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Polymer emulsion for polymer-containing sewage treatment and preparation method thereof

A polymer emulsion and sewage treatment technology, applied in water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, mining waste water treatment, etc. , to achieve the effect of clear water, compact floc, and small dosage

Inactive Publication Date: 2012-05-23
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Commonly used water treatment agents, such as polyaluminum, polyacrylamide, and their complexes, usually have problems such as high dosage, loose flocs formed, and difficult sedimentation when treating poly-containing sewage. Therefore, after treatment The sewage water quality cannot meet the standard

Method used

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  • Polymer emulsion for polymer-containing sewage treatment and preparation method thereof
  • Polymer emulsion for polymer-containing sewage treatment and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Weigh 16.2g AM, 43.8g DAC, 86.4g water, 6.1g MOA-3, 2.6g MOA-9 and 57.6g odorless kerosene into a 250mL three-necked flask in turn, and stir at room temperature at high speed (1200r / min) After emulsifying for one hour, a uniform and stable white emulsion was obtained. Then, in a water bath at 45°C, pass nitrogen to the prepared emulsion for 30 minutes to remove oxygen, add 0.06 g of initiator V-50 at a stirring speed of 260 r / min, and react at a constant temperature for about 5 hours to obtain a colorless and transparent polymer Physical emulsion (slightly yellowish when there are impurities). The solid content of the obtained emulsion was 45%, the cationic degree of the polymer was 50%, and the intrinsic viscosity of the polymer was 1324ml / g.

Embodiment 2

[0014] Weigh 12g AM, 48g DAC, 86.4g water, 6.1g MOA-3, 2.6g MOA-9 and 57.6g odorless kerosene into a 250mL three-necked flask in turn, and emulsify a hours, a uniform and stable white emulsion was obtained. Then, in a water bath at 45°C, pass nitrogen to the prepared emulsion for 30 minutes to remove oxygen, add 0.06 g of initiator V-50 at a stirring speed of 260 r / min, and react at a constant temperature for about 5 hours to obtain a colorless and transparent polymer animal emulsion. The solid content of the obtained emulsion was 45%, the cationic degree of the polymer was 60%, and the intrinsic viscosity of the polymer was 1073ml / g.

Embodiment 3

[0016] Weigh 8.4g AM, 51.6g DAC, 86.4g water, 6.1g MOA-3, 2.6g MOA-9 and 57.6g odorless kerosene into a 250mL three-necked flask in turn, and stir at room temperature at high speed (1200r / min) After emulsifying for one hour, a uniform and stable white emulsion was obtained. Then, in a water bath at 45°C, pass nitrogen to the prepared emulsion for 30 minutes to remove oxygen, add 0.06 g of initiator V-50 at a stirring speed of 260 r / min, and react at a constant temperature for about 5 hours to obtain a colorless and transparent polymer animal emulsion. The solid content of the obtained emulsion was 45%, the cationic degree of the polymer was 70%, and the intrinsic viscosity of the polymer was 1174ml / g.

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Abstract

The invention relates to a polymer emulsion for polymer-containing sewage treatment, which is used for processing oil field sewage and a preparation method thereof. The polymer emulsion can have strong adsorptive capacity on colloidal particles and oil droplets in sewage so that the oil droplets are inverted and rapidly copolymerized. Acrylamide and acryloyloxy ethyl trimethyl ammonium chloride are adopted as cationic monomers, fatty alcohol-polyoxyethylene ethers MOA-3 and MOA-9 are adopted as emulsifying agents, tasteless kerosene is adopted as a continuous phase, water is adopted as a dispersed phase and 2,2'-azodissobutyl amidinodihydrochloride is adopted as an initiating agent; and the solid content of the obtained emulsion is 40-50 percent, the cationic degree of a polymer is 50-70 percent, and the characteristic viscosity number of the polymer is 1,026-1,378ml / g. The preparation method comprises the steps of: adding the raw materials into a reactor and stirring to form emulsion; and raising the temperature and introducing nitrogen for removing oxygen, and adding the initiating agent to react at constant temperature for five hours to obtain the polymer emulsion. The emulsionfor treating polymer-containing sewage has the advantages of less medicament dosage, high oil and water separating speed, compact flocculating body, obvious water purifying effect, and the like, and can be used for treating the polymer-containing sewage of an oil field.

Description

technical field [0001] The invention relates to a sewage treatment technology, in particular to a flocculant for treating oil field sewage, a polymer emulsion used for the treatment of poly-containing sewage and a preparation method thereof. Background technique [0002] With the popularization and application of polymer flooding technology in major oil fields, the amount of polymer-containing sewage is increasing year by year, and its treatment has become an urgent problem to be solved. Due to the presence of polymers in sewage, on the one hand, the viscosity of sewage increases, thereby enhancing the stability of colloidal particles in water and increasing the settling time required for sewage treatment; The interface charge increases, leading to the stable existence of small oil droplets in the produced water. Therefore, the difficulty of oil-water separation is increased, and the oil content in the treated sewage exceeds the standard. [0003] Commonly used water treat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/34C08F220/56C08F2/24C08F4/04C02F1/56C02F101/32C02F103/10
Inventor 段明方申文张健赵文森郭海军
Owner SOUTHWEST PETROLEUM UNIV
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