Appeal No. 1997-1551
Application No. 08/235,597
Claim 1, the only independent claim, is illustrative of the subject matter on appeal and reads as
follows:
A method for removing SO3 and SO2 from a flue gas produced by the burning of a fossil fuel,
comprising:
providing flue gas to particulate collection means for collecting particles from the flue gas
to produce partially cleaned flue gas;
injecting into the partially cleaned flue gas, after particles have been removed therefrom
by the particulate collection means, an amount of dry sorbent having a particle size
range larger than approximately 1.0 B 2.0 microns sufficient to react with and remove
substantially all of the SO3 from the partially cleaned flue gas to produce a substantially
SO3-free flue gas containing reacted dry sorbent and unreacted dry sorbent;
conveying the substantially SO3-free flue gas, reacted dry sorbent, and unreacted dry
sorbent to wet scrubber means to wet and remove both the reacted and unreacted dry
sorbent in the substantially SO3-free flue gas, thereby making the unreacted dry sorbent
available as a reagent for SO2 removal; and
approved the after-final amendment for entry upon the filing of an appeal, per the May 6, 1996 Advisory
Action.
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