Liquid heaters and vaporizers – Sectional
Reexamination Certificate
2008-04-11
2011-10-25
Wilson, Gregory A (Department: 3749)
Liquid heaters and vaporizers
Sectional
C122S479500, C122S213000
Reexamination Certificate
active
08042497
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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Larson Kevin A.
Laursen Thomas A.
Shanmugavel Shan A.
Thompson Christopher J.
Warren Eric M.
Babcock & Wilcox Power Generation Group, Inc.
Marich Eric
Wilson Gregory A
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