To provide a continuous heating device capable of performing stable and efficient heating treatment while reducing the formation of NOx in leading heated objects to a plurality of combustion zones to perform heating treatment.
The continuous heating furnace sequentially heats the heated objects 1 by burning heating devices 20 provided in the plurality of combustion zones 10a-10d, and uses a first heat storage type burner and a second heat storage type burner in at least one combustion zone, wherein the first heat storage type burner leads, to a combustion part on the furnace 10 side, combustion air from an air lead-in part through a heat storage part for storing the heat of combustion exhaust gas, and fuel through a first fuel supply nozzle, and the second heat storage type burner burns, in the furnace, combustion air supplied from an air supply part through a heat storage part for storing the heat of combustion exhaust gas, and fuel led from a second fuel supply nozzle provided on the outer peripheral side of the air supply part.
COPYRIGHT: (C)2008,JPO&INPIT
Tatsuo Tanaka
Noriyuki Saito
Kenichiro Kijima
Makoto Kobayashi
Nippon Steel & Sumitomo Metal Corporation
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