Duct burner of HRSG with liner film cooling
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United States of America Patent
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Mar 6, 2018
Issued Date -
N/A
app pub date -
Oct 8, 2013
filing date -
Oct 8, 2012
priority date (Note) -
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Abstract
A duct burner assembly for a HRSG having a casing that defines a combustion chamber with a liner for communicating an exhaust gas. A firing runner attaches to the liner and extends through the combustion chamber. The firing runner defines a plurality of orifices for emitting combustible gas and sustaining a flame. A flame stabilizer attaches to the firing runner and is configured to at least partially shield the plurality of orifices from the exhaust gas. A guide plate attaches to the firing runner and is configured to define a slot between the liner and the guide plate. The guide plate has an upstream end and a downstream end wherein the downstream end is closer to the lining than the upstream end to control turbulent flow of the exhaust gas through the slot and cool the liner. To reduce generation of flow turbulence the tubes within the slot are covered with streamline plates. It allows to decrease a mixing between hot and cold gas flows and improve the liner cooling.
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