Amine Scrubber

  • Raw biogas enters and is pressurized up to 100 psig
  • Sulfides (H2S) are removed
  • Biogas then flows upward through a packed column where the carbon dioxide (CO2) and sulfides are absorbed within the counter flowing amine
    • Once the saturated amine leaves the scrubber and the carbon dioxide is driven off to the atmosphere, the amine may be further treated by heating it
  • High quality biogas (renewable natural gas) exits