Metal sulfide initiators for metal oxide sorbent regeneration

Patent · Thu Dec 31 23:00:00 EST 1998

OSTI ID:872342

Turk, Brian S ^[1]; Gupta, Raghubir P ^[1]

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1. Durham, NC

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. 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.

• Research Organization: RESEARCH TRIANGLE INSTITUTE
• DOE Contract Number: AC21-88MC25006
• Assignee: Research Triangle Institute (Research Triangle Park, NC)
• Patent Number(s): US 5914288
• OSTI ID: 872342
• Country of Publication: United States
• Language: English

Related Subjects

/502/
according
active
active metal
additive
admixture
adversely
adversely affect
affect
capable
combustion
composition
composition comprising
compounds
comprising
containing gas
conventional
conventional process
conventional processes
corresponding
desulfurization
energy
fed
gas
gas stream
generation reaction
heating
inexpensive
initiate
initiated
initiators
iron
metal
metal oxide
metal sulfide
mineral
oxide
oxide sorbent
oxygen-containing
oxygen-containing gas
particulate
portion
preferably
process
processes
provided
pyrite
reaction
reactions
regenerate
regenerating
regeneration
regeneration reaction
regeneration zone
removing
sorbent
sorbent capable
sorbent regeneration
stream
substantial
substantial portion
sulfide
sulfide additive
sulfided
sulfided sorbent
sulfur
sulfur compound
sulfur compounds
sulfur-containing
sulfur-containing gas
temperature
zone