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Organic polymeric 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. Water balance and other issues, to achieve the effect of excellent molecular hydrophilicity and hydrophobicity, high cationic degree

Active Publication Date: 2022-03-22
神美科技有限公司
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  • 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 polymeric flocculant and preparation method thereof
  • Organic polymeric flocculant and preparation method thereof
  • Organic polymeric 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-branch 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 add the mixture of cyanuric chloride and solvent, control the temperature at 20-45°C for 4-12 hours, remove the solvent by rotary evaporation und...

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Abstract

The invention provides an organic polymeric flocculant and a preparation method thereof, the organic polymeric flocculant has a comb-shaped hammer-shaped molecular structure with high cation density, and cyanuric chloride, dimethylamine, allyl chloride and hydrochloric acid are used for preparing a novel cationic monomer with high cation density, multi-branched star shape and high space rigidity steric hindrance. And carrying out copolymerization reaction on the novel cationic monomer, acrylamide, allylamine hydrochloride and a linear cationic monomer to prepare the high-cationic-density polymeric flocculant with a comb-shaped hammer-ball-shaped molecular structure. The dendritic star-shaped cationic monomer in the structure of the polymeric flocculant has higher cation density compared with the traditional linear cation; due to the highly branched and six-membered ring molecular structure of the cationic monomer, the hydrophilic and hydrophobic properties of molecules are improved, meanwhile, the cationic monomer has a high-steric-hindrance rigid structure, and the molecular chain is more stretched. By enhancing the rigid space structure in molecules and cooperating with higher cation density, bridging, netting and adsorption effects are promoted, and the flocculation performance is greatly improved.

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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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