Combustion – Fuel disperser installed in furnace – Plural feed means extending to common wall opening of furnace
Patent
1988-07-19
1990-05-22
Green, Randall L.
Combustion
Fuel disperser installed in furnace
Plural feed means extending to common wall opening of furnace
2394025, 239405, F23M 900
Patent
active
049273523
ABSTRACT:
A dual register for controlling the flow of combustion air to a burner including an outer register formed by a mounting frame having spaced apart support plates interconnected by circumferentially spaced fixed housing members. The frame defines a plurality of inlet openings for admitting a first stream of air substantially radially from a wind box. Each inlet opening includes at least one, non-planar, oblique parallelogram shaped curved damper door for controlling the admission of combustion air into an inner region of the outer register; each damper door is configured to impart a rotational component to the first stream of air while urging it axially towards a burner region. A connector for connecting the register to the combustion air region includes a plurality of apertures for communicating a second stream of air from the wind box to an outlet region of the register. The second stream of air inhibits the development of undesirable flow patterns in the first stream of air as the first stream leaves the register. An inner register assembly provides a third stream of air for the burner that flows substantially axially from an axial inlet opening to the burner region. A seal comprising a plurality of overlapping, radial sealing members for providing a sealing interface between the register and a fuel pipe assembly extending through the register.
REFERENCES:
patent: 1527214 (1925-02-01), Peabody
patent: 1628424 (1927-05-01), Peabody
patent: 2320576 (1943-06-01), Dunn
patent: 2838103 (1958-06-01), Voorheis
patent: 3145670 (1964-08-01), Copian et al.
patent: 3743471 (1973-07-01), Jaeger
patent: 3944142 (1976-03-01), Welden et al.
patent: 4504216 (1985-03-01), Hagar et al.
patent: 4681532 (1987-07-01), Chung
Publication entitled "Large Burners and Low NO.sub.X ", distributed by the Foster-Wheeler Energy Corporation and bears a copyright date of 1979.
Foster Wheeler "Experience in No.sub.x Emissions on Operating Steam Generators", Published Nov. 8 & 9, 1978, Hoel Vatsky, Supervisor.
EPRI Journal, Published Nov. 1984 by Electric Power Research Institute, Inc. *pp. 26 through 33*.
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