Overfire air tube damper for boiler and method for regulating overfire air
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United States of America Patent
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Feb 23, 2010
Grant Date -
Nov 20, 2008
app pub date -
May 16, 2007
filing date -
May 16, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A damper and overfire air duct in a combustion system having a combustion structure defining a flue gas passage, the damper and overfire air duct including: an inlet to the overfire air duct and an outlet to the duct discharging overfire air into the flue gas passage, and the damper aligned with an axis of the overfire air duct, and having an open position axially distal to the inlet and a closed position at least partially in the inlet and duct, wherein the damper is movable axially between the open and closed positions.
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