Recovering sulfur from gas streams containing hydrogen sulfide
A process for the recovery of sulfur from gas streams containing hydrogen sulfide is disclosed which comprises the steps of reacting a portion of the hydrogen sulfide with sulfur dioxide in a Claus reaction to form sulfur, removing the sulfur, incinerating the residual hydrogen sulfide in the resulting gas stream to sulfur dioxide, absorbing the sulfur dioxide in the incinerate gas stream in an aqueous absorbent solution, stripping the sulfur dioxide from the aqueous absorbent solution, recycling the stripped sulfur dioxide for reaction with succeeding portions of hydrogen sulfide in the incoming gas stream, re-contacting the stripped aqueous absorbent solution with succeeding portions of the incinerated gas stream to absorb additional sulfur dioxide, regenerating a portion of the aqueous absorbent solution to remove heat stable sulfur oxyanions therefrom by contacting said solution with an anion exchange resin and re-contacting the regenerated aqueous absorbent solution with said incinerated gas stream to absorb additional sulfur dioxide.
- Assignee:
- Union Carbide Corp.
- Patent Number(s):
- US 4113849
- OSTI ID:
- 6565975
- Country of Publication:
- United States
- Language:
- English
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090121* -- Hydrocarbon Fuels-- Chemical Synthesis-- (1976-1989)
10 SYNTHETIC FUELS
CHALCOGENIDES
CHEMICAL REACTIONS
CLAUS PROCESS
COMBUSTION
DESULFURIZATION
ELEMENTS
FLUIDS
GASES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INDUSTRIAL PLANTS
MANAGEMENT
MATERIALS RECOVERY
NONMETALS
OXIDATION
PROCESSING
PRODUCTION
RECOVERY
REMOVAL
SULFIDES
SULFUR
SULFUR COMPOUNDS
SYNTHESIS GAS
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING