Process to abate geothermal hydrogen sulfide
Patent
·
OSTI ID:6480138
A process for removing hydrogen sulfide from geothermal steam and from vent streams, or concentrated portions produced by a hydrogen sulfide separation process, includes the steps of introducing an oxygen-containing gas, such as air into the steam, or vent stream, and thereafter contacting the steam and oxygen-containing gas in a contacting stage with iron oxide supported by a carrier resistant to deterioration. The steam having a temperature of at least 250/sup 0/ F. is mixed with oxygen to provide a molar ratio of oxygen-to-hydrogen sulfide ratio of less than about 10. During the contacting stage the pressure of the steam and oxygen-containing gas is maintained at a pressure sufficient to enable removal of a majority of the hydrogen sulfide from the steam and oxygen-containing gas.
- Assignee:
- Occidental Research Corp.
- Patent Number(s):
- US 4528169
- OSTI ID:
- 6480138
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
15 GEOTHERMAL ENERGY
150600* -- Geothermal Energy-- Environmental Aspects
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AERATION
AIR POLLUTION ABATEMENT
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DESULFURIZATION
FLUIDS
GEOTHERMAL FLUIDS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IRON COMPOUNDS
IRON OXIDES
MEDIUM TEMPERATURE
MIXING
NATURAL STEAM
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
PRESSURE CONTROL
REMOVAL
SEPARATION EQUIPMENT
SEPARATION PROCESSES
STEAM
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
150600* -- Geothermal Energy-- Environmental Aspects
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AERATION
AIR POLLUTION ABATEMENT
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DESULFURIZATION
FLUIDS
GEOTHERMAL FLUIDS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IRON COMPOUNDS
IRON OXIDES
MEDIUM TEMPERATURE
MIXING
NATURAL STEAM
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
PRESSURE CONTROL
REMOVAL
SEPARATION EQUIPMENT
SEPARATION PROCESSES
STEAM
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS