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Removal of hydrogen sulfide from fluid streams with minimum production of solids

Patent ·
OSTI ID:6281693
; ;
Fluid streams containing hydrogen sulfide from a steam turbine or from a sour gas stream are contacted with an aqueous solution of a polyvalent metal chelate and an oxidizing agent whereby the hydrogen sulfide is converted to free sulfur and then to soluble sulfur compounds. The metal chelate is reduced to a lower oxidation state metal chelate and reduced metal chelate is subsequently oxidized with air back to the higher oxidation state and reused.
Assignee:
The Dow Chemical Company
Patent Number(s):
US 4451442
OSTI ID:
6281693
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
AIR POLLUTION ABATEMENT
AQUEOUS SOLUTIONS
CATALYTIC EFFECTS
CHALCOGENIDES
CHELATES
CHEMICAL REACTIONS
COMPLEXES
DESULFURIZATION
DISPERSIONS
ELEMENTS
EXHAUST GASES
FLUIDS
GASEOUS WASTES
GASES
GEOTHERMAL POWER PLANTS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
MACHINERY
METALS
MIXTURES
OXIDATION
OXIDIZERS
POLLUTION ABATEMENT
POWER PLANTS
SOLIDS
SOLUTIONS
STEAM TURBINES
SULFIDES
SULFUR COMPOUNDS
THERMAL POWER PLANTS
TURBINES
TURBOMACHINERY
WASTES