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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.