Patents Assigned to Shaw Liquid Solutions LLC.
  • Treatment of spent caustic refinery effluents
    Patent number: 7214290
    Abstract: In the methods for treatment of caustic effluents described in the specification, a spent caustic refinery effluent is supplied to a submerged combustion gas evaporator in which hot combustion gas containing carbon dioxide is injected into the caustic liquid to concentrate the liquid and convert a hydroxide constituent to a carbonate. Where the caustic effluent is from a petroleum refinery, oil in the waste liquid is separated from the aqueous constituent before, during or after concentration.
    Type: Grant
    Filed: September 4, 2002
    Date of Patent: May 8, 2007
    Assignees: Shaw Liquid Solutions LLC., GEI Liquid Solutions LLC.
    Inventors: Bernard F. Duesel, Jr., John P. Gibbons, Michael J. Rutsch