RCO Catalytic Oxidizers

Zeolite Rotor Concentrator with Catalytic Oxidizer for Large Low-Concentration VOC Airflow

Model: ZL-ZR-CO Series
Specification: Zeolite rotor concentration plus catalytic oxidation system
Size: Custom VOC concentration and oxidation system
Price: Contact us
Description: Zeolite rotor concentrator with catalytic oxidizer for high-airflow low-concentration VOC treatment with reduced oxidation airflow.
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Send airflow, pollutant type, material preference, voltage and destination. PureAirTek will recommend suitable industrial equipment and quote range.

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Zeolite Rotor Concentrator with Catalytic Oxidizer

A zeolite rotor concentrator with catalytic oxidizer treats large-volume, low-concentration VOC exhaust by adsorbing VOCs onto a rotating zeolite wheel, desorbing them into a smaller hot air stream, and sending the concentrated stream to an RCO catalytic oxidizer. This layout is used when direct RCO would be too large or too fuel-intensive for the original airflow.

Best-Fit Applications

Application	Typical Exhaust	Why This System Fits
Large spray coating lines	High airflow with low to medium VOC concentration	Concentration reduces the air volume entering the catalytic oxidizer.
Printing and packaging workshops	Solvent VOC with long operating hours	Rotor concentration can reduce operating energy compared with treating all airflow directly.
Electronics or precision manufacturing	Clean exhaust with trace VOC	Works when dust and mist are controlled before the rotor.
Automotive component coating	Large booth ventilation volume	Useful when capture airflow is much larger than VOC mass flow.

When It Is Not Suitable

This system is not ideal for exhaust with heavy dust, paint mist, high humidity, high boiling-point resin, silicone, tar, strong acid or alkaline mist, or VOC components that do not adsorb well on zeolite. It also needs stable safety design because the desorption stream has higher VOC concentration than the original exhaust.

Typical Process Flow

The process normally includes capture hood, ductwork, dry filter or pre-filter, zeolite rotor adsorption zone, desorption hot air system, concentration fan, RCO catalytic oxidizer, heat exchanger, main fan, control system and stack. Paint booth exhaust should pass through multi-stage filtration before reaching the rotor.

Key Selection Parameters

Parameter	What to Confirm	Design Impact
Total airflow	Original exhaust volume and fluctuation	Determines rotor size and main fan pressure.
VOC concentration	Average, peak and LEL percentage	Determines concentration ratio and RCO sizing.
VOC composition	Solvent names and boiling point range	Determines zeolite adsorption suitability and desorption temperature.
Pretreatment	Paint mist, dust, oil mist or moisture present?	Protects rotor channels and catalyst from blockage or poisoning.
Operating hours	Continuous or batch production	Controls heat recovery economics and maintenance planning.

Common Design Mistakes

Sending paint mist directly into the zeolite rotor.
Choosing concentration ratio without checking LEL safety margin.
Ignoring high humidity, which can reduce adsorption efficiency.
Assuming every VOC is suitable for zeolite concentration.
Comparing only equipment price instead of energy and filter replacement cost.

Quotation Data to Prepare

Prepare airflow, VOC composition, concentration range, temperature, humidity, dust or mist condition, operating hours, emission target, installation space, voltage and destination. Photos of the process and duct layout help PureAirTek decide whether zeolite rotor plus RCO is better than direct RCO, RTO or activated carbon.

Related Equipment

RCO Catalytic Oxidizer for medium-concentration VOC exhaust.
Industrial Dry Filter Box for paint mist protection before the rotor.
Zeolite Rotor Concentrator with RTO when thermal oxidation is the better downstream stage.

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