Patents Assigned to Denim Engineering, Inc.
  • Apparatus and process for improved aromatic extraction from gasoline
    Patent number: 6800253
    Abstract: The improved process and apparatus of the present invention for extracting high purity aromatics from gasoline using a glycol solvent based extraction process decrease liquid-vapor flashing, reduce reflux flow rate, and use heat of enthalpy produces at one point as a source of energy used at another point, decreasing energy consumption while significantly increasing purity and amount of product obtained.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: October 5, 2004
    Assignee: Denim Engineering, Inc.
    Inventors: George Winter, Zvi Merchav
  • Apparatus and process for improved aromatic extraction from gasoline
    Patent number: 6303021
    Abstract: The improved process and apparatus of the present invention for extracting high purity aromatics from gasoline using a glycol solvent based extraction process decrease liquid-vapor flashing, reduce reflux flow rate, and use heat of enthalpy produces at one point as a source of energy used at another point, decreasing energy consumption while significantly increasing purity and amount of product obtained.
    Type: Grant
    Filed: December 12, 2000
    Date of Patent: October 16, 2001
    Assignee: Denim Engineering, Inc.
    Inventors: George Winter, Zvi Merchav
  • Method for rejuvenating solid paraxylene adsorbent
    Patent number: 6284695
    Abstract: The method for rejuvenating solid paraxylene adsorbent comprises the steps of varying the water injection rate above a predetermined minimum level in a non-linear fashion for a time sufficient to produce rejuvenation of the adsorbent and if desired, adding at least one polar organic compound to the water being injected.
    Type: Grant
    Filed: October 12, 1999
    Date of Patent: September 4, 2001
    Assignee: Denim Engineering, Inc.
    Inventor: George Winter