Treatment method for paint spraying waste gas

A technology for waste gas and paint spraying room, which is applied to the spraying waste gas generated in the painting process of the spraying room, and the control field of spraying waste gas, which can solve the problems such as the failure to effectively control the spraying waste gas, the low concentration of organic substances, and the large air volume of the spraying waste gas. To achieve the effect of reducing operating costs, stable purification efficiency, and high purification efficiency

Active Publication Date: 2012-07-18
ZHEJIANG HUANTAI ENVIRONMENTAL PROTECTION EQUIP
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AI Technical Summary

Problems solved by technology

However, the air volume of spray paint exhaust gas is large, and the concentration of organic substances is low. It is directly treated by incineration, which has the disadvantages of large equipment investment and high operating costs.
[0014] So far, the exhaust gas from spray painting has not been effectively treated in our country. The reason is that there is no targeted package solution to the problems in the treatment of exhaust gas from spray paint.

Method used

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  • Treatment method for paint spraying waste gas
  • Treatment method for paint spraying waste gas
  • Treatment method for paint spraying waste gas

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no. 2 approach

[0072] The structure and method of this scheme are basically the same as those of Scheme 1, the difference lies in:

[0073] One is that in the circulation unit C, an air-conditioning unit can be added to adjust the temperature and humidity according to the requirements of the painting room temperature and humidity;

[0074] The second is to increase the special fresh air supply unit C: draw part of the fresh air 17 from the external environment, the air volume is about 0-10% of the total exhaust air volume Q of the spray booth 1, and pass through the primary filter 18 and the intermediate filter 19 to achieve high efficiency. After the filter 20 is filtered, it is sent into the spray booth 1 by the fan 21 (fresh air 17 of the fresh air unit C-primary filter 18-medium efficiency filter 19-high efficiency filter 20-fan 21-connection channel of the spray booth 1 They are all connected in series by pipelines), and this part of the gas needs to be supplemented in the worker's oper...

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Abstract

The invention belongs to the technical field of environmental protection and discloses a treatment method for paint spraying waste gas. The method is characterized in that paint spraying waste gas is treated through a circulating concentration manner, namely after large-flow and low-concentration gas discharged from a spraying chamber is treated by paint mist, most of the gas is circulated to the spraying chamber, and a small amount of the gas is discharged after being purified; and as paint spraying is performed, the concentration of gas in the spraying chamber increases gradually, and then large-flow gas is concentrated into small-flow gas to be purified, so that the purification efficiency, the stability and the security of waste gas can be improved advantageously, and the investment and running cost of treatment equipment can be reduced at the same time. The method has the advantages that the discharge flow rate of waste gas can be reduced, and paint spraying waste gas can be treated effectively to meet the national requirements of discharge of 'three wastes'.

Description

technical field [0001] The invention belongs to the technical field of painting waste gas treatment, and in particular relates to a method for treating the painting waste gas generated during the painting process of a spray booth. Background technique [0002] Spray paint waste gas is widely produced in furniture manufacturing, shoemaking, automobile production, machinery manufacturing, home appliances, electromechanical, plastic hardware and other production fields. The painting process generally produces two kinds of pollutants: one is paint mist, the paint is atomized into particles under the action of high pressure, but the paint cannot fully reach the surface of the painted object during spraying, and some paint particles disperse with the airflow to form paint mist; the other is Organic waste gas, organic solvent (thinner) is used to dilute the paint, but the organic solvent will not adhere to the surface of the painted object with the paint, and will be completely rel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/00
Inventor 曾荣辉王奇志
Owner ZHEJIANG HUANTAI ENVIRONMENTAL PROTECTION EQUIP
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