Regenerative Thermal Oxidizers (RTO)
A regenerative thermal oxidizer (RTO) is an air pollution control device that destroys VOCs and hazardous air pollutants (HAPs) in industrial exhaust air. By using regenerative heat recovery, it achieves high fuel efficiency, often operating with 95% heat recovery.
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RTO Case Studies
RTO Operation
Maintaining an RTO
Selecting an RTO
FAQs
Yes, RTOs can be designed to match your specific exhaust airstream characteristics. They are typically optimized for airstreams with solvent concentrations in the 0–10% Lower Explosive Limit (LEL) range. For higher concentrations up to 25% LEL, additional features such as hot gas bypass systems may be needed to ensure safe and efficient operation.
TOX typically have a 0.5 second to 1.0 second dwell time for most applications.
The burner provides the heat required to raise the gas stream to the oxidation temperature needed to destroy VOCs.
The refractory lining insulates the combustion chamber and helps retain heat. If the refractory becomes cracked, worn, or damaged, heat can escape from the chamber, forcing the burner to fire more frequently to maintain temperature. Over time, this increases fuel consumption and can create hot spots that shorten equipment life.
Regenerative thermal oxidizers (RTOs) have a heat recovery (efficiency) of 95% typically. This technology has the lowest operating cost of all thermal oxidizer systems – not to mention the longest service life and highest reliability. It’s even possible for an RTO to operate with no auxiliary fuel use whatsoever if process VOC concentration levels are >3-4% lower flammability limit (LFL).
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