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Recirculated wet-coating booth water treatment agent and treatment method

A treatment method and technology for a coating room, which are applied in the field of circulating water treatment agent and treatment in a wet coating room, can solve the problems of inability to obtain an effective coping method for the removal of high-concentration suspended matter components, insufficient effect, etc., and prevent clarification. , The effect of preventing unpleasant odors

Inactive Publication Date: 2017-02-22
HAKUTO CHEMICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] However, for the significant increase in the use of water-based paints in recent years and the complexity and diversification of the work in the painting room as mentioned above, the existing offensive odor countermeasures that mainly target oil-based paints have insufficient effects, and also Unable to obtain effective countermeasures for the removal of high-concentration suspended matter components

Method used

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  • Recirculated wet-coating booth water treatment agent and treatment method
  • Recirculated wet-coating booth water treatment agent and treatment method
  • Recirculated wet-coating booth water treatment agent and treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0098] Using the circulating water of a wet paint booth where water-based paints and oil-based paints are mixed in an automobile factory. In this painting room, water-based automotive water-based finish paint (manufactured by Nippon Paint Co.) and oil-based automotive solvent clear paint (manufactured by Kansai Paint Co.) are used for water-based paints, and the circulating water in the painting room has not been replaced for half a year. , with a strong unpleasant odor and a high concentration of suspended substances. Add 500L of circulating water to the painting room figure 1 In the circulating water tank 2 of the wet coating room shown in the test, the circulating water in the coating room is circulated at 100 L / min through the circulating pump 10, and the water is sent to the concentrated recovery tank 3 at 30 L / min by the liquid delivery pump 7 of the concentrated recovery tank. In the concentration recovery tank 3, the suspended matter in the circulating water is concen...

Embodiment 2

[0114] Towards figure 1 Add 500L of clean water to the circulating water tank 2 of the wet-type coating room shown in the test, circulate the circulating water in the coating room through the circulating pump 10 at 100L / min, and use the liquid delivery pump 7 of the concentrated recovery tank to flow to the concentrated recovery tank at 30L / min 3 Send water, concentrate the suspended matter in the circulating water by pressurized floating in the concentrated recovery tank 3, recover the concentrated oil sludge 8 and transport it to the outside of the system. With the amount of addition shown in Example 2 in Table 3, the additive agent shown in Example 2 in Table 3 was added to the system, and in the coating room 1, it was continuously added to the coating at 5 g / min for 5 hours a day. Install chamber circulating water to spray water-based paint and oil-based paint. Water-based paint for automobiles (manufactured by Nippon Paint) was used as the water-based paint, and solvent ...

Embodiment 3～13、 comparative example 4～6

[0116] In Examples 3 to 13 and Comparative Examples 4 to 6, except adding the additive medicament shown in each embodiment and each comparative example in Table 3 according to the addition amount shown in each embodiment and each comparative example in Table 3, with In Example 2, the treatment test (1) of the circulating water in the painting booth was similarly carried out, and the test results were obtained.

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Abstract

To provide a wet-coating booth water treatment agent and treatment method capable of solving the problems caused by the intense odor and high concentration of suspended components in recirculated booth water that result from significant increases in the use of aqueous paints and the increased complexity and diversification of operating modes in wet-coating booths. A recirculated wet-coating booth water treatment agent, which contains an Alpha-chlorobenzaldoxime compound represented by general formula (1), and a treatment method.

Description

technical field [0001] The invention relates to a treatment agent and a treatment method for circulating water in a wet coating room. More specifically, it relates to a treatment agent and treatment for circulating water in wet coating booths, which exhibits excellent effects of preventing bad smell and clarifying the circulating water in wet coating booths, and contains a specific α-chlorobenzaldehyde oxime compound method. Background technique [0002] Conventionally, as one of coating methods for automobiles, electrical products, etc., there is a spray coating method in which paint is sprayed on an object to be coated. In the spray coating method, in order to maintain the quality of the paint and protect the operating environment, the paint is sprayed in a wet paint booth. [0003] This wet-type coating booth is equipped with: a coating booth for spraying paint on the object to be coated, a channel with a fan for sucking air in the coating booth, and circulating the suc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00A01N37/52A01P3/00C02F1/50
CPCA01N37/52C02F1/50C02F2103/14C02F2303/02A01N25/00
Inventor 伊藤仁牛场舟一
Owner HAKUTO CHEMICAL CO LTD