Burner design for reduced NOx emissions

Details Burner design for reduced NOx emissions Burner design for reduced NOx emissions

2005-05-17

2005-05-17

Basichas, Alfred (Department: 3749)

Combustion

Process of combustion or burner operation

Flame shaping, or distributing components in combustion zone

C431S005000, C126S09100A

Reexamination Certificate

active

06893251

ABSTRACT:
A staged-air burner for use in furnaces such as in steam cracking. The burner includes a burner tube including (i) a downstream end, (ii) an upstream end for receiving fuel and air, flue gas or mixtures thereof from a primary air chamber, and (iii) a burner tip mounted on the downstream end of said burner tube and directed to the first flame opening in the furnace, so that combustion of the fuel takes place downstream of said burner tip; a secondary air chamber for supplying a second portion of combustion air, said secondary air chamber in fluid communication with at least one air port; and a wall peripherally surrounding said burner tip to provide a barrier between a base of a flame at said burner tip and said at least one air port.

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