Steam generator arrangement
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United States of America Patent
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Oct 25, 2011
Issued Date -
N/A
app pub date -
Apr 11, 2008
filing date -
Apr 12, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method and apparatus effectively bypasses flue gas through or around selected boiler convection heat transfer tube banks within a new or existing boiler flue. Heat transfer tubes are removed, or omitted in the design of a new boiler flue, forming one or more voids at one or more locations within the tube banks. A bypass flue or conduit is formed within each void, for example using steel plates, along with existing flue walls, or using an integral sleeve. A wall of the bypass flue may include water or steam-cooled tubes. Dampers may be installed at either end of or within the bypass flue to control the amount of flue gas directed through each bypass flue.
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International Classification(s)
Cited Art Landscape
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