There are three main harmful substances in the exhaust gas emitted by paint spray booth manufacturers:

1. Oil-based paint: water droplets that carry paint particles; water-based paint: water droplets that dissolve the paint;

2. The paint particles are sprayed into the exhaust gas in the air independently;

3. The peculiar smell of the coating material in the vaporized state, the peculiar smell emitted by the thinner (curing agent for normal temperature coating), and the peculiar smell released during the reaction and curing process. As environmental protection becomes more and more stringent, the use of any kind of equipment alone can no longer meet environmental protection requirements, and secondary or tertiary dust removal and exhaust gas purification must be used.

Paint spray booth manufacturer

1. Water spray + photocatalysis + activated carbon adsorption

After the spray paint exhaust gas is cleaned by the water curtain cabinet, it plays a good role in cleaning and degrading the paint mist. The exhaust gas enters the water spray exhaust gas treatment tower, and after further purification by the wet swirl plate exhaust gas tower, it enters the photocatalytic deodorization equipment through the pressurized induced draft fan. Under the irradiation of high-energy ultraviolet rays, the chemical bonds of volatile organic compounds undergo various reactions (photochemical reactions) such as ring-opening and cleavage, which are degraded and converted into low-molecular compounds such as CO2 and H2O. Oxygen in the air is irradiated by high-energy ultraviolet light to produce ozone. Ozone absorbs ultraviolet light to produce oxygen free radicals and oxygen. Oxygen free radicals react with water vapor in the air to produce hydroxyl free radicals. Hydroxyl free radicals are a stronger oxidant. Organic waste gas such as alcohol, aldehyde, carboxylic acid, etc. is completely oxidized into inorganic substances such as water and carbon dioxide, and then enters the activated carbon adsorber for adsorption. After the exhaust gas is purified, it is discharged into the atmosphere through the pipeline to reach the standard. In order to achieve a good purification effect, after the waste gas is decomposed by the photocatalytic deodorization equipment, it takes 3 to 5 seconds to react in the pipeline.

Paint spray booth manufacturers

2. Water spray + adsorption method

During the spraying process, the spray paint exhaust gas will form atomized dust particles and volatile triphenylbenzene and other organic hazards under the action of the air pressure, with a higher concentration and a smaller particle size. If no pretreatment is performed, the micropores of the activated carbon will be blocked quickly, making the activated carbon ineffective. After the paint exhaust gas is cleaned by the water curtain cabinet, it plays a good role in cleaning and degrading the paint mist. The exhaust gas enters the water spray exhaust gas treatment tower, and after further purification by the wet swirl plate exhaust gas tower, it enters the activated carbon adsorption tower through the pressurized induced draft fan. The activated carbon tower is suitable for large flow and low concentration organic waste gas. Activated carbon adopts granular activated carbon, and its specific surface area (adsorption area) is as high as 500-1500m2/g, so it has high surface activated carbon and adsorption capacity. The discharged low-concentration organic gas is adsorbed on its active surface, and the purified gas is discharged from the high-altitude outer exhaust pipe.