Combustion burner and combustion method thereof in furnace

Details Combustion burner and combustion method thereof in furnace Combustion burner and combustion method thereof in furnace

F - Mech Eng,Light,Heat,Weapons

23

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F23D 14/22 (2006.01) F23C 5/00 (2006.01) F23C 9/00 (2006.01) F23D 14/58 (2006.01) F23D 23/00 (2006.01) F23L 15/02 (2006.01)

Patent

CA 2197148

A combustion burner comprises: an air supply passage for supplying an air to a heating furnace; a primary fuel nozzle for supplying a primary fuel to the air supply passage; secondary fuel nozzles arranged around the air supply port of the air supply passage; and secondary fuel nozzles being arranged so that a distance L (mm) from an outer periphery of the air supply port to the 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.

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