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Cation-type hydrophobic association polymer and its preparation method and application

An associative polymer and hydrophobic association technology, which is applied in the field of environment and chemistry, can solve the problems of increasing sewage treatment costs and on-site construction difficulties, affecting the effect of crude oil electric dehydration, filter clogging, etc., and achieving good water treatment effects and products Good stability, strong adsorption and bridging ability

Inactive Publication Date: 2008-09-10
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, in the process of oil-water separation, this floc will carry a large amount of water into the oil phase, affecting the effect of electric dehydration of crude oil; in the process of sewage purification, it will cause frequent blockage of the filter, increase the cost of sewage treatment and the difficulty of on-site construction, etc.

Method used

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  • Cation-type hydrophobic association polymer and its preparation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add acrylamide, dimethyl diallyl ammonium chloride, cetyl trimethyl ammonium bromide, urea, deionized water into the reaction vessel, feed nitrogen and stir, then add butyl acrylate and initiator ( Potassium persulfate, sodium thiosulfate and azobisisobutyronitrile in a weight ratio of 2:1:1), after continuing to feed in nitrogen and stirring, react for 6 hours to prepare a cationic hydrophobic association polymer. Wherein the molar percentage of acrylamide and dimethyl diallyl ammonium chloride is 70:30, the weight ratio of cetyl trimethyl ammonium bromide is 0.5%, the urea content is 0.75%, reactant and deionized The weight percentage of water is 30:70, the mole percentage of butyl acrylate is 2%, and the initiator content accounts for 0.15% of the reaction monomer. The product is represented by No.1.

[0025] The specific preparation method is as follows:

[0026] (1) Add 14.80g of acrylamide and 14.42g of dimethyl diallyl ammonium chloride into the reaction vessel...

Embodiment 2

[0032] Add acrylamide, dimethyl diallyl ammonium chloride, cetyl trimethyl ammonium bromide, urea, deionized water into the reaction vessel, feed nitrogen and stir, then add butyl acrylate and initiator ( Potassium persulfate, sodium thiosulfate and azobisisobutyronitrile in a weight ratio of 2:1:1), after continuing to feed in nitrogen and stirring, react for 4 hours to prepare a cationic hydrophobic association polymer. Wherein the molar percentage of acrylamide and dimethyl diallyl ammonium chloride is 40:60, the weight ratio of cetyl trimethyl ammonium bromide is 0.5%, the urea content is 0.75%, reactant and deionized The weight percentage of water is 30:70, the mole percentage of butyl acrylate is 2%, and the initiator content accounts for 0.15% of the reaction monomer. The product is represented by No.2.

[0033] The preparation method was the same as in Example 1, but the difference was that the added acrylamide was changed to 6.66 g, the dimethyl diallyl ammonium chlo...

Embodiment 3

[0036] Add acrylamide, dimethyl diallyl ammonium chloride, cetyl trimethyl ammonium bromide, urea, deionized water into the reaction vessel, feed nitrogen and stir, then add butyl acrylate and initiator ( Potassium persulfate, sodium thiosulfate and azobisisobutyronitrile in a weight ratio of 2:1:1), after stirring with nitrogen gas, react for 8 hours to prepare a cationic hydrophobic association polymer. Wherein the molar percentage of acrylamide and dimethyl diallyl ammonium chloride is 70:30, the weight ratio of cetyl trimethyl ammonium bromide is 0.5%, the urea content is 0.75%, reactant and deionized The weight percentage of water is 20:80, the molar percentage of butyl acrylate is 2%, and the initiator content accounts for 0.15% of the reaction monomers. The product is represented by No.3.

[0037] The preparation method is the same as in Example 1, but the difference is that the added acrylamide is changed to 9.87g, the dimethyl diallyl ammonium chloride is changed to 9....

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Abstract

The invention discloses a cation type hydrophobic association polymer and a preparation method and application thereof. Through adopting acrylamide, dimethyl diallyl ammonium chloride and butyl acrylate as synthesis monomer, the cation type hydrophobic association polymer is made through a common free radical micelle polymerization method and making use of a composite initiation system and additive auxiliary agent urea. Moreover, the cation type hydrophobic association polymer, which has the characteristics of high molecular weight, excellent product stability, strong adsorption bridging capacity of colloid matter, good flocculation effect, wide application scope, less generated sludge and hydrophobic association function, etc., can be widely used in the treatment of oil field oily wastewater.

Description

technical field [0001] The invention relates to a hydrophobic association polymer and its preparation method and application, in particular to a cationic hydrophobic association polymer and its preparation method and application, and belongs to the technical field of environment and chemistry. Background technique [0002] At present, most of my country's oil fields are in the tertiary oil recovery stage of applying polymer flooding, and the polymers used are mainly high molecular weight partially hydrolyzed polyacrylamide. In the tertiary oil recovery process, due to the use of a large amount of polymers and other oilfield chemical additives, the produced fluid contains a large number of chemical substances, which increases the difficulty of the oil-water separation of the produced fluid and the treatment of oily sewage, resulting in the formation of treated sewage containing A certain amount of petroleum, chemical substances and mechanical impurities, etc., the water quali...

Claims

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Application Information

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IPC IPC(8): C08F220/56C08F226/02C02F1/56C08F220/18C02F103/10
Inventor 高宝玉李春晓高悦岳钦艳卢磊贾玉岩张永强
Owner SHANDONG UNIV
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