BURNER TRAINING WITH HIGHER GAS REDUCTIONS AND REDUCED NOX EMISSION

摘要

A burner for use in furnaces such as in steam cracking. The burner is located within a first flame opening in a furnace and includes a primary air chamber (26), a burner tube (12) including a downstream end (18), an upstream end (16) in fluid communication with the primary air chamber and a burner tip (20) mounted on the downstream end of the burner tube and directed to the first flame opening in the furnace so that combustion of the fuel takes place downstream of the burner tip, at least one flue gas recirculation duct (76) having a first end at a second opening (82) in the furnace and a second end opening into the primary air chamber, and a wall (95) extending into the furnace between the first flame opening and the first end of the flue gas recirculation duct to substantially lengthen a flow path therebetween and thereby providing a substantial barrier to flow.