Solving the “High Volume, Low Concentration” Problem
In industrial Waste gas treatment, the most expensive scenario is handling a massive volume of air containing a low concentration of Volatile Organic Compounds (VOCs). Treating this directly with a thermal incinerator requires heating vast amounts of clean air—a huge waste of fuel.
The solution? A zeolite rotor for VOCs. At Cadair.net, we specialize in using this concentration technology to turn a costly problem into a manageable, efficient process.
1. How a Zeolite Rotor Works
A zeolite rotor (or adsorption wheel) acts like a continuous sponge. It is coated with hydrophobic zeolite, a non-flammable mineral that selectively traps VOC molecules.
The 3-Step Process:
- Adsorption: The large, dilute exhaust stream passes through the rotor. VOCs are trapped in the zeolite honeycomb, and clean air is released.
- Desorption: A small stream of heated air passes through a small section of the rotor, releasing the trapped VOCs.
- Concentration: The result is a new airstream with 5x to 20x higher concentration but 1/10th to 1/20th the volume.
2. Why Choose Zeolite Over Activated Carbon?
When selecting an adsorption media for VOC abatement, zeolite offers distinct advantages over traditional carbon:
- Fire Safety: Zeolite is non-combustible, making it much safer for handling flammable solvents like ketones or cyclohexanone.
- Longevity: A zeolite rotor for VOCs can last 5–10 years, whereas carbon requires frequent replacement.
- Regeneration: It regenerates continuously online, without the need for offline steam stripping.
View ourZeolite Rotor Concentratorspecifications.
3. The Perfect Pair: Rotor + RTO
A rotor doesn’t destroy VOCs; it concentrates them. The concentrated stream must still be treated. This is where Cadair’s system integration shines. We direct the concentrated stream into a small, highly efficient Regenerative Thermal Oxidizer (RTO) or CO system. Because the volume is so small and the concentration is high, the RTO often runs on zero auxiliary fuel, utilizing the energy from the VOCs themselves.
See how we pair this with ourRTO Systems.
Conclusion: Efficiency by Design
Implementing a zeolite rotor for VOCs is the single most effective way to reduce the Capital Expenditure (CAPEX) and Operational Expenditure (OPEX) of your pollution control project.
At Cadair, we engineer the complete system—rotor, fan, and oxidizer—to ensure seamless performance.
Calculate Your Savings Send us your airflow (CFM) and VOC data. We will show you how much a rotor system can save you.
