Combustion – Fuel disperser installed in furnace – Plural feed means extending to common wall opening of furnace
Reexamination Certificate
2008-05-06
2008-05-06
Basichas, Alfred (Department: 3749)
Combustion
Fuel disperser installed in furnace
Plural feed means extending to common wall opening of furnace
C431S183000, C431S284000, C431S351000, C431S009000
Reexamination Certificate
active
11100731
ABSTRACT:
An air swirler capable of liquid fuel atomization for a fuel fired burner in a furnace or boiler having a hollow guide pipe supporting several swirl blades at an end adjacent to the furnace. Openings connected by tunnels to the inside of the guide pipe are provided in the trailing edges of each swirl blade. A fuel pipe is concentric with the guide pipe forming an annular space therebetween. Gaseous substances such as oxygen or natural gas are provided through the annular space and liquid fuel is provided through the fuel pipe. The fuel and gaseous substances travel through the tunnels to the openings for liquid fuel atomization and pre-mixing at the burner throat to reduce NOxformation.
REFERENCES:
patent: 5470224 (1995-11-01), Bortz
patent: 6152054 (2000-11-01), Ashworth et al.
Basichas Alfred
Marich Eric
Seymour Michael J.
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