Recovering sulfur from gas streams containing hydrogen sulfide

Patent · Tue Sep 12 00:00:00 EDT 1978

OSTI ID:6565975

Atwood, G R

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
• Resource Relation: Patent File Date: Filed date 25 Mar 1977
• Country of Publication: United States
• Language: English

Related Subjects

10 SYNTHETIC FUELS
01 COAL, LIGNITE, AND PEAT
GASES
DESULFURIZATION
SULFUR
MATERIALS RECOVERY
SYNTHESIS GAS
PRODUCTION
CHEMICAL REACTIONS
CLAUS PROCESS
COMBUSTION
HYDROGEN SULFIDES
INDUSTRIAL PLANTS
REMOVAL
CHALCOGENIDES
ELEMENTS
FLUIDS
HYDROGEN COMPOUNDS
MANAGEMENT
NONMETALS
OXIDATION
PROCESSING
RECOVERY
SULFIDES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING
090121* - Hydrocarbon Fuels- Chemical Synthesis- (1976-1989)
010402 - Coal
Lignite
& Peat- Purification & Upgrading