RADIANT TUBE BURNER AND METHOD OF OPERATING RADIANT TUBE BURNERS

WIPO Patent Application WO/1996/009496

A1

This invention relates to a radiant tube burner used for heating a heating furnace, and aims at minimizing the occurrence of NOx during combustion and forming the radiant tube burner to a structure suitable therefor. This invention aims at simplifying the controlling of a fuel supply system and an air supply system, and preventing the necessity of a coking operation. This invention also aims at providing a combustion control method suitable for a radiant tube burner. To achieve these objects, the free ends of fuel nozzles in the present invention, for example, nozzles (11) serving also as pilot nozzles and air throats (13) are disposed in the end portions of a radiant tube (3), and combustion air ejection ports (33) of the air throats (13) are provided eccentrically so as to contact or get close to an inner circumferential wall surface of the radiant tube (3). A controller (307) for subjecting the burner to alternating combustion is also provided.

FUJII YOSHIKI (JP)
ISHII TOSHIO (JP)
SUGIYAMA SHUNICHI (JP)
TANAKA RYOICHI (JP)
MATSUO MAMORU (JP)
MIYATA MAKOTO (JP)
KURIOKA SHIGEO (JP)
SATO HIROAKI (JP)
HOKABORI AKINORI (JP)
AKIYAMA TOSHIKAZU (JP)

PCT/JP1995/001916

March 28, 1996

September 22, 1995

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NIPPON KOKAN KK (JP)
NIPPON FURNACE KOGYO KK (JP)
FUJII YOSHIKI (JP)
ISHII TOSHIO (JP)
SUGIYAMA SHUNICHI (JP)
TANAKA RYOICHI (JP)
MATSUO MAMORU (JP)
MIYATA MAKOTO (JP)
KURIOKA SHIGEO (JP)
SATO HIROAKI (JP)
HOKABORI AKINORI (JP)
AKIYAMA TOSHIKAZU (JP)

F23C3/00; F23D14/22; F23D14/66; F23L15/02; (IPC1-7): F23D14/12; F23C3/00; F23D3/30

JPH0223950Y2	1990-06-29
JPS6363806B2	1988-12-08
JPH0665705U	1994-09-16

See also references of EP 0736732A4

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