(19)
(11) EP 1 846 694 A1

(12)

(43) Date of publication:
24.10.2007 Bulletin 2007/43

(21) Application number: 06708960.7

(22) Date of filing: 09.02.2006
(51) International Patent Classification (IPC): 
F23C 10/22(2006.01)
F23K 3/02(2006.01)
 F23G 7/10(2006.01)
(86) International application number:
PCT/FI2006/050056
(87) International publication number:
WO 2006/084954 (17.08.2006 Gazette 2006/33)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

(30) Priority: 11.02.2005 FI 20055063

(71) Applicant: Metso Power Oy
33101 Tampere (FI)

(72) Inventors:
  • DERNJATIN, Pauli
    FI-00620 Helsinki (FI)
  • FABRITIUS, Marko
    FI-00420 Helsinki (FI)
  • RÖPPÄNEN, Jukka
    FI-01450 Vantaa (FI)

(74) Representative: Rönkkö, Taina Mirjam 
Tampereen Patenttitoimisto Oy Hermiankatu 12 B
33720 Tampere
33720 Tampere (FI)

   


(54) A METHOD FOR REDUCING NITROGEN OXIDE EMISSIONS OF A BUBBLING FLUIDIZED BED BOILER AND AN AIR DISTRIBUTION SYSTEM OF A BUBBLING FLUIDIZED BED BOILER