Combustion – Process of combustion or burner operation – Flame shaping – or distributing components in combustion zone
Reexamination Certificate
2005-03-22
2005-03-22
Basichas, Alfred (Department: 3749)
Combustion
Process of combustion or burner operation
Flame shaping, or distributing components in combustion zone
C431S115000, C126S09100A
Reexamination Certificate
active
06869277
ABSTRACT:
A method and apparatus for use in burners of furnaces such as those used in steam cracking. The apparatus includes a burner tube having a burner tip mounted on the downstream end of the burner tube adjacent to a first opening in the furnace, so that combustion of the fuel takes place downstream of the burner tip. At least one passageway from a second opening in the furnace ending adjacent to the upstream end of the burner tube is provided. Also provided is a means for drawing flue gas from the furnace through the passageway in response to an inspirating effect created by uncombusted fuel flowing through the burner tube. At least one heat exchange tube disposed in the passageway wherein air that is cooler than the flue gas flows through the heat exchange tube into a secondary air chamber permitting heat to be transferred from the flue gas to the air to create preheated air.
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Basichas Alfred
ExxonMobil Chemical Patents Inc.
Lomas Lucinda
LandOfFree
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