Concentrators for Air Pollution Control

Rotory Concentrators are designed to take large volumes of air (typically 20,000 to 60,000 SCFM per module) containing a very low concentration of volatile organic compounds (VOC's) and adsorb these organic materials onto a zeolite adsorbent material. This adsorbent material is mounted in the "rim" of a continuously rotating (2-6 revolutions per hour) "wheel". The VOC laden air passes from the outside of the wheel, through the "rim" of the wheel (where the VOC's are removed onto the adsorbent), and into the interior of the wheel, from which the now cleaned air can either be recirculated into the plant area from which it was drawn (to save on heating bills that would be needed to heat and condition fresh air in the winter), or discharged to the atmosphere.

An area of about 15-20% of the "wheel" (rotor) is out of the adsorption flow path. This 15-20% area of the rotor is sealed from the balance of the rotor and is contacted with hot, clean air -- pre-heated to 350-400 degrees F by recovering heat from the stack of a thermal oxidizer associated with the system. The hot, clean air desorbs the VOC's from the adsorbent in the wheel and the adsorbent media is cooled to below 100 degrees F. The volume of the desorbing clean, hot air stream is typically 1/10 that of the original incoming air stream.

This air stream which now contains all the VOC's at about ten times their original concentration is sent for VOC destruction to either a recuperative thermal oxidizer. Typical removal / recovery efficiencies of the Rotary Concentrators is in the 96-99% range.

The RCS, as manufactured by Catalytic Products International, Inc, will incorporate either our QUADRANT SR Thermal Oxidizer (the model is designated as RCS-50.Q: RCS = Rotor Concentrator System, 50 = 50,000 scfm rated capacity, Q = QUADRANT SR Series Thermal Oxidizer) or our VECTOR Catalytic Oxidizer (this model is designated as RCS-50.V: RCS = Rotor Concentrator System, 50 = 50,000 scfm rated capacity, V = VECTOR Catalytic Oxidizer) The RCS first concentrates the volatile organic compounds (VOC’s) from the process exhaust into an air stream approximately 10% of the original exhaust volume. The VOC’s in the reduced air volume can then be destroyed in a much smaller thermal oxidizer, greatly reducing fuel consumption. The total system destruction efficiency will be at least 97%, or less than 10 ppmv outlet concentration.

Typical Supply includes:

• One hydrophobic zeolite rotor, pre-assembled in an insulated carbon steel housing (aluminum or stainless steel can be substituted for carbon steel)
• Rotor drive assembly with adjustable revolution speed control
• Inlet system fan and plenum for connection to the process
• Inlet filter system (optional, if required)
• Outlet plenum for connections to the QUADRANT Thermal Oxidizer
• QUADRANT SR-Series Thermal Oxidizer
• High thermal efficiency FLOATING TUBE HEAT EXCHANGER (primary)
• Desorption provided by DHR System or Secondary Heat Exchanger (per application)
• TSS – Level II Control System
• Startup and operator training

Products & Services: Systems Group | METAC Group

email info@cpilink.com • website www.cpilink.com