DEC.FBC™ • fluidized bed concentrators

DEC.FBC™ is an industrial process for treating exhaust air that uses a bed of adsorbent beads to adsorb volatile organic compounds (VOCs) from the exhaust gas. It forces VOC-laden air through several perforated steel trays, increasing air velocity so the sub-millimeter adsorbent beads fluidize, or behave as if suspended in a liquid, which increases the surface area of the adsorbent-gas interaction and makes VOC capture more effective.

Unlike the static-bed (DEC.SBC™) or rotor concentrators (DEC.RBC™), the FBC system fluidizes the adsorbent beads by forcing air through perforated trays rather than holding the adsorbent in a fixed bed or a rotating wheel, giving it a larger effective adsorbent-gas contact surface for large air volumes with low solvent concentration.

A DEC.FBC™ system consists of five primary components: an adsorption tower where VOCs are adsorbed onto the fluidized beads, a desorption tower where the beads are regenerated and VOCs are desorbed, a VOC treatment system module where the desorbed VOCs are recovered or oxidized, an adsorbent transport system that moves the beads between the two towers, and process fans that move the exhaust air through the system.

Not usually. DEC.FBC™ is designed for large volumes of air with a small concentration of solvents, typically 0.1÷0.5 g/Nm³, which is a different duty than LEL recirculation systems (DEC.LEL™) are typically applied to.

Contact DEC's Technical Sales & Applications engineering team through the DEC.group contact page to discuss your exhaust air volume, solvent concentration, and VOC & HAP emission control requirements so they can size and quote a DEC.FBC™ system for your process.