Patents Assigned to GAA Engineered Systems, Inc.
  • Temperature moderated claus process
    Patent number: 7172746
    Abstract: Disclosed is a method for treating a feed gas stream rich in hydrogen sulfide by partially combusting the feed gas stream rich in hydrogen sulfide with an oxygen-enriched gas in a Claus reaction furnace to produce to a combustion reaction product stream containing sulfur. The combustion reaction product stream is split into a recycle stream and a treatment stream and the recycle stream directed back into the Claus reaction furnace, without first condensing sulfur out of the recycle stream, while the treatment stream is directed into a condenser to condense sulfur out of the treatment stream.
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: February 6, 2007
    Assignee: GAA Engineered Systems, Inc.
    Inventor: Russell D. Rischard
  • Method for treating hydrogen sulfide-containing waste gases
    Patent number: 6569398
    Abstract: Disclosed is a method in which hydrogen sulfide-containing liquid sulfur is introduced into a containment vessel to partially fill the containment vessel and create a hydrogen sulfide-containing liquid sulfur phase and a hydrogen sulfide-containing vapor phase. A portion of the hydrogen sulfide-containing liquid sulfur phase is then treated to produce a liquid sulfur-containing phase and a gaseous hydrogen sulfide-containing phase, such that the gaseous hydrogen sulfide-containing phase has a pressure of at least about 60 psig. A portion of the hydrogen sulfide-containing vapor phase is then withdrawn from the containment vessel using at least one eductor driven by a motive fluid, where the motive fluid is the gaseous hydrogen sulfide-containing phase from the container vessel. The hydrogen sulfide-containing waste gas stream exiting the eductor is then treated to reduce the hydrogen-sulfide content of the waste gas.
    Type: Grant
    Filed: April 30, 2001
    Date of Patent: May 27, 2003
    Assignee: GAA Engineered Systems, Inc.
    Inventor: Steve Fenderson
  • Temperature moderation of an oxygen enriched claus sulfur plant using an ejector
    Patent number: 6508998
    Abstract: A process is set forth for improving an oxygen-enriched Claus plant by recycling through an ejector effluent from the first condenser back to the reaction furnace to moderate oxygen induced high temperatures and thus allow additional oxygen-enrichment and attendant throughput in the Claus plant.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: January 21, 2003
    Assignees: Gaa Engineered Systems, Inc., Air Products and Chemicals, Inc.
    Inventor: Elmo Nasato
  • Temperature moderation of an oxygen enriched Claus sulfur plant
    Patent number: 4552747
    Abstract: A process and system are set forth for improving an oxygen-enriched Claus plant by recycling effluent from the first condenser back to the reaction furnace to moderate oxygen induced high temperatures and thus allow additional oxygen-enrichment and attendant throughput in the Claus plant.
    Type: Grant
    Filed: June 20, 1984
    Date of Patent: November 12, 1985
    Assignees: GAA Engineered Systems, Inc., Air Products and Chemicals, Inc.
    Inventor: B. Gene Goar