Two abbreviated case studies demonstrate how selecting the right oxidizer can improve the process.

• An aluminum recycling plant utilized a gas-fired afterburner and gas-fired rotary kiln that was previous consuming 32 million BTUs per hour. An 18,000 scfm recuperative thermal oxidizer with primary and secondary heat exchanger was installed, which eliminated the need for the natural gas burner in the rotary kiln. The newly installed system now consumes only 10 million BTUs per hour due to the heat recovery generated by the primary and secondary heat exchangers.
• A coil-coating operation utilized a direct-fired afterburner and a portion of the exhaust gas to heat a 100' long curing oven, operating at line speeds up to 700 ft/min. The old system used 40 million BTUs per hour. A new 45,000 scfm regenerative thermal oxidizer with a secondary heat exchanger was installed, and resulted in a significantly reduced fuel consumption of 16 million BTUs per hour.