Regenerative Thermal Oxidizers (RTO)

An installed regenerative thermal oxidizer unit

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.

Regenerative Thermal Oxidizers (RTO) are the technology of choice for most applications due to its high VOC destruction efficiency, low fuel use and long system life.
Is the RTO designed for easy installation at our facility?

Yes, our RTOs are typically skid-mounted and pre-assembled to minimize field welding and on-site labor. This simplifies installation and helps reduce overall turnkey project costs.

Does the RTO main fan use a variable frequency drive (VFD)?

Yes, most RTO systems are equipped with a VFD on the main fan. VFDs are important for efficient operation, allowing for volume turn-down, improved energy savings, and idle-mode operation when full airflow isn’t needed.

How often should I replace ceramic media?

How often ceramic media needs to be replaced depends on several factors such as whether there are any acids or particulates present in the airstream, VOC (volatile organic compound) concentration, RTO airflow, and the type of media in use. When not exposed to adverse operating conditions, ceramic media beds can have a life of 5-10 years. When adverse conditions are present, the media may need to be replaced more often. Contact our service department to schedule an inspection.

Our process shifted to more water-based and less solvent-based, and now the oxidizer uses much more gas. Can this be improved?

We can evaluate your heat exchanger, whether metal recuperative or ceramic regenerative, to see if upgrading to a more efficient type is possible. Adding a catalyst might also help reduce gas usage. In some cases, replacing the oxidizer with a more efficient system is the best option. We can check our inventory for suitable units or design a custom system tailored to your needs.

Is the RTO optimized for my exhaust airstream?

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.

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You can also call Buster at 920-309-0725 or send us an email.