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BURNER DESIGN WITH HIGHER RATES OF FLUE GAS RECIRCULATION AND REDUCED NOx EMISSIONS
BURNER DESIGN WITH HIGHER RATES OF FLUE GAS RECIRCULATION AND REDUCED NOx EMISSIONS
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机译:燃烧器设计具有更高的烟气再循环率和减少的NOx排放
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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.
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