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Preparation method of composite polyacrylamide

A polyacrylamide and composite technology, which is used in the preparation of composite polyacrylamide, composite polyacrylamide and its use as a sewage treatment agent to achieve the effects of slowing down collapse, reducing dependence on oil routes, and high flocculation efficiency

Active Publication Date: 2022-04-05
XINXIANG BOYUAN WATER PURIFYING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the shortcomings of a single cationic polyacrylamide product in application, the purpose of the present invention is to provide a method for preparing a composite polyacrylamide, by introducing a natural polymer shell into the cationic polyacrylamide polymerization process Polysaccharide quaternary ammonium salt, which can form a composite system with better flocculation performance, higher water treatment efficiency and more green environmental protection, especially suitable for sludge and sewage treatment

Method used

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  • Preparation method of composite polyacrylamide
  • Preparation method of composite polyacrylamide
  • Preparation method of composite polyacrylamide

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Experimental program
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Effect test

Embodiment 1

[0033] Embodiment 1 Preparation of composite polyacrylamide

[0034] In parts by weight, the following raw material components are used:

[0035] 40 parts of acrylamide;

[0036] 30 parts of dimethyl diallyl ammonium chloride;

[0037] 0.005 parts of tetrasodium edetate;

[0038] 0.0001 part of oxalic acid;

[0039] 65 parts deionized water;

[0040] 5 parts of chitosan quaternary ammonium salt (92% degree of substitution, 1% water insoluble, 10.0% loss on drying, 1.0% residue on ignition).

[0041]Dissolve the chitosan quaternary ammonium salt in deionized water first, and then add the above-mentioned other raw material components in turn to form a uniform polymerization solution after dissolving evenly, add it to the polymerization kettle, and pass nitrogen gas to remove oxygen for more than 1 hour. Adjust the temperature of the system in the polymerization kettle at 2-3°C with a water bath, dissolve 0.00001 parts of potassium bromate and 0.000015 parts of sodium metabi...

Embodiment 2

[0043] Embodiment 2 Preparation of composite polyacrylamide

[0044] In parts by weight, the following raw material components are used:

[0045] 45 parts of acrylamide;

[0046] 25 parts of dimethyl ethyl allyl ammonium chloride;

[0047] 0.0025 parts of tetrasodium edetate;

[0048] 0.0002 parts of oxalic acid;

[0049] 70 parts deionized water;

[0050] 15 parts chitosan quaternary ammonium salt (95% degree of substitution, 1% water insoluble, 10.0% loss on drying, 1.0% residue on ignition).

[0051] Dissolve the chitosan quaternary ammonium salt in deionized water first, and then add the above-mentioned other raw material components in turn to form a uniform polymerization solution after dissolving evenly, add it to the polymerization kettle, and pass nitrogen gas to remove oxygen for more than 1 hour. Adjust the temperature of the system in the polymerization kettle at 2-3°C with a water bath, dissolve 0.000015 parts of potassium bromate and 0.00002 parts of sodium m...

Embodiment 3

[0053] Example 3 Preparation of composite polyacrylamide

[0054] In parts by weight, the following raw material components are used:

[0055] 50 parts of acrylamide;

[0056] 45 parts of acryloyloxyethyltrimethylammonium chloride;

[0057] 0.01 part of tetrasodium edetate;

[0058] 0.0003 parts of oxalic acid;

[0059] 55 parts deionized water;

[0060] 20 parts of chitosan quaternary ammonium salt (98% degree of substitution, 1% water insoluble, 10.0% loss on drying, 1.0% residue on ignition).

[0061] Dissolve the chitosan quaternary ammonium salt in deionized water first, and then add the above-mentioned other raw material components in turn to form a uniform polymerization solution after dissolving evenly, add it to the polymerization kettle, and pass nitrogen gas to remove oxygen for more than 1 hour. Adjust the temperature of the system in the polymerization kettle at 2-3°C through a water bath, dissolve 0.00002 parts of potassium bromate and 0.000025 parts of sodi...

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Abstract

The invention provides a preparation method of composite polyacrylamide, and further provides the composite polyacrylamide prepared by the preparation method and application of the composite polyacrylamide as a sewage treatment agent. According to the preparation method provided by the invention, the natural polymer modified chitosan quaternary ammonium salt is innovatively introduced in the polymerization process of the cationic polyacrylamide, so that the composite polyacrylamide of a unitary system is formed, and the cationic polyacrylamide and the chitosan quaternary ammonium salt realize higher water treatment efficiency through a synergistic effect; therefore, the method is especially suitable for sewage and sludge treatment. In addition, due to the use of natural polymers, under the same treatment effect, the dependence on a petroleum route is reduced, and the requirements of low carbon and environmental protection are better met. The composite polyacrylamide provided by the invention is excellent in performance, simple and convenient in preparation method and free of high cost, so that the composite polyacrylamide has a wide application prospect.

Description

technical field [0001] The invention relates to the field of polyacrylamide, in particular to a preparation method of composite polyacrylamide, the composite polyacrylamide thus prepared and its use as a sewage treatment agent. Background technique [0002] Polyacrylamide polymer has the advantages of good water solubility, high molecular weight, and easy bridging and flocculation of particles in aqueous solution, so it is widely used in sewage treatment and sludge treatment. It is obtained as a commonly used water treatment agent Lots of research. Polyacrylamide polymers are divided into cationic, anionic and nonionic. Among them, cationic polyacrylamide is mainly used to treat sewage and sludge containing negatively charged particles on the surface, such as municipal sludge. However, acrylamide, the monomer of polyacrylamide, is converted from acrylonitrile, and acrylonitrile is derived from petroleum routes. In today's increasingly tight petroleum resources, the high dep...

Claims

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Application Information

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IPC IPC(8): C08F251/00C08F220/56C08F226/02C08F220/34C02F1/56
Inventor 肖博文王引成毛彦科许志军牛富贵牛爱连
Owner XINXIANG BOYUAN WATER PURIFYING MATERIALS CO LTD