Control of hydrogen sulfide emission from geothermal power plants

Technical Report · Thu Jul 01 00:00:00 EDT 1976

DOI:https://doi.org/10.2172/7125601· OSTI ID:7125601

Harvey, W W; Brown, F C; Turchan, M J

A process for controlling H/sub 2/S emissions at geothermal power plants was evaluated in laboratory scale equipment and by process engineering analysis. The process is based on scrubbing geothermal steam with a metal salt solution to selectively remove and precipitate the contained H/sub 2/S. The metal sulfide is roasted or oxygen/acid leached to regenerate the metal salt, and sulfur is rejected from the system as elemental sulfur or as sulfate. Up to 95 percent removal of H/sub 2/S from simulated geothermal steams was obtained in a 2'' diameter scrubbing column packed with 3 feet of 5/8'' Flexirings by use of a recirculating slurry of copper sulfate/copper sulfide. Information is included on the chemistry, thermodynamics, kinetics and process control aspects of the process, scrubber system design, operation, and corrosion, and design proposals and cost estimates for a H/sub 2/S removal system. (LCL)

• Research Organization: Eic, Inc., Newton, MA (USA)
• DOE Contract Number: E(11-1)-2730
• OSTI ID: 7125601
• Report Number(s): COO-2730-2
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
GEOTHERMAL POWER PLANTS
GASEOUS WASTES
POLLUTION CONTROL EQUIPMENT
SCRUBBERS
HYDROGEN SULFIDES
REMOVAL
NATURAL STEAM
SCRUBBING
CORROSION
DESIGN
PERFORMANCE
AIR POLLUTION
COPPER SULFATES
COPPER SULFIDES
LEACHING
PERFORMANCE TESTING
RECOVERY
STAINLESS STEELS
SULFUR
ALLOYS
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMIUM ALLOYS
COPPER COMPOUNDS
CORROSION RESISTANT ALLOYS
DISSOLUTION
ELEMENTS
EQUIPMENT
FLUIDS
GEOTHERMAL FLUIDS
HYDROGEN COMPOUNDS
IRON ALLOYS
IRON BASE ALLOYS
NONMETALS
OXYGEN COMPOUNDS
POLLUTION
POWER PLANTS
SEPARATION PROCESSES
STEAM
STEELS
SULFATES
SULFIDES
SULFUR COMPOUNDS
TESTING
THERMAL POWER PLANTS
TRANSITION ELEMENT COMPOUNDS
WASTES
Geothermal Legacy