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Preparation method of high salinity heavy oil sewage deoiling water purifier

A technology of heavy oil sewage and high salinity, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of slow settling or floating speed, incomplete flocculation, salting out phenomenon, etc., and achieve good oil removal and water purification effect. , The effect of fast precipitation and low moisture content

Active Publication Date: 2014-03-05
克拉玛依市天明化工有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this product can effectively remove oil and impurities in heavy oil and super-heavy oil production liquid sewage, and has the advantages of fast and stable floc formation, but the flocs have wall adhesion and can be easily removed under high salinity. Polymer flocculants are prone to salting out, slow settling or floating speed, and incomplete flocculation

Method used

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  • Preparation method of high salinity heavy oil sewage deoiling water purifier
  • Preparation method of high salinity heavy oil sewage deoiling water purifier
  • Preparation method of high salinity heavy oil sewage deoiling water purifier

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Add 323.34kg dimethyldienylpropyl ammonium chloride and 710kg acrylamide to the reaction kettle, add 1550kg water to dilute to a weight concentration of 40%, control the temperature at 20-30°C, and adjust the pH range to 2.5 with hydrochloric acid -3.5, feed nitrogen protection, react at a constant temperature of 40°C for 30 minutes, add 0.52kg of initiator potassium persulfate-sodium bisulfite in a weight ratio of 2:1 mixture, and polymerize under nitrogen protection at 40°C 8- After 10 hours, the cationic polymer flocculant product, numbered as 1# flocculant, was obtained.

[0026] Add 30 kg of stearyl alcohol to the reaction kettle, 1.5 kg of potassium hydroxide catalyst to control the temperature at 110 to 120 ° C to control the pressure of the kettle to 0.2 to 0.3 MPa, pressurize nitrogen into 600 kg of ethylene oxide and propylene oxide for polymerization reaction to obtain oil head. Put 42kg of synthetic oil head into the reaction kettle, heat to 134-150°C, add 2...

Embodiment 2

[0029] Add 323.34kg of dimethyldienylpropyl ammonium chloride and 640kg of acrylamide to the reaction kettle, add 1529kg of water to dilute to a weight concentration of 40%, control the temperature at 20-30°C, and adjust the pH range to 2.5 with hydrochloric acid -3.5, feed nitrogen protection, react at a constant temperature of 40°C for 30 minutes, add 0.385kg of initiator potassium persulfate-sodium bisulfite in a weight ratio of 2:1 mixture, and polymerize under nitrogen protection at 40°C 8- After 10 hours, the cationic polymer flocculant product, numbered as 1# flocculant, was obtained.

[0030] Add 20kg of propylene glycol to the autoclave, control the temperature of 1.5kg of potassium hydroxide catalyst at 110-120°C to control the pressure of the autoclave to 0.2-0.3MPa, inject 500kg of propylene oxide into the autoclave for polymerization reaction to obtain oil head. Take 52kg of synthetic oil head and put it into the reaction kettle, heat it to 134-150°C, add 2.5kg of...

Embodiment 3

[0033] Add 323.34kg dimethyldienylpropyl ammonium chloride and 568.4kg acrylamide to the reaction kettle, add 1337.6kg water to dilute to a weight concentration of 40%, control the temperature at 20-30°C, and adjust the pH range with hydrochloric acid At 2.5-3.5, pass nitrogen protection, and after reacting at a constant temperature of 40°C for 30 minutes, add 0.267kg of initiator potassium persulfate-sodium bisulfite in a weight ratio of 2:1 mixture, and polymerize under the protection of nitrogen at 40°C After 8-10 hours, the cationic polymer flocculant product, numbered 3# flocculant, is obtained.

[0034] Add 20kg of propylene glycol into the reaction kettle, 1.5kg of potassium hydroxide catalyst and control the temperature at 110 to 120°C to control the pressure of the kettle to 0.2 to 0.3MPa, inject 500kg of propylene oxide into the reaction kettle for polymerization reaction to obtain oil head. Take 52kg of synthetic oil head and put it into the reaction kettle, heat it...

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Abstract

The invention relates to a high salinity heavy oil sewage treatment technology, which belongs to the design field of chemical treating agents for oil fields. The high salinity heavy oil sewage deoiling water purifier provided by the invention consists of cationic polymeric flocculant and nonionic polyether compound according to certain weight ratio, which is suitable for a high salinity sewage system and solves the salting-out problem of the system for polymeric flocculant. The deoiling water purifier provided by the invention has the advantages of high oil removal efficiency, quick sedimentation and good flocculation effect, and is a product with combination of oil removal function and water purification function, and is particularly suitable for heavy oil sewage, all kinds of oily wastewater such as oil refinery and the like, thereby having wide application prospect, significant social benefit and economic benefit.

Description

technical field [0001] The invention relates to a high-salinity heavy oil sewage treatment technology, which belongs to the field of oil field chemical treatment agent design. Background technique [0002] In the oil-water separation process of heavy oil emulsion, the oil-water density difference of heavy oil sewage is small; heavy oil sewage has high impurities and high water hardness; viscosity reducers are often added in the development process, and oily sewage not only contains a large number of cations and anions , making the composition of heavy oil sewage more complex, with high oil content and serious emulsification of sewage, which increases the difficulty of demulsification of heavy oil sewage; heavy oil sewage has greater viscosity, especially when the water temperature is low, The water temperature of heavy oil sewage is as high as 70-80°C; with the change of heavy oil thermal recovery method and the increase of mining life, the amount of heavy oil sewage rises r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/56
Inventor 王明宪刘莉慎娜娜王新龙许海涛李玉军杨利吴伟龙李琼红
Owner 克拉玛依市天明化工有限责任公司
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