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.

Maintaining an RTO

What is the dwell time of a thermal oxidizer?

TOX typically have a 0.5 second to 1.0 second dwell time for most applications.

What does the burner do in an RTO?

The burner provides the heat required to raise the gas stream to the oxidation temperature needed to destroy VOCs.

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.

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.

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