Apparatus for use in burning pulverized fuel

Details Apparatus for use in burning pulverized fuel Apparatus for use in burning pulverized fuel

1994-01-21

1995-07-04

Nelli, Raymond A.

Furnaces

Utilizing powdered fuel

F23D 100

Patent

active

054290600

ABSTRACT:
A structure of a boiler, of the type in which pulverized fuel is burnt within a square barrel-shaped furnace having a vertical axis, is improved so that ignitability is improved and the amount of NO.sub.x produced is decreased. Burners for injecting pulverized fuel-air mixtures are disposed at the central portions of respective edges in a horizontal cross-section of a furnace wall and are inclined downwardly with respect to a horizontal plane. Also, under air nozzles for feeding air are disposed under the respective burners.

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