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.
What industrial applications are best for regenerative thermal oxidizers?

Clean process airstreams with high air flow and low VOC content (<10% LFL) are ideal applications. Higher VOC concentrations can be tolerated, as well as organic/inorganic particulates with proper planning and design, and possibly filters. See our case studies for a sample of possible applications.

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.

What can we do if there is a risk of ceramic media plugging due to condensing VOCs?

Using a bake-out feature can help prevent and remove organic compound buildup in the ceramic media, reducing the risk of plugging and maintaining efficient operation. A preheater or recirculatioin loop are also possible mitigation methods.

What is the dwell time in a regenerative thermal oxidizer?

Regenerative thermal oxidizers (RTOs) typically have a 0.5 second to 1.0 second dwell time for most applications.

Can the flow capacity of ceramic media be increased?

It depends on some design factors that need to be scrutinized but typically, no. Advancements in new structured media designs can sometimes increase the thermal efficiency and reducing pressure drops through the media beds. This can sometimes can provide a couple percentage points of capacity increases over RTOs that utilize saddle ceramic media.

Request A Quote

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