Low NO.sub.x short flame burner

Details Low NO.sub.x short flame burner Low NO.sub.x short flame burner

1991-08-23

1993-04-06

Price, Carl D.

Furnaces

Including fluid fuel burner

Powdered solid fuel

431183, 431187, 431189, F23C 112

Patent

active

051993554

ABSTRACT:
A burner for the combustion of a fuel plus air mixture comprises a central nozzle pipe having an inner surface with a portion which diverges outwardly. An axially moveable plug is positioned within the nozzle pipe and includes an outer wall with a diverging section extending within the diverging section of the nozzle pipe. By axially moving the plug, the cross sectional area of the space between the diverging surfaces increases and decreases for respectively decreasing and increasing the velocity of the fuel plus air mixture passing through the nozzle space. This reduces the formation of NO.sub.x and the length of the flame produced by the burner.

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European Pat. No. 031582, Skoog et al, May 1989.
Developmental Status of B&W's Second Generation Low NO.sub.x Burner-the XCL Burner; A. D. LaRue & M. A. Acree-1987 Jt. Symposium on Stationary Comb. NO.sub.x Control-Mar. 23-26, 1987-New Orleans, La. Sponsored by U.S. EPA & E.P.R.I.-Entire Document.

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