Smokeless ignitor

Details Smokeless ignitor Smokeless ignitor

1989-03-14

1991-01-29

Dority, Carroll B.

Combustion

Fuel disperser installed in furnace

Spaced fuel dispersing orifices within furnace

431285, 431187, 431188, 431 8, 431 9, 239434, F23C 528

Patent

active

049882864

ABSTRACT:
The smokeless ignitor of the present invention prevents visible emissions upon cold or hot start-up of coal-fired or oil-fired utility boilers. The smokeless ignitor satisfies flame stability and combustion requirements by establishing a flame with 15-30% mass recirculation rate, a recirculation zone length of 0.75-1.5 effective throat diameters, a spray SMD of less than 120 microns and a STU value of .+-.50% or less.

REFERENCES:
patent: 2414459 (1947-01-01), Fletcher
patent: 2831535 (1958-04-01), Lange
patent: 3088681 (1963-05-01), McCutcheon
patent: 3867092 (1975-02-01), Sage et al.
patent: 4095929 (1978-06-01), McCartney
patent: 4162140 (1979-07-01), Reed
patent: 4601428 (1986-07-01), Kurogo
patent: 4784043 (1988-11-01), Kobayashi et al.

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