Method and system for removal of sulfur compounds from gases and for regenerating spent sorbents
This patent describes a method for removing hydrogen sulfide and other sulfur compounds after a hot gas. It consists of the steps of: contacting the hot gas with at least one metal oxide sorbent in a packed, non-fluidized bed of metal oxide sorbent which moves countercurrently to the hot gas, whereby the metal oxide sorbent reacts with the hydrogen sulfide and other sulfide compounds to form a sulfur-rich metal sorbent and a hot gas lean in sulfur compounds; removing the hot gas lean in sulfur from the bed of metal oxide sorbent; contacting the sulfur-rich metal sorbent with a first oxygen-containing gas which moves non-fluidized bed of the sulfur-rich metal sorbent in a first phase regeneration to convert sulfur-rich metal sorbent to a partially-sulfided sorbent, thereby forming a sulfur dioxide containing gas; contacting the partially-sulfided metal sorbent with a second oxygen-containing gas which moves co-currently in the direction of a movable, packed, non-fluidized bed of the partially-sulfided metal sorbent in a second phase regeneration to convert the partially-sulfided metal sorbent to regenerated metal oxide and thereby forming additional sulfur dioxide-containing gas; contacting the regenerated metal oxide with air, oxygen-enriched air or oxygen to convert any remaining sulfided metal sorbent to regenerated metal oxide, to cool the regenerated metal oxide or to purge the regenerated metal oxide of sulfur dioxide-containing gas; removing the sulfur dioxide-containing gas purged from the regenerated metal oxide; and reusing the regenerated metal oxide.
- Assignee:
- General Electric Environmental Services, Inc., Lebanon, PA
- Patent Number(s):
- US 4857285
- Application Number:
- PPN: US 7058060A
- OSTI ID:
- 5393205
- Resource Relation:
- Patent File Date: 4 Jun 1987
- Country of Publication:
- United States
- Language:
- English
Similar Records
Long Life ZnO-TiO2 and Novel Sorbents
Bench-scale demonstration of hot-gas desulfurization technology. Quarterly technical progress report, July 1, 1994--September 30, 1994
Related Subjects
NATURAL GAS
DESULFURIZATION
ABSORPTION
ADSORBENTS
HYDROGEN SULFIDES
OXIDES
SULFUR COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROGEN COMPOUNDS
OXYGEN COMPOUNDS
SULFIDES
030300* - Natural Gas- Drilling
Production
& Processing