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Method for increasing molecular weight of epichlorohydrin and organic amine polymer

A technology of epichlorohydrin and organic amines, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., and can solve the problems of low polymer molecular weight and long settling time

Active Publication Date: 2017-12-08
唐山冀油瑞丰化工有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The molecular weight of the polymer synthesized by this method is low, and the sedimentation time is long when treating sewage

Method used

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  • Method for increasing molecular weight of epichlorohydrin and organic amine polymer

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Add 50g of isopropanol as an organic solvent in a three-necked large flask with a stirring device, control the system temperature to be lower than 24°C, and mix epichlorohydrin and secondary amine according to 70%: 50% (epichlorohydrin: organic amine = 50%-80%: 30%-60%) ratio feeding reaction, adding a polymerization initiator of 0.01%-0.1% of the total mass of reactants for synthesis reaction, the synthesis reaction is carried out under anhydrous conditions, and the reaction temperature is controlled at 15°C; 4 h, after the polymerization reaction is completed, a brown-red paste water purifying agent for sewage treatment is obtained as a finished product.

Embodiment 2

[0016] Add 45g of ethanol as an organic solvent in a three-necked large flask with stirring, control the system temperature at 23°C, mix epichlorohydrin and secondary amines according to 50%: 30% (epichlorohydrin: organic amine = 50%-80 %: 30%-60%), the weight ratio of feeding reaction, adding a polymerization initiator of 0.01%-0.1% of the total mass of the reactants to the synthesis reaction, the synthesis reaction is carried out under anhydrous conditions, and the reaction temperature is controlled at 20 °C; the reaction is 5 h, After the polymerization reaction is completed, a brown-red paste-like water purifying agent for sewage treatment is obtained.

Embodiment 3

[0018] Add an appropriate amount of 45g of ethanol as an organic solvent in a three-necked large flask with stirring, control the temperature of the system at 24°C, and mix epichlorohydrin and secondary amines according to 80%: 60% (epichlorohydrin: organic amine = 50%- 80%: 30%-60%) ratio feeding reaction, adding polymerization initiator reaction of 0.01%-0.1% of the total mass of reactants, the synthesis reaction is carried out under anhydrous conditions, the reaction temperature is controlled at 18 °C; reaction 3 h, polymerization After the reaction is completed, a brown-red paste-like water purifying agent for sewage treatment is obtained.

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Abstract

A method for increasing the molecular weight of epichlorohydrin and organic amine polymers. Organic amine and epichlorohydrin are dissolved in the weight ratio of epichlorohydrin: organic amine=50%-80%: 30%-60% In an organic solvent, add a polymerization initiator, the mass concentration of the two raw materials in the reaction system is 5%-50%; the synthesis system is carried out under anhydrous conditions, the reaction temperature is 10-20°C, and the reaction time is 1-20 h , the obtained higher molecular weight polyepichlorohydrin amine cationic organic polymer water treatment agent. The molecular weight and cationicity of the polymer synthesized by this method are relatively high, and the sewage settling time can be shortened to 1-2 hours, the sewage oil removal rate can reach more than 80%, and the mechanical impurity removal rate can reach more than 90%.

Description

technical field [0001] The invention relates to a method for increasing the water purifying agent used in oilfield sewage treatment, in particular to a method for increasing the molecular weight of epichlorohydrin and organic amine polymers. Background technique [0002] Reducing the treatment temperature of the produced fluid at the oil transfer station and the combined station is the most direct and effective measure to save energy and reduce consumption in oilfields, but one of the technical difficulties faced is the problem of sewage purification under low temperature conditions. As a special chemical used in oilfield water treatment, water purifier can remove mechanical impurities and oil in oily sewage, and has the purification effect of oil-water separation. At present, the water purifiers used in oilfield water treatment are cationic organic polymer water treatment agents - polyepichlorohydrin amines, which mainly play the role of water purification through the mecha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/56
Inventor 陈勇倪银李佳慧
Owner 唐山冀油瑞丰化工有限公司