The compact, simple D'GAASS process removes H2S and H2Sx from the liquid sulfur product produced from Claus sulfur recovery units, while greatly reducing odors and hazards associated with liquid sulfur. The D'GAASS units may be supplied as shop fabricated modular units, providing an opportunity for additional cost savings as compared to standard field installation.
The D’GAASS process removes residual H2S and H2Sx from liquid sulfur produced in a Claus plant. The residual H2S content is typically over 300 ppmw rendering it dangerous for storage, loading, and transport. This process, which provides better sulfur quality without the use of catalysts or chemicals, was developed, patented, and commercialized in 1996 and has since been licensed in over 80 units worldwide with total capacity of over 40,000 LTPD sulfur.