(19)
(11) EP 1 136 776 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
14.08.2002 Bulletin 2002/33

(43) Date of publication A2:
26.09.2001 Bulletin 2001/39

(21) Application number: 01200982.5

(22) Date of filing: 16.03.2001
(51) International Patent Classification (IPC)7: F27B 7/34
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 22.03.2000 IT MI000598

(71) Applicant: ITALCEMENTI S.p.A.
24100 Bergamo (IT)

(72) Inventor:
  • Rizzi, Roberto
    Monza (Milan) (IT)

(74) Representative: De Gregori, Antonella 
Ing. Barzano & Zanardo Milano S.p.A. Via Borgonuovo 10
20121 Milano
20121 Milano (IT)

   


(54) Device for injecting solid fuels in atomised form into a cement kiln


(57) A device (10) for injecting solid fuels in atomised form into a cement kiln (12) is installed at the mouth of a burner (11), and comprises a nozzle for liquid fuels (5), a first pipe (4), coaxial to the nozzle of liquid fuels (5), and an annular piping (1), for injecting the solid fuel in atomised form. In such device (10), the annular piping (1) is divided into a plurality of sectors (1a, 1b) converging towards the burner mouth, so as to allow the formation of alternate rich solid fuel flows, and poor solid fuel flows. The device (10) also exhibits an outside baffle (3) for addressing the primary and secondary air flows, maintaining them sufficiently separate for controlling the first stages of the combustion process relating to the NOx formation.






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