The CDU-250 Ozone Destruct Device is a robust, catalytic ozone destruct unit designed to safely and efficiently convert ozone (O₃) into oxygen (O₂). Utilizing a true catalytic process, this device offers a maintenance-friendly, consumable-free solution for handling ozone in process gas streams.
What is the CDU-250?
The CDU-250 is a high-performance ozone destruct device engineered specifically for dry ozone gas flows up to 250 LPM. With all stainless steel internals and no moving parts, this system is designed for longevity and reliability in demanding ozone applications.
Key features include:
- Stainless steel construction for superior ozone compatibility.
- Reversible flow direction – no dedicated inlet or outlet.
- Vertical mounting required to ensure efficient gas flow and prevent short-circuiting.
- Replaceable catalyst media for long-term, cost-effective operation.
Ideal for Dry Off-Gas Applications
The CDU-250 is optimized for dry air or oxygen applications, typically found in industrial ozone systems where ozone is generated from dry oxygen sources. For these setups, the CDU-250 offers reliable destruction of ozone at high concentrations without the need for heaters or special internal modifications.
For humid or wet gas streams, the CDU-300—equipped with a heater—is the preferred choice.
Handling Humidity and Wet Gas
While the CDU-250 performs exceptionally with dry gas, ambient or wet air applications with humidity levels above 30% require different considerations:
- 30–50% Humidity: Expect reduced flow capacity.
- Above 50% Humidity: Use a heated ozone destruct unit (e.g., CDU-300) to prevent condensation on catalyst media.
Easy Maintenance with Replaceable Catalyst
Over time, the Carulite-200 catalyst inside the CDU-250 can become contaminated with impurities such as VOCs, acids, or dust. Fortunately, replacing the catalyst is simple:
- Remove the top cap to access the internal screen and gasket.
- Pour out old catalyst and replace with fresh media.
- Estimated maintenance time: Less than 30 minutes.
A complete CDU-250 Rebuild Kit is available, which includes new catalyst, screens, and gaskets for quick and efficient servicing.
Understanding Carulite-200 Catalyst
Carulite-200 is a manganese dioxide and copper oxide catalyst used in all CDU-Series destruct units. It’s highly effective and achieves 99.96% destruction efficiency at rated flow. Key considerations include:
- Safe to handle, though dusty—use appropriate PPE.
- Can be rejuvenated by drying at 500°F if moisture exposure occurs.
- Typically lasts 1–3 years, depending on gas purity and humidity.
- Non-hazardous and landfill safe unless contaminated.
Common Questions
Q: Is the CDU-250 right for my application?
A: Use the CDU-250 if your ozone gas stream is dry (dew point -40°F or lower) and ozone levels exceed 1 ppm. If your gas contains significant moisture, consider the CDU-300 with heating elements.
Q: How often should the catalyst be replaced?
A: For dry gas: expect multi-year service life. For wet gas: replace annually. Visual inspection and loss in efficiency are indicators.
Q: What happens if the catalyst gets wet?
A: You can dry it in an oven at 500°F. However, replacing it ensures maximum effectiveness and safety.
Conclusion
The CDU-250 Ozone Destruct Device is a dependable solution for high-concentration, dry gas ozone destruction. With replaceable catalyst media, stainless steel construction, and a straightforward design, the CDU-250 ensures your ozone processes remain safe, compliant, and efficient.
Need help selecting the right unit?
Contact Oxidation Technologies for expert guidance and support.
You can find this product here: https://www.oxidationtech.com/cdu-250.html
