GAA Licensed Technologies, though time tested and proven to provide reliable operation, remain state of the art advancements in the Sulfur Recovery Process 

COPE^SM Claus Oxygen Enrichment Technology

A process for increasing Sulfur Recovery Unit (SRU) capacity through the use of oxygen for partial or complete replacement of combustion air. (COPE = Claus Oxygen-based Process Expansion) Developed and patented jointly by Goar, Allison & Associates, Inc. and Air Products and Chemicals, Inc.

D'GAASS^SM Liquid Sulfur Degassing Technology

A process for removing residual H2S from sulfur product, which typically contains 250-300 ppmw, to 10 ppmw H2S. Developed and patented by GAA

SUPERCLAUS^® Process

GAA has sub-licensed this process, at several North American locations,  for improving the overall sulfur recovery in a modified Claus SRU through the use of a selective oxidation catalyst. The SUPERCLAUS Process is licensed by Jacobs  Nederland B.V.

Comprimo Ammonia Destruction Process

GAA has sub-licensed this Jacobs  Nederland B.V. process in several U.S. Refineries for the destruction of ammonia contained in sour water stripper off-gas in an SRU.

Selectox Processes

GAA has sub-licensed these UOP processes which are all based on a selective oxidation catalyst. The Recycle Selectox process is an all-catalytic  (no reaction furnace) process for recovering sulfur from lean acid gas streams. GAA is not currently offering the Selectox processes.