(19)
(11) EP 0 017 721 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.12.1980 Bulletin 1980/25

(43) Date of publication A2:
29.10.1980 Bulletin 1980/22

(21) Application number: 80100740

(22) Date of filing: 14.02.1980
(84) Designated Contracting States:
BE DE FR GB IT SE

(30) Priority: 13.04.1979 US 29605
13.04.1979 US 29606

(71) Applicant: SALZGITTER LUMMUS GMBH
 ()

(72) Inventors:
  • Kokkinos, Angelos
     ()
  • McCartney, Michael Scott
     ()

   


(54) Low load coal bricket and method of operating a pulverised coal-fired furnace


(57) An improved fuel-air admission assembly incorporating a split coal bucket which permits a pulverized coal-fired furnace to be operated at low loads without the use of auxiliary fuel to provide stabilization. The split coal bucket comprises an upper and a lower coal nozzle pivotally mounted to the coal delivery pipe, the upper and lower coal nozzles being independently tiltable. When the furnace is operating at low loads, the primary air and pulverized coal stream discharging from the coal delivery pipe is split into a first and a second-air stream and independently directed into the furnace by tilting at least one of the nozzles away from the longitudinal axis of the coal delivery pipe, thereby establishing an ignition stabilizing pocket in the locally low pressure zone created between the spread apart coal-air streams.






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