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Recuperative Thermal Oxidation

A Recuperative Thermal Oxidation system provides an effective solution for removing volatile organic compounds (VOCs) from exhaust air while reducing energy consumption through intelligent heat recovery.

How recuperative thermal oxidation works:

A fan first draws the exhaust air into the unit, where it is preheated in a recuperative heat exchanger, often of the shell-and-tube type. The exchanger uses heat from the hot, cleaned air to warm the incoming contaminated air. The preheated air then enters the oxidation chamber, where a burner raises it to the temperature required to oxidize the pollutants.

In the oxidation chamber, the VOCs undergo thermal oxidation and are converted into harmless water vapour and carbon dioxide. The hot, cleaned air then passes through the heat exchanger again and transfers its heat to the incoming air. This substantially reduces fuel consumption and increases the energy efficiency of the entire system.

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Key benefits of our recuperative thermal oxidation system:

  • High VOC removal efficiency: Removes more than 99% of harmful emissions from exhaust air.
  • Treatment of high pollutant concentrations: Can safely treat concentrations of up to 20% LEL (lower explosive limit), including highly concentrated pollutants.
  • Energy savings: Heat recovery reduces fuel consumption and operating costs.
  • Flexible application: Suitable for a broad range of pollutants and small to medium air volumes.

An ideal solution for:

  • Different pollutant types: Effective for a broad range of volatile organic compounds and other pollutants.
  • Small and medium-sized industrial operations: Optimized for small to medium exhaust-air volumes.

What is recuperative thermal oxidation, and how does it differ from other exhaust-air treatment methods?

Recuperative thermal oxidation is a process in which harmful volatile organic compounds in exhaust air are combusted at high temperatures and converted into harmless water vapour and carbon dioxide. Its defining feature is a recuperative heat exchanger that recovers heat from the cleaned air to preheat the incoming air. Compared with other methods, this increases energy efficiency and reduces operating costs.

What pollutant concentrations can the system treat?

Our system can safely treat high pollutant concentrations of up to 20% of the lower explosive limit (LEL). It is therefore also suitable for processes with high VOC levels where large pollutant loads must be removed safely and efficiently.

Is recuperative thermal oxidation suitable for smaller operations with lower exhaust-air volumes?

Yes. The system is designed to operate efficiently with small to medium exhaust-air volumes. It is an ideal choice for smaller industrial applications requiring reliable and energy-efficient exhaust-air treatment.

What operating-cost and energy savings does the system provide?

Heat recovery in the heat exchanger substantially reduces the fuel required to reach the oxidation temperature. This lowers operating costs and improves energy efficiency, providing a clear economic benefit for your operation.

How does the system help protect the environment?

By removing more than 99% of VOCs from the exhaust air and converting them into harmless substances, the system helps meet stringent emission limits and contributes to cleaner air. Energy savings from heat recovery also reduce the operation’s overall environmental footprint.

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