Combustion – Process of combustion or burner operation – Flame shaping – or distributing components in combustion zone
Reexamination Certificate
2005-10-04
2005-10-04
Price, Carl D. (Department: 3749)
Combustion
Process of combustion or burner operation
Flame shaping, or distributing components in combustion zone
C431S008000, C431S010000, C431S181000, C431S187000, C431S183000, C431S284000, C110S262000
Reexamination Certificate
active
06951454
ABSTRACT:
A dual fuel burner including an elongated supply pipe and a gas injector for a boiler furnace having a plurality of peripheral openings around a center opening. The peripheral openings are pitched radially away from the longitudinal axis of the gas injector and also pitched either clockwise or counter-clockwise, to impart a swirling motion to gaseous fuel exiting the injector through the openings. A first sleeve member is concentrically spaced about the supply pipe and the gas injector to form an inner annular passageway for conveying a mixture of primary air and pulverized coal to the furnace combustion zone. A second sleeve member is concentrically spaced about the first sleeve member to form an outer annular passageway for conveying secondary air to the furnace combustion zone, and a plurality of circumferentially spaced vanes mounted within the outer annular passageway for inducing a swirling motion to the secondary air discharging from the outer annular passageway into the furnace combustion zone.
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Lenzer Ronald C.
Sarv Hamid
Grant Kathryn W.
Marich Eric
Price Carl D.
Seymour Michael J.
The Babcock & Wilcox Company
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