Lacquer mist coagulant and its preparation and application

A technology of paint mist coagulant and high molecular polymer, which is applied in the field of environmental pollution control, can solve expensive problems, and achieve the effects of low cost, high yield, and excellent adsorption and bridging effect

Inactive Publication Date: 2011-05-11
SHANGHAI LICHANG ENVIRONMENTAL ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is expensive to effectively separate the paint from the water to prevent clogging the system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1, the preparation method of paint mist coagulant of the present invention comprises the following process steps:

[0036] 1. Melamine and formaldehyde are added to 120 parts by weight of water in 10 parts and 20 parts by weight respectively, and stirred to make it fully mixed; add 0.5 parts by weight of hydrochloric acid (37%), adjust the pH value of the mixture to 0.9, and heat to 95°C, react for 1.2 hours, cool to 50-55°C, add water to dilute to a concentration of 1.05g / ml, a solid content of 7-20%, and age for 3 hours to obtain component I;

[0037] ②Completely mix component I and ferric chloride at a weight ratio of 1:0.1 to obtain a paint mist coagulant.

Embodiment 2

[0038] Embodiment 2, the preparation method of paint mist coagulant of the present invention comprises the following process steps:

[0039] 1. Dicyandiamide and acetaldehyde are added to 130 parts by weight of water in 20 parts and 20 parts by weight respectively, and stirred to make it fully mixed; add 1 part by weight of sulfuric acid (98%), and adjust the pH value of the mixture to 1.0, heat to 60°C, react for 2 hours, cool to 50-55°C, add water to dilute until the intrinsic density is 1.05g / ml, the solid content is 7-20%, and aging for 5 hours to obtain component I;

[0040] ②Completely mix component I and ferric sulfate at a weight ratio of 1:1 to obtain the paint mist coagulant.

Embodiment 3

[0041] Embodiment 3, the preparation method of paint mist coagulant of the present invention comprises the following process steps:

[0042] ① Add 30 parts by weight and 45 parts by weight of glyoxal to 140 parts by weight of water, stir to make it fully mixed; add 2 parts by weight of phosphoric acid, adjust the pH of the mixture to 1.5, and heat to 70 °C , reacted for 1.5 hours, rapidly cooled to 50-55°C, added water to dilute to a concentration of 1.05g / ml, solid content of 7-20%, aged for 10 hours to obtain component I;

[0043] ②Completely mix component I and aluminum trichloride at a weight ratio of 1:5 to obtain a paint mist coagulant.

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PUM

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Abstract

The present invention discloses one kind of lacquer mist coagulant with excellent viscosity reducing and coagulating effect on both solvent and water thinned paint. The lacquer mist coagulant consists of nitrogen-contain linear polymer and amphoteric metal salt in the weight ratio of 1 to 0.1-1 to 20. The present invention also provides the preparation process of the lacquer mist coagulant, and the preparation process is simple, low in cost and high in yield. The lacquer mist coagulant of the present invention is applied in treating circular water of wet lacquer mist eliminating system.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution control, and relates to a paint mist coagulant in the treatment of circulating water in a wet spray booth and a coating production line; meanwhile, the invention also relates to a preparation method and application of the paint mist coagulant. Background technique [0002] In the automobile, home appliance, furniture industries and some plastic processing industries, most of the painting operations adopt modern spraying technology, and are carried out in closed container spray booths or spray paint workshops, and are equipped with corresponding air supply and exhaust systems, and wet paint mist removal systems. The main purpose of this wet paint mist removal system is: 1) remove overspray paint mist; 2) prevent paint mist from polluting the parts to be sprayed; 3) protect the health of the current spraying workers. The wet spray booth often used in painting operations uses water as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/56
Inventor 常立乔红姜海
Owner SHANGHAI LICHANG ENVIRONMENTAL ENG
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