Environmental emission thresholds can sometimes be only observed by burning volatile organic compounds (VOC) released during the coating process. Burning oxidise VOCs into carbon-dioxide and water.
This takes place at 700-900°C in purely thermal equipment and at 350-450°C in a catalytic process.
Oxidation can be self-sustaining subject to the solvent concentration of discharged air (3-5 g/Nm3), because the solvents in the gas have sufficient thermal energy. Surface treatment lines usually require external power supply and economic heat recovery to maintain the process.
We help our partners to choose from catalytic and thermal afterburners, recuperative and regenerative heat recovery units, also any concentration boosting that may be required.