Spray booth air purification

Physical adsorption: "Trapping and locking" through pore structure Activated carbon has a well-developed pore system (including micropores, mesopores, and macropores) with a specific surface area of 500-1500㎡/g, generating strong physical adsorption force (van der Waals force): Pollutant molecules such as volatile organic compounds (VOCs) (e.g., benzene, toluene, xylene, ester solvents) and paint mist particles (tiny resin droplets) generated in the spray booth will pass through the activated carbon layer with the air flow; These pollutant molecules are captured by the attractive force of the activated carbon pores and adsorbed on the inner walls of the pores, achieving separation from the air; Pores of different sizes have clear divisions of labor: micropores (<2nm) adsorb small-molecule VOCs, mesopores (2-50nm) capture paint mist particles and large-molecule solvents, and macropores (>50nm) act as diffusion channels for pollutants, improving adsorption efficiency.

Chemical adsorption: "Targeted decomposition" for specific harmful substances Some modified activated carbons (such as impregnated activated carbon) can achieve chemical conversion of specific pollutants in the spray booth by loading chemical reagents (such as potassium permanganate, sodium hydroxide): For acidic gases in spray paint exhaust (such as organic acids produced by coating curing agents), alkaline impregnated activated carbon can convert them into harmless substances through neutralization reactions; For some difficult-to-adsorb VOCs (such as formaldehyde), modified activated carbon can decompose them into carbon dioxide and water through catalytic oxidation, avoiding secondary pollution.

Odor removal: Dual effects of adsorption and neutralization The pungent odor in the spray booth mainly comes from incompletely reacted solvents and VOCs, which activated carbon removes in two ways: Physically adsorbing odor molecules to reduce the odor concentration in the air; Chemically adsorbing (such as impregnated activated carbon) to neutralize the chemical properties of odor molecules, eliminating odors at the source (rather than simply masking them).