Brenner und Verbrennungsverfahren in einem Ofen

摘要

A combustion burner (1) comprises: an air supply passage (3) for supplying an air to a heating furnace (11); a primary fuel nozzle (6) for supplying a primary fuel to the air supply passage; secondary fuel nozzles (7) arranged around the air supply port (3A) of the air supply passage; and the secondary fuel nozzles being arranged so that a distance L (mm) from an outer periphery of the air supply port to the outer periphery of the secondary fuel supply port is larger than the diameter Da ( mm ) of the air supply port. A combustion method comprises: injecting fuel substantially from the primary fuel nozzle when an infurnace temperature of the heating furnace is lower than a fuel ignition temperature; and injecting fuel substantially from the secondary fuel nozzle when an infurnace temperature of the heating furnace is higher than a fuel ignition temperature.