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Preparation and application of high-efficiency paint mist coagulant

A paint mist coagulant and high-efficiency technology, applied in the field of environmental pollution control, can solve the problems of affecting the normal operation of the purification system, increasing the number of circulating water replacements, reducing the purification efficiency of circulating water, etc., to improve the coating operation environment and facilitate subsequent treatment , low cost effect

Inactive Publication Date: 2012-02-15
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The "overspray" paint itself adheres to the walls of the water tank, pipes and pumps due to its high viscosity. After a long period of accumulation, it will form a larger paint ball to block the pipes, which will affect the normal operation of the purification system and also cause pollution. Affect the quality of spraying, reduce the purification efficiency of circulating water, and increase the replacement times of circulating water

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0018] Add 3 parts of quaternized hydroxyethyl cellulose to 100 parts of water to dissolve, add 20 parts of aluminum sulfate, add 1 part of dodecyltrimethylammonium chloride, and stir evenly at room temperature to obtain the detackifier A.

[0019] Anionic polyacrylamide with a molecular weight of 15 million was added to water at room temperature and stirred for 8 hours to form a solution with a mass concentration of 0.1%, and the floating agent B was obtained.

[0020] Sodium hydroxide is added into water, stirred and dissolved to form a solution with a mass concentration of 4%, and the regulator C is obtained.

[0021] Add 10mL of the above-mentioned regulator C into a colorless and transparent plastic bottle with 1L of tap water, then add 1mL of agent A and shake well, add more than 10 drops of paint (alkyd varnish) with a straw or needle, cover the bottle cap, and shake vigorously up and down Ten seconds. Add 8mL of agent B, cover the bottle cap, shake it vigorously up an...

example 2

[0023] Add 4 parts of quaternized starch to 100 parts of water to dissolve, add 15 parts of ferric chloride and 1.5 parts of polyoxyethylene alkylamine, and stir evenly at room temperature to obtain detackifier A.

[0024] Add polyacrylic acid with a molecular weight of 12 million into water at room temperature and stir for 8 hours to form a solution with a mass concentration of 0.2%, and then the floating agent B is obtained.

[0025] Potassium hydroxide is added to water, stirred and dissolved to form a solution with a mass concentration of 6%, and the regulator C is obtained.

[0026] Add 10mL of the above-mentioned regulator C into a colorless and transparent plastic bottle with 1L of tap water, then add 1mL of A agent and shake well, add more than 10 drops of paint (alkyd varnish) with a straw or needle, cover the bottle cap, and shake it vigorously up and down for ten minutes. few seconds. Add 8mL of agent B, cover the bottle cap, shake it vigorously up and down for mor...

example 3

[0028] Add 5 parts of polydimethyldiallyl ammonium chloride to 100 parts of water to dissolve, add 10 parts of polyferric sulfate and 0.5 part of coconut oil diethanolamide, and stir evenly at room temperature to obtain detackifier A with a molecular weight of 15 million Amphoteric polyacrylamide is added to water and stirred at room temperature for 8 hours to form a solution with a mass concentration of 0.1%, which is the floating agent B

[0029] Sodium silicate is added into water, stirred and dissolved to form a solution with a mass concentration of 5%, and the regulator C is obtained.

[0030] Take the above-mentioned regulator C and add it into a colorless and transparent plastic bottle with 1L of tap water to adjust the pH to 9. Then add 1mL of LA agent and shake well, add more than 10 drops of paint (alkyd varnish) with a straw or needle, cover the bottle cap, and shake vigorously up and down for more than ten seconds. Add 8mL of agent B, cover the bottle cap, shake i...

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Abstract

The invention relates to a paint mist coagulant. The paint mist coagulant has good anti-adhesion and coagulation effects on water-soluble and fat-soluble paints and is particularly applied to circulating water treatment of a wet paint mist removing system. The paint mist coagulant comprises an anti-adhesion agent A, a flotation agent B and a regulator C which are used simultaneously, wherein the anti-adhesion agent A is formed by combining water-soluble quaternary ammonium cationic polymer, amphoteric metal salt or polymer of the amphoteric metal salt, and a surfactant, has high electrical neutralization property, can quickly neutralize paint particle charges, and coats paint particles to make the viscosity of the paint particles lost; the flotation agent B is anionic polymer with the molecular weight of 8,000,000 to 25,000,000, has a strong coagulation effect, and can aggregate the paint particles of which the viscosity is lost; and the regulator C is used for regulating the pH of circulating water, controls the pH value of the circulating water to be between 7 and 10 commonly, and has small using amount. The paint mist coagulant is low in price, the process is stable, the total sewage discharge amount is small, and continuous production can be ensured.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, and relates to the application of a paint mist coagulant in the treatment of circulating water in wet spray booths and coating production lines. Background technique [0002] With the development of modern coating technology, the amount of paint is increasing day by day, usually there will be a lot of paint that cannot be applied to the painted workpiece and become "overspray" paint, and the amount of "overspray" is as high as 25%-60%. These paints contain a large amount of volatile organic solvents that are harmful to human health and need to be cleaned up in time. This "overspray" paint is often allowed to enter the circulating water since it is difficult to clean up when it is left on the ground. The organic solvent is taken out of the outdoor due to the water circulation of the indoor sink and the outdoor sink, reducing the health damage to the workers. The "overspra...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 董锐王路明李远兵郑雪琴孙晓斌张建勋谢杉杉
Owner YANCHENG INST OF TECH
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