adsorption layer. Wastewater still cannot be used directly, and discharge will still cause harm; the coalescence method is a method that uses the difference in affinity between oil and water to coalesce materials to separate. When oily wastewater passes through the coalescing material, the oil particles are captured by the coalescing material and stay on the surface of the material When the oil film increases to a certain thickness, the oil film falls off under the action of hydraulic force and buoyancy, and merges and coalesces into larger oil particles. The density of oil is smaller than that of water, and the oil particles are separated by gravity separation. separated from water
[0004] The key to the coalescence method is the coalescence material, such as polypropylene (PP) and polyvinyl chloride (PVC), but polypropylene is often made into polypropylene fiber, and polyvinyl chloride is restricted by the polymerization process, and the particles are very small and powdery. These coalescing materials require high pressure or special components when used, the operation is cumbersome, and the oil removal effect is not good

Method used

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Experimental program
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Effect test

preparation example Construction

[0040] The preparation method of polymer material provided by the invention comprises:

[0041] a, the water phase comprising water, dispersant and auxiliary dispersant and the oil phase comprising the organic compound of -C=C-, the organic compound of -C=C- and initiator are mixed to carry out suspension polymerization to prepare into the matrix polymer,

[0042] The weight ratio components contained in the water phase are water: dispersant: auxiliary dispersant = 800~1000: 0.5~3.0: 0.05~0.2, and the weight ratio components contained in the oil phase are organic compounds containing -C=C- : organic compound containing -C=C-: initiator = 0.75~0.98: 0.02~0.25: 0.003~0.01, the weight ratio of oil phase and water phase is 1: 4~6.

[0043] The dispersant is one or both of inorganic dispersant or organic dispersant, the inorganic dispersant is one or more of silicate, carbonate or phosphate, and the organic dispersant is polyethylene Alcohol, gelatin, carboxymethylcellulose or poly...

Embodiment 1

[0060] (1) Polymerization: Add 18 liters of pure water to a 50-liter polymerization kettle, heat to 45°C, add 10 g of magnesium carbonate, 20 g of gelatin and 0.15 g of methylene blue under stirring, and add 3 kg of benzene Ethylene, 1kg divinylbenzene, 20g benzoyl peroxide mixed oil phase. Close the reactor, feed clean compressed air into the reactor, and keep the gas phase pressure in the reactor at 0.02MPa. Turn on the stirring, adjust the liquid beads to an appropriate particle size, raise the temperature to 80°C, keep warm for 12 hours, then raise the temperature to 100°C, keep warm for 20h, filter, wash, dry, and sieve to obtain 2.57kg of white balls with a particle size of 0.5-0.8mm.

[0061] (2) Sulfonation: Add the spheres obtained after polymerization into a 50-liter reaction kettle, add 10kg of 105% oleum, heat up to 110°C, keep warm for 16 hours, cool down, slowly add pure water dropwise, and draw out 1 / 2 3 liquid, continue to add pure water dropwise, operate in t...

Embodiment 2

[0067] (1) Polymerization: Add 20 liters of pure water into a 50-liter polymerization kettle, heat to 40°C, add 10g of calcium carbonate, 20g of polyvinyl alcohol and 0.15g of petroleum calcium sulfonate under stirring, and add 3kg The oil phase formed by mixing propylene, 1kg isoprene, and 20g azobisisobutyronitrile. Close the reactor, feed clean compressed air into the reactor, and keep the gas phase pressure in the reactor at 0.04MPa. Turn on the stirring, adjust the liquid beads to an appropriate particle size, raise the temperature to 90°C, keep warm for 9 hours, then raise the temperature to 120°C, keep warm for 18h, filter, wash, dry, and sieve to obtain 2.78kg of white balls with a particle size of 0.5-0.8mm.

[0068] (2) Sulfonation: Put the sphere obtained after polymerization into a 50-liter reaction kettle, add 10kg of sulfur trioxide, raise the temperature to 110°C, keep it warm for 16 hours, lower the temperature, slowly add pure water dropwise, and draw out 1 / 3 ...

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Abstract

The invention provides polymer material comprising matrix polymer and a hydrophilic group or hydrophilic groups on matrix polymer. The matrix polymer is formed by the polymerization of organic compound containing -C=C- and organic compound containing -C=C-...-C=C-, wherein the number of the C in the organic compound containing -C=C- is 2 to 10, and the number of the C in the organic compound containing -C=C-...-C=C- is 4-15. The hydrophilic group or hydrophilic groups can be one or more of the sulfonic acid group, the cyano group, the tertiary amine group, the quaternary ammonium group or thehydroxyl group. The polymer material has larger specific surface area, the matrix of the polymer material is hydrophilic, and the surface of the polymer material is provided with a certain number of hydrophilic groups. When the oil film has a certain thickness, the oil film can be separated from the surface of the spheroidal material under the action of the drag force of the water stream to become large oil droplets to ascend to the water level. The polymer material has good oil removal effect, avoids various avoid side effects caused by the addition of the demulsifier. The polymer material does not need to be regenerated and can be used for removing oil continuously.

Description

technical field [0001] The invention relates to oil removal technology for oily wastewater, in particular to a polymer material used as an oil removal coalescing material, a preparation method of the polymer material and a method of using the polymer material for oil removal. Background technique [0002] Oily wastewater refers to wastewater containing fat and various oils, which is produced along with various life and production activities, such as petrochemical condensate, hydrometallurgical extraction residue, ship ballast water, and food industry wastewater. If oily wastewater is discharged directly into rivers and lakes without treatment, it will pollute the water body, affect the survival of aquatic organisms, and affect the natural landscape. If it is used for agricultural irrigation, it will block the soil gap and hinder the growth of crops. Carcinogenic hydrocarbons in oil will also pass through fish and shellfish. The enrichment of pollutants endangers human health...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F291/00C08F8/36C08F8/30C08F2/18C08F2/20C02F1/40
Inventor 王颖华
Owner 王颖华