Regenerative thermal oxidizing is an industrial process for the treatment of exhaust air that has been contaminated with volatile oxidizing compounds (VOC’s). These gas streams are usually produced by processes requiring ventilation, such as, painting booths, printing and paper mills, just to mention a few.
Regenerative Thermal Oxidizers (RTO’s), have become a common name in the air pollution industry, and with good reason. This technology has provided general industry with a consistent and reliable solution to plant emissions solutions for over 35 years.
Since RTOs were first introduced in the 1970’s, the technology has evolved substantially and many improvements have been made that provide enhanced reliability, greater flexibility, heat recovery options and a reduction of the overall life cycle costs of the RTO.
Typical RTO Configuration and Function Schematic
A – Voc’s enter RTO Forced Draft Fan
B – Pneumatic Poppet Valves Control VOC Flows to RTO
C – Ceramic Heat Exchanger Bed #1
D – RTO Burner
E – Combustion Chamber
F – Ceramic Bed #2
G – Flow to Exhaust Stack and Test Ports
H – Diagnostic Controls and Telemetry
I – Purified Exhaust (h2o Vapor) Exits RTO to Atmosphere
Heat Recovering Options
Heat recovery options are an important element offered by the RTO systems available in the market place, as they reduce the operating costs of the equipment and enhance capacities and efficiencies. Many options are available from manufacturers, but the most important issue, is the end use applications to make these recoveries economically feasible implementations, depending on the region where the plants are located. Refer to “White Paper” and “Harvesting the Spent Power of the RTO” for an expanded explanation of opportunities.
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