Volatilization of Organic Solvents in Spray Coating and Catalytic Treatment of Exhaust Gas from Oven

Abstract

The percentage of solvents that volatilized during each phase, from spraying to drying, was estimated. The percentage clearly differed depending on the vapor pressure of solvents in coating material. When the coated material was dried without flash-off time after spraying, the concentration of organic components in a drying oven was considerably higher. A Pt/Co₃O₄–CeO₂ catalyst was highly effective for exhaust gas from the drying oven containing high concentrations of the aromatic hydrocarbons and fatty acid esters, achieving a conversion of around 90 %.