Combustion – Process of combustion or burner operation – Flame shaping – or distributing components in combustion zone
Reexamination Certificate
2006-03-21
2006-03-21
Price, Carl D. (Department: 3749)
Combustion
Process of combustion or burner operation
Flame shaping, or distributing components in combustion zone
C431S008000, C431S009000, C431S187000, C431S173000
Reexamination Certificate
active
07014458
ABSTRACT:
Methods and apparatus for combustion of a hydrocarbon fuel in a combustion chamber of a furnace or boiler are presented, the combustion normally using only air as an oxidant, part of the air entering the combustion chamber through one or more burners, and a remaining portion of air entering the combustion chamber at a plurality of locations downstream of the burners. The methods comprise injecting oxygen-enriched gas through a plurality of lances into the combustion chamber at a plurality of downstream locations, the oxygen-enriched gas injected at a velocity ranging from subsonic to supersonic, and the oxygen-enriched gas being present in an amount sufficient to provide an oxygen concentration of no more than 2% on a volume basis greater than when air is used alone as oxidant.
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Bugeat Benjamin
Di Zanno Pietro
Marin Ovidiu
Streicher Eric
American Air Liquide Inc.
Cronin Christopher J.
L'Air Liquide, Societe Anonyme a Directoire et Conseil de Survei
Price Carl D.
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