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Amphoteric organic polymer compound and preparation method thereof

An organic polymer and compound technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of increased synthesis cost, high equipment requirements, single function, etc., and achieves the effect of fast dehydration speed, weakening strength, and high dehydration rate

Inactive Publication Date: 2017-01-04
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the demulsifiers used in most oil fields are basically polyether demulsifiers with a single function. This kind of demulsifier not only has a single function, but also has troublesome storage of raw materials and high requirements for equipment in the preparation process, which will inevitably increase the synthesis cost. Therefore, researchers at home and abroad have been devoting themselves to the development of broad-spectrum and multifunctional new oilfield chemicals.

Method used

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  • Amphoteric organic polymer compound and preparation method thereof
  • Amphoteric organic polymer compound and preparation method thereof
  • Amphoteric organic polymer compound and preparation method thereof

Examples

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preparation example Construction

[0028] see figure 1 , the preparation method of a kind of organic macromolecular compound of the present invention comprises the aminolysis reaction of acyl chloride and polymerization reaction, and concrete steps are as follows:

[0029] (1) Add a certain amount of p-aminobenzoic acid and ethyl acetate as a solvent into a three-neck flask equipped with a stirrer, a constant pressure dropping funnel, and a condenser, and slowly add it dropwise with a constant pressure funnel at 0°C to 40°C Appropriate amount of acryloyl chloride, and fully stirred, after reacting for 1h~3h, remove the solvent ethyl acetate by suction filtration to obtain p-acrylamide benzoic acid, and then use a certain concentration of sodium hydroxide solution (mass fraction is 30%~60%) And until the p-acrylamide benzoic acid is completely dissolved, the water is distilled off under reduced pressure to obtain sodium p-acrylamide benzoate; wherein, the molar ratio of p-aminobenzoic acid to acryloyl chloride i...

Embodiment 1

[0033] A kind of preparation of organic polymer compound, comprises the following steps:

[0034] (1) Add 13.7g of p-aminobenzoic acid and 25mL of ethyl acetate into a 100mL three-necked flask equipped with a stirrer, a constant pressure dropping funnel and a condenser, and slowly add 13.5g of p-aminobenzoic acid and 25mL of ethyl acetate dropwise at 0°C with a constant pressure funnel. Acryloyl chloride, and fully stirred, after reacting for 2 hours, remove the solvent ethyl acetate by suction filtration, and wash twice with ethyl acetate to remove unreacted p-aminobenzoic acid to obtain white powder of p-acrylamide benzoic acid, and dry it; then use A sodium hydroxide solution with a mass fraction of 30% was slowly added dropwise until the p-acrylamide benzoic acid was completely dissolved, the water was distilled off under reduced pressure, dried in vacuum, and pulverized to obtain a white powder of sodium p-acrylamide benzoate;

[0035] (2) Add 19.9g of sodium p-acrylamide...

Embodiment 2

[0037] A kind of preparation of organic polymer compound, comprises the following steps:

[0038] (1) Add 13.7g of p-aminobenzoic acid and 30mL of ethyl acetate into a three-necked flask equipped with a stirrer, a constant pressure dropping funnel and a condenser, and slowly add 9g of acryloyl chloride dropwise with a constant pressure funnel at 10°C, And fully stirred, after reacting for 1 hour, the solvent ethyl acetate was removed by suction filtration, and washed twice with ethyl acetate to remove unreacted p-aminobenzoic acid to obtain a white powder of p-acrylamide benzoic acid, which was then dried; then with a mass fraction of 35 % sodium hydroxide solution was slowly added dropwise until the p-acrylamide benzoic acid was completely dissolved, the water was distilled off under reduced pressure, vacuum dried, and pulverized to obtain a white powder of sodium p-acrylamide benzoate;

[0039](2) Add 19.9g of sodium p-acrylamide benzoate into the reaction kettle, and add 24...

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Abstract

The invention discloses an amphoteric organic polymer compound and a preparation method thereof. P-acrylamide sodium benzoate is added to a reaction kettle, deionized water, an initiator and a chelating agent are added, the mixture is evenly mixed, N2 is continuously introduced, methacryloyloxyethyl trimethyl ammonium chloride is added, the pH is adjusted to range from 7 to 9, polymerization is triggered at 30-70 DEG C for 3-6 h, and the amphoteric organic polymer compound is obtained after drying. A bipolymer is prepared through polymerization of DMC and P-acrylamide sodium benzoate, and the polymer has demulsification-flocculating performance; meanwhile, most oil-water interface films have negative charges, so that the added self-prepared polymer with positive charges can damage a double layer and weaken strength of interface films, so that purposes of demulsification, oil gathering and oil removal are achieved. The compound has the advantages that the compound has multiple effects, the use amount is small, oil removal and dehydration effects are good, the flocculation time is short and the like.

Description

technical field [0001] The invention belongs to the field of fine chemicals, and relates to an oil field wastewater treatment agent, in particular to an amphoteric organic polymer compound and a preparation method thereof. Background technique [0002] At present, with the increasing depletion of my country's oil resources, most oil fields have entered the middle and late stages of oil exploitation, and the water content of the produced crude oil has reached 70% to 80%. As the water content of the produced fluid increases, the corresponding amount of wastewater also increases Rapidly increasing, the generated wastewater has complex organic components, often with high oil content, high COD and high turbidity, and is difficult to degrade; if it is directly discharged, it will not only waste oil resources, but also cause groundwater pollution and damage water functions. Petroleum wastewater is a type of O / W wastewater. Due to the addition of various additives during the producti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56
CPCC02F1/56
Inventor 郭睿甄建斌王映月郭煜马兰宋博李云鹏土瑞香
Owner SHAANXI UNIV OF SCI & TECH
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