(19)
(11) EP 0 484 302 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
21.10.1992 Bulletin 1992/43

(43) Date of publication A2:
06.05.1992 Bulletin 1992/19

(21) Application number: 91830476.7

(22) Date of filing: 31.10.1991
(51) International Patent Classification (IPC)5: F23D 1/00, F23D 17/00, F23K 3/02
(84) Designated Contracting States:
BE DE ES FR GB NL

(30) Priority: 02.11.1990 IT 4843890

(71) Applicant: Ente per le nuove tecnologie, l'energia e l'ambiente (ENEA)
I-00198 Roma (IT)

(72) Inventors:
  • Floris, Francesco
    I-09128 Cagliari (IT)
  • Partesotti, Corrado
    I-41040 Spezzano (IT)

(74) Representative: Sarpi, Maurizio 
Studio FERRARIO Via Collina, 36
I-00187 Roma
I-00187 Roma (IT)


(56) References cited: : 
   
       


    (54) Automatically operated burner of coal dust or any other solid fuel


    (57) A burner of coal dust or any other powdery solid fuel includes a powder fuel metering device (1) and an enbloc combustion head having horizontal axis which is supplied by said metering device and includes a plurality of tubular coaxial ducts, i.e. a central cylindrical duct (20) for supplying coal dust mixed with air which is provided with an atomizing nozzle (21), a concentric tubular duct (24) for the swirling air, a duct (26) for the air-gas mixture which is provided with a ring of auxiliary firing holes (28), and a duct (29) for the combustion air surrounding the whole assembly and provided at its end with a ring of holes (32) converging to the axis and axially misaligned so as to cause the air to swirl.






    Search report