Activated carbon spray painting exhaust gas treatment equipmentExhaust gas purification treatment device
Activated carbon spray painting exhaust gas treatment equipmentIt is a dry exhaust gas treatment equipment. Composed of a box body and an adsorption unit loaded inside the box body. According to the number of adsorption units and air volume, different specifications can be combined. Activated carbon waste gas purifiers can treat various types of waste gases by selecting different fillers, mainly used for purifying organic waste gases such as paint.
The exhaust gas from paint spraying mainly consists of two parts: liquid paint mist and gaseous VOC. For liquid paint mist, a paint mist removal device should be used; But for insoluble VOCs, the mature industrial technology should still be the "activated carbon adsorption+photocatalytic oxidation desorption combined exhaust gas purification system".
Currently, 80% of paint spray booths in developed countries in Europe and America use dry paint mist purification, one important reason being the comprehensive consideration of environmental protection. In addition, dry paint mist purification ensures spray painting performance, purification efficiency, and reduces secondary pollution.
Spray painting technology is applied in industries such as machinery, electrical equipment, household appliances, automobiles, ships, furniture, etc. Spray paint raw materials - Coatings are composed of non-volatile matter and volatile matter. Non volatile matter includes film-forming substances and film-forming substances, while volatile matter refers to solvents and diluents (mainly xylene). The organic gases in the spray paint exhaust come from the volatilization of solvents and diluents. Organic solvents will not adhere to the surface of the spray paint and will be completely released during the spray paint and curing process to form organic exhaust gas. The amount of xylene waste gas evaporated during the painting process accounts for about 30% of the diluent usage, and another 70% evaporates during the drying process.