Combustion – Process of combustion or burner operation – Flame shaping – or distributing components in combustion zone
Reexamination Certificate
2006-04-11
2006-04-11
Basichas, Alfred (Department: 3749)
Combustion
Process of combustion or burner operation
Flame shaping, or distributing components in combustion zone
C431S005000, C431S115000, C126S09100A
Reexamination Certificate
active
07025587
ABSTRACT:
An improved burner and a method for combusting fuel in burners used in furnaces, such as those used in steam cracking, are disclosed. The burner includes a burner tube having an upstream end, a downstream end and a venturi intermediate said upstream and downstream ends, the venturi including a throat portion having substantially constant internal cross-sectional dimensions such that the ratio of the length to maximum internal cross-sectional dimension of the throat portion is at least 3. A burner tip is mounted on the downstream end of the burner tube adjacent a first opening in the furnace, so that combustion of the fuel gas takes place downstream of said burner tip.
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Spicer David B.
Stephens George
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