Thermal Oxidisers

Bronx Thermal Oxidisers and Regenerative Thermal Oxidisers are manufactured in Slovakia by our manufacturing division Bronx Process Technologies s.r.o. Bronx Thermal Solutions prides itself in engineering and manufacturing high-quality oxidisers for coil coating lines.

On a coil coating line, a thermal oxidiser is the process unit for air pollution control. Thermal oxidisers are typically used to destroy Hazardous Air Pollutants (HAPs) and Volatile Organic Compounds (VOCs) from industrial air streams. The oxidiser decomposes these gases at high temperatures and safely releases them into the atmosphere.

Bronx Thermal’s oxidisers are individually designed to ensure each system is perfectly matched to your process. Our systems deliver high energy efficiency and meet stringent VOC destruction performance standards.

Two types of oxidisers are manufactured by the Bronx Thermal Division:

• Recuperative Thermal Oxidisers
• Regenerative Thermal Oxidisers

Recuperative Thermal Oxidisers

The recuperative thermal oxidiser uses a metallic air-to-air heat exchanger (primary heat exchanger) to preheat curing oven exhaust gases before entering the VOC destruction chamber. Preheat temperatures typically range from 300°C to 500°C, depending on exchanger size.

Bronx Recuperative Oxidiser: Higher preheat temperatures require more capital investment but significantly reduce fuel consumption and ongoing operating costs.

After preheating, the oven exhaust gases enter the burner chamber, where they are heated to 760°C and held for the required dwell time to ensure VOC destruction before being discharged to the atmosphere.

Regenerative Thermal Oxidisers (RTO)

In an RTO, exhaust gases pass over hot refractory bricks before entering the VOC destruction chamber. This direct contact enables highly efficient preheating, achieving temperatures close to 760°C.

On most coil coating lines, sufficient solvent content enables auto-thermal operation, allowing the system to maintain oxidation temperatures without burner assistance.

As gases exit the chamber, they pass through a second canister of refractory bricks to transfer heat back into the system. After about 90 seconds, the flow direction reverses, maintaining system efficiency as the bricks alternate between heating and heat recovery.

In regions with strict stack emission sampling (e.g., Europe and Australia), a third canister is added to eliminate VOC spikes during flow reversal. In contrast, U.S. regulations permit two-canister systems due to differing sampling protocols, while maintaining equivalent emission standards.

Recuperative Thermal Oxidiser

Regenerative Thermal Oxidiser

Bronx Thermal Solutions works closely with every client to tailor the most effective and cost-efficient oxidiser for your coil coating line.

Thermal Upgrades

Thermal upgrades to your oxidiser and/or oven can be provided by the Bronx Thermal team to ensure your systems are running at peak performance. Recent upgrades on coil coating lines in the UK and Spain have resulted in improved energy efficiency and overall production reliability.

Our engineers work closely with you to assess your needs and deliver the most effective solution for your plant.

Contact us today to learn more about Bronx Thermal Oxidisers or to request a custom solution for your coating line.