Method and apparatus for drying the fuel of a fluidizied-bed boiler
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United States of America Patent
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May 30, 1995
Grant Date -
N/A
app pub date -
May 26, 1994
filing date -
Nov 27, 1991
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present publication discloses a method and an apparatus for drying the fuel used for firing a fluidized-bed boiler (1). The hot, inert solids of the fluidized bed are circulated by a regulated rate from the furnace (2) to a simple dryer (11) incorporated into the fuel feed line (7) to the boiler (1), whereby the fuel is dried and steam is generated. By virtue of controlled bed solids recirculation, a constant temperature of the dryer (11) can be maintained, thus permitting the omission of all heat transfer surfaces from the dryer (11). The nearly clean steam released from the drying process is routed from the dryer (11) to useful applications. (FIG. 1)
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