Metal sulfide initiators for metal oxide sorbent regeneration
A process of regenerating a sulfided sorbent is provided. According to the process of the invention, a substantial portion of the energy necessary to initiate the regeneration reaction is provided by the combustion of a particulate metal sulfide additive. In using the particulate metal sulfide additive, the oxygen-containing gas used to regenerate the sulfided sorbent can be fed to the regeneration zone without heating or at a lower temperature than used in conventional processes wherein the regeneration reaction is initiated only by heating the oxygen-containing gas. The particulate metal sulfide additive is preferably an inexpensive mineral ore such as iron pyrite which does not adversely affect the regeneration or corresponding desulfurization reactions. The invention further includes a sorbent composition comprising the particulate metal sulfide additive in admixture with an active metal oxide sorbent capable of removing one or more sulfur compounds from a sulfur-containing gas stream. 1 fig.
- Sponsoring Organization:
- DOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC21-88MC25006
- Assignee:
- Research Triangle Inst., Research Triangle Park, NC (United States)
- Patent Number(s):
- US 5914288; A
- Application Number:
- PPN: US 8-939577
- OSTI ID:
- 6317870
- Country of Publication:
- United States
- Language:
- English
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Metal sulfide initiators for metal oxide sorbent regeneration
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Related Subjects
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ADDITIVES
ADSORBENTS
AIR POLLUTION CONTROL
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
CONTROL
ENERGY
HEAT
MINERALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
PROCESS HEAT
PYRITE
REGENERATION
SULFIDE MINERALS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMOCHEMICAL PROCESSES