Metal sulfide initiators for metal oxide sorbent regeneration

Patent · Sun Dec 31 23:00:00 EST 2000

OSTI ID:874074

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 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.

• Research Organization: RESEARCH TRIANGLE INSTITUTE
• DOE Contract Number: AC21-88MC25006
• Assignee: Research Triangle Institute (Research Triangle Park, NC)
• Patent Number(s): US 6306793
• OSTI ID: 874074
• Country of Publication: United States
• Language: English

Related Subjects

/502/423/
active
additive
admixture
adversely
adversely affect
affect
capable
combustion
composition
compounds
comprising
conventional
desulfurization
energy
fed
gas
gas stream
heating
inexpensive
initiate
initiated
initiators
iron
metal
metal oxide
mineral
oxide
oxide sorbent
oxygen-containing
particulate
portion
process
processes
provided
pyrite
reaction
reactions
regenerate
regenerating
regeneration
regeneration reaction
removing
sorbent
sorbent regeneration
stream
substantial
sulfide
sulfided
sulfur
sulfur-containing
temperature
zone