Appeal No. 1998-3054
Application 08/770,888
THE INVENTION
The appellant claims a method for desuperheating steam.
Claim 10 is as follows:
10. A method for desuperheating steam having an initial
amount of superheat located within a cylindrically-shaped
conduit, said conduit having a longitudinal axis and circular
cross-section, said desuperheater providing for injecting
water droplets within a directionally moving stream of
superheated steam, said desuperheater comprising a biscuit
which is aligned along said longitudinal axis, said biscuit
possessing an upstream face and downstream face and a
plurality of openings where within said openings are located
mixing elements which induce a rotational angular velocity to
the superheated steam and water droplets passing therethrough,
said desuperheater being further characterized such that all
of said mixing elements induce the same rotational sign to
said superheated steam and water droplets passing
therethrough, said biscuit supporting a frustrum of a cone
emanating from the upstream face thereof and aligned along
said longitudinal axis, a feed leg radially emanating from the
side wall of said conduit downstream of said frustrum which is
in fluid communication with a bore located within said biscuit
along said longitudinal axis thereof, said method further
comprises passing a stream of water through said feed leg and
bore located within said biscuit along said longitudinal axis
thereof and discharging said stream of water through said bore
in the form of water droplets in a direction counter to said
directionally moving stream of superheated steam and passing
said superheated steam and water droplets through said
plurality of openings and mixing elements located therein
whereupon said combination of water droplets and superheated
steam are caused to assume a rotational angular velocity
resulting in a dropping of the amount of superheat from said
initial superheat amount.
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