Process to abate geothermal hydrogen sulfide
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
- Resource Relation:
- Patent File Date: Filed date 29 Aug 1983; Other Information: PAT-APPL-527136
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
NATURAL STEAM
DESULFURIZATION
SEPARATION EQUIPMENT
SEPARATION PROCESSES
AERATION
AIR POLLUTION ABATEMENT
HYDROGEN SULFIDES
IRON OXIDES
MEDIUM TEMPERATURE
MIXING
PRESSURE CONTROL
REMOVAL
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
FLUIDS
GEOTHERMAL FLUIDS
HYDROGEN COMPOUNDS
IRON COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
STEAM
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
150600* - Geothermal Energy- Environmental Aspects
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)