Appeal 2007-0121
Application 10/324,594
39. A desulfurized fluid made by the process comprising the
steips of:
(a) contacting a sulfur-containing fluid with a reduced sorbent in a
desulfurization zone under desulfurization conditions sufficient
to provide a desulfurized fluid and a sulfur-loaded sorbent,
wherein said sorbent comprises perlite, zinc oxide, and a
reduced-valence promoter metal component and wherein said
perlite has a mean particle size in the range of from about 2 to
about 30 microns and wherein less than about 10 weight
percent of solid perlite has a particle size greater than 75
microns;
(b) contacting at least a portion of said sulfur-loaded sorbent with
an oxygen-containing regeneration stream in a regeneration
zone under regeneration conditions sufficient to provide a
regenerated sorbent comprising an oxidized promoter metal
component;
(c) contacting a least a portion of said regenerated sorbent with a
hydrogen-containing reducing stream in a reducing zone under
reducing conditions sufficient to reduce at least a portion of
said oxidized promoter metal component to said reduced-
valence promoter metal component, thereby providing said
reduced sorbent; and
(d) recovering a desulfurized fluid.
The Examiner relies on the following prior art references as evidence
in rejecting the appealed claims:
Nelson US 4,721,582 Jan. 26, 1988
Khare US 6,271,173 B1 Aug. 7, 2001
Claims 1-11 stand rejected under 35 U.S.C. § 103(a) as being
unpatentable over Nelson. Claims 11-26, 38 and 39 stand rejected under
35 U.S.C. § 103(a) as being unpatentable over Nelson in view of Khare.
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