Dispersion polymeric acrylamide emulsion and its application in oil field produced liquid treatment

A polyacrylamide and production fluid technology, applied in the direction of washing/replacing pulp treatment fluid, flocculation/sedimentation water/sewage treatment, reinforcement addition, etc.

Active Publication Date: 2008-04-16
HAISO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

and large molecular weight

Method used

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  • Dispersion polymeric acrylamide emulsion and its application in oil field produced liquid treatment
  • Dispersion polymeric acrylamide emulsion and its application in oil field produced liquid treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] In a 100L reactor with a stirrer, a temperature controller and a water-cooled condenser, add:

[0061] Acrylamide 5.0kg

[0062] Polymethacryloxyethyl dimethylbenzyl ammonium chloride (IV=300ml / g) 5.0kg

[0063] Hyperbranched polyester with hydroxyl terminal 0.02kg

[0064] Polyethylene glycol 600 10.0kg

[0065] Sodium chloride 5.0kg

[0066] Ammonium phosphate 27.0kg

[0067] Ammonium persulfate 0.006kg

[0068] Sodium bisulfite 0.006kg

[0069] Chelating agent disodium ethylenediaminetetraacetic acid (EDTA) 0.04kg

[0070] Deionized water balance

[0071] The above materials total 100kg,

[0072] In addition to the initiator, the reactor containing the above-mentioned other materials is kept at a constant temperature of 15°C, stirred at 500 rpm, and then the solution is bubbled with 1000 ml / min of nitrogen to remove oxygen in the system. After nitrogen is blown for about 15 minutes, 0.006kg of ammonium persulfate and 0.006kg of sodium bisulfite are added. The polymerizat...

Embodiment 2

[0073] Example 2 (comparative example, no hyperbranched polymer AB is added to the system 2 )

[0074] In a 100L reactor with a stirrer, a temperature controller and a water-cooled condenser, add:

[0075] Acrylamide 5.0kg

[0076] Polymethacryloxyethyl dimethylbenzyl ammonium chloride (IV=300ml / g) 5.0kg

[0077] Polyethylene glycol 600 0.2kg

[0078] Sodium chloride 5.0kg

[0079] Ammonium phosphate 27.0kg

[0080] Ammonium persulfate 0.006kg

[0081] Sodium bisulfite 0.006kg

[0082] Chelating agent disodium ethylenediaminetetraacetic acid (EDTA) 0.04kg

[0083] Chain transfer agent sodium formate 0.04kg

[0084] Deionized water balance

[0085] The above materials total 100kg,

[0086] In addition to the initiator, the reactor containing the above-mentioned other materials is kept at a constant temperature of 15°C, stirred at 500 rpm, and then the solution is bubbled with 1000 ml / min of nitrogen to remove oxygen in the system. After blowing nitrogen for about 15 minutes, add 0.00...

Embodiment 3

[0088] In a 100L reactor with a stirrer, a temperature controller and a water-cooled condenser, add:

[0089] Acrylamide 6.8kg

[0090] Methacryloxyethyl dimethylbenzyl ammonium chloride (80% aqueous solution) 4.0kg

[0091] Polymethacryloxyethyl trimethylammonium chloride (IV=120ml / g) 10.0kg

[0092] Hyperbranched polyester with hydroxyl terminal 0.1kg

[0093] Polyethylene glycol 200 0.8kg

[0094] Sodium chloride 2.0kg

[0095] Sodium sulfate 10.0kg

[0096] Ammonium hydrogen phosphate 28.0kg

[0097] 2,2'-Azobis(2-amidinopropane) dihydrochloride 0.02kg

[0098] Chelating agent disodium ethylenediaminetetraacetic acid (EDTA) 0.04kg

[0099] Chain transfer agent sodium formate 0.04kg

[0100] Deionized water balance

[0101] The above materials total 100kg,

[0102] In addition to the initiator, the reactor containing the above-mentioned other materials is kept at a constant temperature of 45° C., stirred at 400 rpm, and then the solution is bubbled with 1000 ml / min of nitrogen ...

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Abstract

The present invention relates to a waterborne polyacrylamide emulsion, the preparation thereof and the application thereof. The waterborne polyacrylamide emulsion is prepared by the free radical polymerization of the nonionic monomer with the double bond or combined polymerization of the nonionic monomer with the double bond with the cation, using multi inorganic salt solution as the mediums and using polyelectrolyte as the stabilizer. The appearance of the product is cream white, the particle diameter is about 10-100 Mum, the emulsion has high solution rate, and the production process without any organic solvent is innocuous and environmental protection. Compared with the dry powder and the microemulsion of the traditional polyacrylamide, the emulsion of the invention is safe and convenient in use, is capable of being used in the treatment of the oilfield produced liquid combined with the demulsifier to promote the oil-water separation to increase the dehydration of crude oil, wherein the water quality of the dehydrate water. The product can be used as an oil-water separating agent of the oily wastewater in industry and as a water purificant, also be used for sewerage treatment of the oil field and the city as an organic flocculent, and be used in paper making field as a filter aid, a retention aid, a paper strengthening agent, etc.

Description

Technical field [0001] The invention relates to a polyacrylamide water-dispersed emulsion and a synthesis method thereof. The dispersed polymer emulsion is mainly used in combination with a demulsifier in the treatment of oilfield produced liquid; as an oil-water separator and water purification agent for industrial oily wastewater; and as an organic Flocculants are used in oilfield sewage treatment and urban sewage treatment; in the field of papermaking, they are used as filter aids, retention aids and paper enhancers. Background technique [0002] Synthetic polyacrylamide polyelectrolytes mainly include cationic polyacrylamide copolymers, anionic polyacrylamide copolymers and amphoteric polyacrylamide copolymers. Cationic polyacrylamide is mainly used as oil-water separation agent, flocculant for sewage treatment, sludge dehydrating agent, paper enhancer, filter aid and retention aid, etc. Anionic polyacrylamide is mainly used as oil displacement polymer for tertiary oil recove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F120/56C08F2/44C08F2/38C08F4/40C08F4/04C02F1/56D21C9/06D21H21/18
Inventor 李绵贵蒋拥华夏峥嵘杨灿汪海波
Owner HAISO TECH
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