Appeal No. 97-2914
Application No. 08/448,060
A duct for providing flue gas containing SO3 and SO2 produced by burning fossil fuel (pp. 302
and 303).3 The SO3 can be highly corrosive, especially when the SO3 reacts with water
to form sulfuric acid (para. bridging pp. 302 and 303).
A particulate collection means for removing particles from the flue gas to produce a partially
cleaned flue gas (p. 309, Fig. 7-2, Ash Collector).
A flue means for conveying the partially cleaned flue gas from the particulate collection means
(Fig. 7-2).
Means for injecting an aqueous solution of Ca, Mg, or Na based reagents (p. 308, Table 7-7)
wherein make-up limestone is fed to the wet scrubber means through the limestone
slurry tank (p. 309, Fig. 7-2).
5. A wet scrubber means for removing SO2 from the substantially SO3-free flue gas, which
B
makes a wet reagent with materials such as lime (CaO), limestone (CaCO3), and
magnesium oxide (MgO) (p. 308, Table 7-7; compare, present claim 11, and
p. 7, lines 20-24, of the present specification),
reacting the wet reagent with the SO2 in the wet scrubber means to remove SO2 from
the flue gas (p. 306, Figure 7-1; and pp. 307-320).
There are differences between the teachings of Kohl and the claimed invention.
3 The Aflue@ in flue gas is a duct.
4
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 Next
Last modified: November 3, 2007