Candle Filters for the 21st Century

The inside facts on our new candle filters:

  • 60% increase in capacity

  • 60% less pressure drop

  • Upgrade existing system

  • Lower capital cost

The mechanism of fibre filters is well known and is basically a combination of impingement for particles greater than 1-2 microns in diameter and diffusion for the finer, particles when brownian motion becomes increasingly predominant. As the gas passes through the filter bed the small mist particles are bombarded by the gas molecules surrounding them, causing them to move in various direction, towards and away from the surface of the fibres making up the filters

Each filter is composed of millions of fibres and although the efficiency of each individual fibre is low the cumulative effect is very high. Low approach velocities are necessary in order to mask the diffusion velocities associated with brownian movement.

The candle are installed vertically and gases pass horizontally through the filter wall, the trapped particles coalescing and draining down through the filter bed.

With the innovative 2 Pack design CPL provides inexpensive solution to mist emission control problems. particle impingment & collection

Gas flow through candles can be either inside/outside or outside/inside depending upon the sitting of the installation and the method of securing the candles in place.

Style Removal Efficiency Pressure Loss  (m/m W.G.) Typical Service
HL 1 0/TGW/PP High efficiency 100% above 1 Micron 98% above 0.5 Micron 150-450 Acid plants high pressure systems plasticiser mists
HL 8/TGW High efficiency 100% above 3 microns 95% above 1 microns 80% above 0.5 micron 100-250 Acid plants soluble fume
HL/P 12 High efficiency 100% above 3 microns 95% above 1 micron 90% above 0.5 micron 100-250 Corrosive service soluble fume
HL 12 High efficiency 100% above 3 microns 95% above 3 microns 100-300 Wet chlorine systems


Typical Candle Filters Application

  • Compressed air and refrigerant gases
  • Oil mist removal
  • Fertiliser prill towers
  • Ammounium chloride mist
  • Chromic Acid mist
  • Sulphuric Acid mist
  • Phosphoric Acid mist
  • Hydrochloric Acid mist
  • Wet chlorine gas
  • Dry chlorine gas
  • Plasticiser mist