Regenerative thermal oxidizers are abatement systems for volatile organic compounds and hazardous air pollutants. Regenerative thermal oxidizers from Catalytic Products International, Lake Zurich, Ill., use a ceramic heat exchange media for high thermal efficiency, and the exhaust temperature is 75 to 100°F (41 to 55°C) higher than the inlet temperature.
In ambient temperature applications,
there is not a lot of heat left over in the regenerative thermal oxidizer's
stack to allow for efficient secondary heating. According to CPI, it has
developed a system that can affect the oxidizer’s thermal efficiency, raising
the stack temperature to provide efficient heating. In certain applications, says
the company, energy derived from VOCs is sufficient to offset the lower
efficiency, and the net result is savings that otherwise might have been lost
up the stack. The most common form of energy recovery is hot air delivered back
to the process. Other options include heating, makeup air, hot water or other
For more information about air pollution
control and energy conservation from CPI, visit www.cpilink.com.
Oxidizers Recover Energy
December 14, 2011