Adsorption on activated carbon

The Mixture of Air & Hydrocarbons goes through the Carbon Vessels. The HC’s are adsorbed on the AC, the Clean Air goes to Atmosphere.

Success depends on:

  • Activated Carbon Properties
  • Design of the Adsorber (internal distribution)

SYMEX Actvated Carbon Properties

  • Wide internal surface 1300 to 1800 m2/gram
  • A well “balanced” pore structure
  • Base material used: mineral, peat and wood
  • Very low sensitivity for hot spots through heat balanced adsorption.
  • Very good bleed through values for low emissions ( 0,01 et 5 g/m3).
  • Very low-pressure drop over the carbon beds
  • Good mechanical resistance
  • Long life time of more than 15 years.

HC Molecules

 
  1. Vapour outlet
  2. Vapour inlet
  3. Vapour inlet
  4. Mass transfer zone: removes most part of HC from the vapours
  5. Transition zone: is a buffer for variation in concentration and flow of the vapours
  6. Emission zone: stays clean to keep the emission at the elected level

Adsorber design

Top Down Flow: The HC Vapours enter the Vessel from Top and Clean Air goes to Atmosphere through the Bottom:

  • No movement (dusting) of the carbon during vacuum break. The Carbon life time is therefore longer.

  • No elements are on the top part of the unit so no platform is required.