Method of and device for maintaining a parameter constant in a fluidized-bed furnace
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United States of America Patent
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-
Apr 2, 1991
Grant Date -
N/A
app pub date -
Sep 29, 1989
filing date -
Oct 1, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A parameter, especially the temperature of the bed in a fluidized-bed furnace, is maintained constant by a regulator (24) positioned in a line (20) that supplies fluidizing air to a trap (15), through which solids that have been precipitated out of the flue gas are recirculated into the fluidized bed (5). The servo mechanism (23) that drives the regulator is coupled to a temperature sensor (27) in the bed such that the volume of fluidizing air is increased when the measured bed temperature exceeds a prescribed level and decreased when it drops below that level.
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