Patents Assigned to Acrion Technologies, Inc.
  • Patent number: 5842357
    Abstract: A process for concentrating and recovering methane and carbon dioxide from landfill gas includes absorption of commonly occurring pollutants using a reduced amount of carbon dioxide absorbent which itself may be an in situ derived and recoverable constituent. Separated methane may be concentrated into a high heating value fuel, and a highly pure food-grade carbon dioxide product may also be recovered. Process streams may be used to provide fuel for compression and refrigeration and/or to regenerate carbon dioxide absorbent.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: December 1, 1998
    Assignee: Acrion Technologies, Inc.
    Inventors: Lawrence A. Siwajek, W. Jeffrey Cook, William R. Brown
  • Patent number: 5681360
    Abstract: A process for concentrating and recovering methane and carbon dioxide from landfill gas includes absorption of commonly occurring pollutants using a reduced amount of carbon dioxide absorbent which itself may be an in situ derived and recoverable constituent. Separated methane may be concentrated into a high heating value fuel, and a highly pure food-grade carbon dioxide product may also be recovered. Process streams may be used to provide fuel for compression and refrigeration and/or to regenerate carbon dioxide absorbent.
    Type: Grant
    Filed: January 11, 1995
    Date of Patent: October 28, 1997
    Assignee: Acrion Technologies, Inc.
    Inventors: Lawrence A. Siwajek, W. Jeffrey Cook, William R. Brown