Burner employing steam injection

Details Burner employing steam injection Burner employing steam injection

2006-01-17

2006-01-17

Yeung, James C. (Department: 3749)

Combustion

Combustion products return structure

C431S009000, C431S116000, C431S190000

Reexamination Certificate

active

06986658

ABSTRACT:
Method and apparatus for use in burners of furnaces such as those used in steam cracking. The apparatus includes a burner tube having a downstream end and an upstream end for receiving fuel and air, flue gas or mixtures thereof. 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 takes place downstream of the burner tip. At least one passageway has a first end at a second opening in the furnace and a second end in a primary air chamber adjacent the upstream end of the burner tube. The passageway also has structure for injecting steam into the passageway and a means for drawing flue gas from the furnace through the passageway.

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