Method and a device in a PFBC power plant
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United States of America Patent
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Apr 18, 1995
Grant Date -
N/A
app pub date -
Dec 20, 1993
filing date -
Jun 20, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and device for maintaining a high gas temperature to a gas turbine in a partial-load operation of a PFBC power plant, wherein gas is normally fed out from a fluidized bed through at least one central channel in a combustor which combustor also includes tubes for cooling the bed and for generating steam, tubes normally being completely accommodated in the bed, and during partial-load operation of the plant upper portions of the tubes being exposed above the surface of the bed, wherein during partial-load operation of the plant at least part of the combustion gases is discharged from the combustor via at least one side channel positioned substantially at least at one side of the exposed tube portions, these tube portions thus being completely or partly bypassed by the combustion gases.
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