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Organic polymer flocculant and preparation method thereof

An organic polymer and flocculant technology, applied in chemical instruments and methods, flocculation/sedimentation water/sewage treatment, water/sludge/sewage treatment, etc., can solve the conflict between cation degree and molecular weight to limit the rationality of molecular structure, affinity and sparseness Water-based balance and other issues, to achieve the effect of excellent molecular hydrophilicity and hydrophobicity, high cationic degree

Active Publication Date: 2022-04-22
神美科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For this reason, the technical problem to be solved by the present invention is to provide an organic polymer flocculant and its preparation method. There are defects in cationic organic macromolecule flocculants such as cationic degree and molecular weight conflict limit, molecular structure rationality, hydrophilic-hydrophobic balance, etc.

Method used

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  • Organic polymer flocculant and preparation method thereof
  • Organic polymer flocculant and preparation method thereof
  • Organic polymer flocculant and preparation method thereof

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preparation example Construction

[0039] The preparation method of organic macromolecule flocculant of the present invention, comprises the steps:

[0040]S1. Synthesis of star-shaped cationic monomer with high ion density and rigid structure

[0041] A new cationic monomer with high cation density, multi-branched star shape and high steric rigidity was prepared by using cyanuric chloride, dimethylamine, allyl chloride and hydrochloric acid.

[0042] S1.1: Preparation of star skeleton by nucleophilic substitution reaction and tertiary amination

[0043] Add dimethylamine, solvent and acid-binding agent sequentially into a four-necked bottle with a condenser, a constant pressure dropping funnel, a thermometer and a mechanical stirrer, protect with nitrogen gas, stir evenly, and control the pH value at 8 to 9.5; The molar ratio of methylamine: cyanuric chloride is 3:1, slowly drop the mixture of cyanuric chloride and solvent, control the temperature at 20-45°C, preferably 20-40°C, more preferably 25-35°C, furth...

Embodiment 1

[0068] This embodiment provides an organic polymer flocculant, referring to the above preparation method, the preparation process is as follows:

[0069] S1. Preparation of star-shaped cationic monomer:

[0070] A new cationic monomer with high cation density, multi-branched star shape and high steric rigidity was prepared by using cyanuric chloride, dimethylamine, allyl chloride and hydrochloric acid.

[0071] S1.1: Preparation of star skeleton by nucleophilic substitution reaction and tertiary amination

[0072] Add dimethylamine, solvent and acid-binding agent sequentially into a four-necked bottle with a condenser, a constant pressure dropping funnel, a thermometer and a mechanical stirrer, protect with nitrogen gas, stir evenly, and control the pH value at 8 to 9.5; The molar ratio of methylamine: cyanuric chloride is 3:1, slowly drop the mixture of cyanuric chloride and solvent, control the temperature at 20-45°C for 4-12 hours, remove the solvent by rotary evaporation ...

Embodiment 2

[0080] This embodiment provides an organic polymer flocculant, referring to the above preparation method, the preparation process is as follows:

[0081] S1. Preparation of star-shaped cationic monomer:

[0082] A new cationic monomer with high cation density, multi-branched star shape and high steric rigidity was prepared by using cyanuric chloride, dimethylamine, allyl chloride and hydrochloric acid.

[0083] S1.1: Preparation of star skeleton by nucleophilic substitution reaction and tertiary amination

[0084] Add dimethylamine, solvent and acid-binding agent sequentially into a four-necked bottle with a condenser, a constant pressure dropping funnel, a thermometer and a mechanical stirrer, protect with nitrogen gas, stir evenly, and control the pH value at 8 to 9.5; The molar ratio of methylamine: cyanuric chloride is 3:1, slowly drop the mixture of cyanuric chloride and solvent, control the temperature at 20-45°C for 4-12 hours, remove the solvent by rotary evaporation ...

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Abstract

The invention provides an organic polymer flocculant and a preparation method thereof, which has a high cationic density and a comb-shaped chain spherical molecular structure, and is prepared with cyanuric chloride, dimethylamine, allyl chloride and hydrochloric acid and has a high cationic density, New cationic monomers with multi-branched star shape and high steric rigidity, and then prepared high cationic density, comb-shaped streptosphere molecules by copolymerization of new cationic monomers with acrylamide, allylamine hydrochloride and linear cationic monomers Structured polymer flocculant. The dendritic star cationic monomer in the polymer flocculant structure has a higher cationic density than the traditional linear cationic; the highly branched and six-membered ring molecular structure of the cationic monomer improves the hydrophilicity and hydrophobicity of the molecule, and has high Rigid structure with steric hindrance, the molecular chain is more stretched. By enhancing the rigid space structure in the molecule, combined with a higher cation density, it promotes bridging, netting and adsorption, and greatly improves the flocculation performance.

Description

technical field [0001] The invention belongs to the technical field of organic polymer compounds, and in particular relates to an organic polymer flocculant and a preparation method thereof. Background technique [0002] Coagulation sedimentation method is an economical and simple water treatment method and process, widely used in domestic and foreign water pollution treatment, sludge dehydration, tap water, sewage reuse and resource utilization and other purification treatment engineering fields. The performance of flocculant is the key factor to determine the efficiency of coagulation and sedimentation, the cost of process operation and the quality of water purification. [0003] The flocculant is divided into inorganic flocculant and organic flocculant according to the component category. Among them, the inorganic flocculant is mainly iron and aluminum salts. The floc density is relatively large and easy to settle, but its dosage and sludge production are often large. Or...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/56C08F226/02C02F1/56C02F11/147
CPCC08F220/56C02F1/56C02F11/147C08F226/02
Inventor 周继柱马凯李雁鸿柯建怡孙松厚冯春晖王国瑞冯嵩石伟杰
Owner 神美科技有限公司