DEC IMPIANTI S.p.A.

DEC.FBC™ • fluidized bed concentrators

DEC.FBC™ • fluidized bed concentrators

DEC.FBC™ (fluidized bed concentrator) is an industrial process for the treatment of exhaust air. The system uses a bed of adsorbent beads to adsorb volatile organic compounds (VOCs) from the exhaust gas. Differently from the static-bed (DEC.SBC™) or rotor concentrators (DEC.RBC™), the FBC system forces the VOC-laden air (SLA) through several perforated steel trays, increasing the velocity of the air and allowing the sub-millimeter adsorbent beads to fluidize, or behave as if suspended in a liquid. This increases the surface area of the adsorbent-gas interaction, making it more effective at capturing VOCs.

The fluidized bed concentrator consists of five primary components:

  • Adsorption tower: This is the main component of the FBC system. It is where the VOCs are adsorbed onto the adsorbent beads. The adsorbent beads circulate in the adsorption tower by fluidization.
  • Desorption tower: This is where the adsorbent beads are regenerated. The VOCs are desorbed from the beads and then sent to a VOC treatment system.
  • VOC treatment system module: this is where the VOCs are recovered or oxidized. In case of an XTO™ • thermal oxidation, the heat from the combustion is typically used to regenerate the adsorbent beads in the desorption tower.
  • Adsorbent transport system: This system is used to transport the adsorbent beads between the adsorption and desorption towers.
  • Process fans: These fans are used to move the exhaust air through the FBC system.
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