Split nozzle tip for pulverized coal burner

Details Split nozzle tip for pulverized coal burner Split nozzle tip for pulverized coal burner

1985-03-14

1987-01-06

Peters, Jr., Joseph F.

Fluid sprinkling, spraying, and diffusing

Combining of separately supplied fluids

At or beyond outlet

239498, 239522, F23K 302

Patent

active

046340548

ABSTRACT:
An improved nozzle tip (30) which provides enhanced ignition and stabilization of pulverized fuel flames in furnaces operating at low load. The nozzle tip (30) comprises open-ended inner and outer shells (32,34) mounted to the fuel delivery pipe (12) and defining a flow passageway within the inner shell through which the pulverized fuel is directed into the furnace and an annular flow passageway (50) between the inner and outer shells through which additional air is directed into the furnace. A pair of diverging splitter plates (41,42) are disposed within the inner shell (32) so as to divide the flow passageway therethrough into two separate, diverging subpassages (52,54) so that the pulverized fuel stream discharging from the fuel delivery pipe is split into first and second streams (60,70) which pass from the nozzle tip (30) into the furnace in a diverging manner thereby establishing an ignition stabilizing pocket in the low pressure zone (80) created between the diverging fuel streams.

REFERENCES:
patent: 2363875 (1944-11-01), Kreisinger et al.
patent: 3895759 (1975-07-01), DePalma
patent: 4252069 (1981-02-01), McCartney
patent: 4304196 (1981-12-01), Chadshay et al.

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