Combustion – Process of combustion or burner operation – Feeding flame modifying additive
Reexamination Certificate
2006-09-12
2006-09-12
Carter, Monica S. (Department: 3749)
Combustion
Process of combustion or burner operation
Feeding flame modifying additive
C431S009000, C431S011000, C431S116000, C431S215000, C432S182000
Reexamination Certificate
active
07104784
ABSTRACT:
The present invention provides a fuel feeding apparatus and method for improving the controllability of mixing process and mixing ratio of fuel and combustion air, and a combustion system and method for effecting new combustion properties. The fuel feeding apparatus of the combustion system has fuel feeding means, combustion gas extraction means, steam supply means, mixing means and fuel gas introduction means. The combustion gas extraction means extracts combustion gas of a combustion area therefrom. The mixing means mixes the fuel of fuel feeding means with at least one of combustion gas extracted from the furnace and steam of a steam generator. The fuel gas introduction means introduces a mixed fluid of combustion gas, steam and fuel to the combustion area as a fuel gas, and allows the fuel gas to be mixed with the combustion air. A step of mixing the fuel with the combustion gas after extracted from the furnace and a step of mixing the fuel gas with the combustion air are stepwisely carried out, so that the controllability of mixing process and ratio of the air and fuel is improved. Such a control of fuel gas flow enables control of characteristics of flame and production of flame with new properties in the combustion area.
REFERENCES:
patent: 4995807 (1991-02-01), Rampley et al.
patent: 6193823 (1994-07-01), None
patent: 7103411 (1995-04-01), None
patent: 10219354 (1998-08-01), None
Hasegawa Toshiaki
Hoshino, legal representative Kiyoko
Mochida Susumu
Barrow James G.
Carter Monica S.
Dennison Schultz Dougherty & MacDonald
Nippon Furnace Kogyo Kaisha Ltd.
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