Concentration by an adsorption wheel and recuperative/regenerative thermal oxidizer
State of the art for huge exhaust air volumes with a low solvent content is concentration of the solvent by an adsorption wheel and a following reuse of the energy of the Volatile Organic Compounds (VOC) by oxidation.
Concentration by adsorption takes usually place in noncombustible zeolites.
If the VOC can be oxidized in a recuperative thermal oxidizer (TO) or in a regenerative thermal oxidizer (RTO) depends on the volume, the VOC-mixture and the concentration in the exhaust air. After concentration of the VOC the oxidation can be typically take place without adding of further fuel (RTO). In a thermal oxidizer (TO) is typically a fuel required.
Commonly the rejected heat can be reused and integrated into the local energy management system.