Pollution Control Systems

Pollution Control Systems

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How it all works:

  • The Element (1) hangs vertically from header plate (2) within the filter vessel. The header plate separates the filter’s clean and dirty compartments.
  • Hot Gas is drawn through the filter medium (3) from outside to inside.
  • Particulates and dry scrubbing sorbents are collected on the outer surface (4) of each filter element. These consist of the PM10, PM2.5 size ranges; these agglomerate.
  • The particles are removed from the element by reverse jet cleaning (5). This reversal causes the accumulated solids to be detached from the outer surface of the ceramic filter elements.
  • The particulates and spent dry-scrubbing sorbents are discharged through the hopper outlet (6) for collection and disposal.
  • The filter body can be protected with insulation (7) and trace heated (8) to prevent the formation of the condensation when the equipment is not in use.
  • Incoming gas stream (9) and sorbent (if required).
  • Outgoing cleansed gas stream (10)
  • Injection point for activated carbon and/or sodium bicarbonate (11)
Typical emissions with the use of sodium bicarbonate and activated carbon are as follows:
Particulate< 3mg/Nm3 (typically 1)SO2< 50mg/Nm3
HCl< 10mg/Nm3HF< 1mg/Nm3
NOx< 200mg/Nm3Heavy Metals< 0.5mg/Nm3
Dioxins< 0.1ng/Nm3
Typical particulate emissions of other types of filters:
Bag filter7 to 10mg/Nm3Cyclone> 10mg/Nm3

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