Appeal No. 1997-2674
Application No. 08/266,809
Burton teaches a process for reducing the concentration
of nitrogen oxides, or other pollutants, in an effluent from
the combustion of a carbonaceous fuel (column 3, lines 44-47).
According to Burton, the apparatus 20 used to carry out the
process comprises a probe 21 comprising: (i) a supply conduit
24 for supplying and injecting a treatment fluid 28, such as a
solution, into a high temperature environment, such as the
effluent stream of a utility boiler 10; and (ii) an
atomization conduit 30 for supplying an atomization fluid 32
(figures 1-3; column 3, lines 61-66; column 6, lines 19-21).
Burton further states that the supply conduit 24 is coaxial
with and disposed within atomization conduit 30 and that it is
axially slidable within atomization conduit 30 so that end
portion 24a of supply conduit 24 can extend beyond the end 31
of atomization conduit 30, as illustrated in figures 2 and 3,
or portion 24a can be retracted into atomization conduit 30,
as illustrated by the phantom lines in figure 3 (column 6,
lines 39-46; column 6, lines 54-58). Regarding the purpose of
the axial slidability of supply conduit 24, Burton teaches
that this feature facilitates the independent control of both
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