Method for controlling removal of hydrogen sulfide from gases
Patent
·
OSTI ID:6649048
Hydrogen sulfide is removed from a gas stream in an oxidation-reduction system by contacting the gas stream with an aqueous chelated iron solution in which the iron is in the ferric state to absorb hydrogen sulfide and convert it to elemental sulfur. The solution is regenerated by aeration. A redox electrode is used to monitor the oxidation potential of the solution, and corrective action is taken, as required, to maintain the concentration of ferric iron in the solution so as to achieve efficient removal of hydrogen sulfide.
- Assignee:
- Air Resources, Inc.
- Patent Number(s):
- US 4011304
- OSTI ID:
- 6649048
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
424000* -- Engineering-- Pollution Control Equipment-- (1980-1989)
AIR POLLUTION
AIR POLLUTION CONTROL
CHALCOGENIDES
CHELATES
CHEMICAL REACTIONS
COMPLEXES
ELEMENTS
FLUIDS
GASES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IRON
METALS
NONMETALS
POLLUTION
POLLUTION CONTROL
PURIFICATION
REDOX REACTIONS
SEPARATION PROCESSES
SULFIDES
SULFUR
SULFUR COMPOUNDS
TRANSITION ELEMENTS
424000* -- Engineering-- Pollution Control Equipment-- (1980-1989)
AIR POLLUTION
AIR POLLUTION CONTROL
CHALCOGENIDES
CHELATES
CHEMICAL REACTIONS
COMPLEXES
ELEMENTS
FLUIDS
GASES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IRON
METALS
NONMETALS
POLLUTION
POLLUTION CONTROL
PURIFICATION
REDOX REACTIONS
SEPARATION PROCESSES
SULFIDES
SULFUR
SULFUR COMPOUNDS
TRANSITION ELEMENTS