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Liquid organic high polymer coagulant and preparation method thereof

An organic polymer and flocculant technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of low effective content of products and cumbersome process, and achieve no unpleasant smell, complete production reaction, and enhanced charge density Effect

Inactive Publication Date: 2009-09-23
DALIAN ECONOMY & TECH DEV ZONE LIJIA CHEM PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has the disadvantages of complicated process and low effective content of the product

Method used

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  • Liquid organic high polymer coagulant and preparation method thereof
  • Liquid organic high polymer coagulant and preparation method thereof
  • Liquid organic high polymer coagulant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Fully dissolve dimethylaminoethyl acrylate in distilled water with a pH of 4, add quaternary ammonium salt, the molar ratio of quaternary ammonium salt to dimethylaminoethyl acrylate is 1:5; keep the temperature at 20-40°C by circulating cooling, stir The reaction is complete in 3 hours, and the temperature is raised to 90°C within 1 hour. At the same time, nitrogen gas is introduced to eliminate the interference of oxygen, and acrylamide monomer, emulsified oil and initiator are added to carry out polymerization reaction. The mixture of acrylamide monomer and dimethylaminoethyl acrylate The molar ratio is 1:8, the ratio of acrylamide, quaternary ammonium salt and dimethylaminoethyl acrylate is 20% of the total output, the emulsified oil addition is 0.1kg / L, and the initiator addition is 0.01mol / L. Stir continuously for 2 hours at a temperature of 95-105°C;

[0058] The consumption of distilled water whose pH is 4 is 60% of output;

[0059] After the end of the reactio...

Embodiment 2

[0067] Fully dissolve dimethylaminoethyl acrylate in distilled water with a pH of 6, add quaternary ammonium salt, the molar ratio of quaternary ammonium salt to dimethylaminoethyl acrylate is 5:1; keep the temperature at 20-40°C by circulating cooling, stir The reaction is complete in 3 hours, and the temperature is raised to 90°C within 1 hour. At the same time, nitrogen gas is introduced to eliminate the interference of oxygen, and acrylamide monomer, emulsified oil and initiator are added to carry out polymerization reaction. The mixture of acrylamide monomer and dimethylaminoethyl acrylate The molar ratio is 8: 1, the ratio of acrylamide, quaternary ammonium salt and dimethylaminoethyl acrylate is 50% of the total output, the amount of emulsified oil added is 0.1kg / L, and the amount of initiator added is 0.01mol / L. Stir continuously for 2 hours at a temperature of 95-105°C;

[0068] The amount of distilled water with a pH of 6 is determined according to the final product ...

Embodiment 3

[0077] Fully dissolve dimethylaminoethyl acrylate in distilled water with a pH of 5, add quaternary ammonium salt, the molar ratio of quaternary ammonium salt to dimethylaminoethyl acrylate is 1:1; keep the temperature at 20-40°C by circulating cooling, stir The reaction is complete in 3 hours, and the temperature is raised to 90°C within 1 hour. At the same time, nitrogen gas is introduced to eliminate the interference of oxygen, and acrylamide monomer, emulsified oil and initiator are added to carry out polymerization reaction. The mixture of acrylamide monomer and dimethylaminoethyl acrylate The molar ratio is 1: 3, the ratio of acrylamide, quaternary ammonium salt and dimethylaminoethyl acrylate is 40% of the total output, the emulsified oil addition is 0.1kg / L, and the initiator addition is 0.01mol / L. Stir continuously for 2 hours at a temperature of 95-105°C;

[0078] The consumption of the distilled water whose pH is 5 is 40%.

[0079] After the end of the reaction, qu...

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Abstract

The invention relates to a liquid organic high polymer coagulant and a preparation method thereof. A dimethylaminoethyl acrylate is dissolved in distilled water, quaternary ammonium is added to the distilled water according to the mol ratio of 1:5 to 5:1, the mixture is stirred for 3 hours under the temperature of 20-40 DEG C, and the temperature of the mixture is raised to 90 DEG C within 1 hour; then nitrogen is led into the mixture, an acrylamide monomer, emulsible oil and an evocating agent are added to the mixture, the mol ratio of the acrylamide monomer to the dimethylaminoethyl acrylate is 1:8 to 8:1, the obtained mixture is continuously stirred for 2 hours under the temperature of 95-105 DEG C, the temperature of the obtained mixture is lowered to 80 DEG C within 1 hour after reaction is completed, and the obtained mixture is stirred for 2 hours when the temperature is preserved at 70-80 DEG C; miscible liquids of organic oil and a surface active agent are added into the obtained mixture, the temperature of the obtained mixture is raised to 100 DEG C, the obtained mixture is stirred for 1 hour under the temperature of 95-105 DEG C and also stirred for 1 hour under the temperature of 90-95 DEG C, then the obtained mixture is continuously stirred for 1 hour to enable the temperature of liquid inside a reaction kettle to be lowered to 40 DEG C, and finally the obtained mixture is stirred for 2 hours. The invention has the advantages of high solid content, heavy molecular weight, high charging intensity, high cationic degree and short dissolving time.

Description

technical field [0001] The invention relates to an organic polymer flocculant and a preparation method thereof. Especially for the rapid separation of mud and water in the sludge concentration treatment of urban sewage treatment plants, a high-efficiency cationic organic flocculant and its preparation method have been developed. Background technique [0002] The flocculation and dehydration technology in sludge treatment refers to the addition of flocculants to the sludge, and the separation of inorganic and organic pollutants in the state of colloid or suspended solids in the water through physical and chemical actions to form aggregates and separate them from water. At present, flocculants for sludge dewatering are mainly solid or colloid positive polyacrylamide products. The production process of this kind of solid particle products is complicated, easy to be damp and agglomerated, and the solubility is poor, resulting in poor flocculation effect and high dosage of chemi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/34C08F220/56C08F2/24C02F1/56
Inventor 吕广明张雷
Owner DALIAN ECONOMY & TECH DEV ZONE LIJIA CHEM PRODS
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