Brochure: Modular RETOX® Regenerative Thermal Oxidizer VOC Control Systems

The high degree of RETOX RTO Primary heat recovery (typically 95% primary heat recovery) acheived is the result of regenerative heat transfer. The VOC-laden process air enters a porous bed filled with high temperature ceramic heat transfer media. The incoming VOC laden process air is preheated by the first heat recovery bed, passes through a central combustion chamber where the hydrocarbons are oxidized to carbon dioxide and water vapor, and then exits a second heat recovery bed where heat is tranferred from the purified hot air back into the second bed. In order to avoid an uneven temperature distribution throughout the RTO oxidizer, the gas flow direction is changed at regular intervals by the automatic Airex poppet valve flow switching mechanism and PLC controls to maintain an even temperature profile between the two beds of RETOX RTO Heat Transfer Ceramic Media.