(19)
(11) EP 0 028 458 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.01.1982 Bulletin 1982/03

(43) Date of publication A2:
13.05.1981 Bulletin 1981/19

(21) Application number: 80303472

(22) Date of filing: 02.10.1980
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI NL SE

(30) Priority: 03.10.1979 GB 7934241
06.03.1980 ZA 801307
11.04.1980 GB 8012013
06.05.1980 GB 8014964
10.06.1980 GB 8018852
11.08.1980 ZA 804876

(71) Applicant: WORLD ENERGY RESOURCES CONSULTANCY SERVICE (PTY) LIMITED
 ()

(72) Inventors:
  • Swithenbank, John
     ()
  • Miller, John Moore
     ()

   


(54) Fluidised-bed boilers and method of operating the same


(57) This invention relates to boilers and in particular to fluidised bed boilers and burners, and to a method of controlling such boilers and provides a base plate which is water cooled during operation by virtue of having the combustion chamber located within the water jacket of the boiler. The invention provides a method and apparatus for reconditioning the bed, thereby reducing the necessity of topping up the bed with new sand or a similar carrier material as well as an accurate system of controls for the boiler. A vertical and a horizontal boiler incorporating the above mentioned features are described.






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