Catalytic removal of hydrogen sulfide from geothermal fluids

Conference · Thu Oct 01 04:00:00 EDT 1981 · Trans. - Geotherm. Resour. Counc.; (United States)

OSTI ID:6979919

Urban, P ^[1]; Massie, S N

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1. UOP, Inc., Des Plaines, IL

UOP Sulfox technology successfully removed 500 ppm hydrogen sulfide from simulated mixed phase geothermal waters. The Sulfox process involves air oxidation of hydrogen sulfide using a fixed catalyst bed. The catalyst activity remained stable through the life of the program. The distribution of hydrogen sulfide conversion products was affected by the pH; low pH favored elemental sulfur, whereas high pH favored water soluble sulfate and thiosulfate. Operation with some liquid water present assured full catalytic activity. Dissolved salts reduced catalyst activity somewhat. Application of Sulfox technology to synthetic geothermal fluids resulted in a straightforward process with no requirements for auxiliary processes such as a chemical plant. Application of the process to various types of vapor-dominated and high and low salinity liquid-dominated geothermal systems is discussed.

• DOE Contract Number: AC03-79ET27203
• OSTI ID: 6979919
• Report Number(s): CONF-811015-
• Conference Information: Journal Name: Trans. - Geotherm. Resour. Counc.; (United States) Journal Volume: 5
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150600* -- Geothermal Energy-- Environmental Aspects
AMMONIA
CATALYSIS
CHALCOGENIDES
CHEMICAL REACTIONS
DESULFURIZATION
FLUIDS
GEOTHERMAL FLUIDS
HYDRIDES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
OXIDATION
PH VALUE
REMOVAL
SALTS
SIMULATION
SULFIDES
SULFOX PROCESS
SULFUR COMPOUNDS