Method and reactor for processing of fuels having a wide...

F - Mech Eng,Light,Heat,Weapons – 23 – C

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F23C 3/00 (2006.01) F23C 6/04 (2006.01) F23D 1/02 (2006.01)

Patent

CA 2231839

The object of the invention is a method and reactor for processing fuels with a wide particle size distribution, particularly for flame combustion. The fuel is blown tangentially with the aid of an airflow into a swirl chamber (1) containing a burning mass, thus creating a vortex, from the centre of which a flow of material is led out of the swirl chamber. The vortex created by the feed of the fuel-air mixture and the diameter of the outlet flow are arranged to create a selective delay for coarse particles, so that the size of the particles is reduced, through mechanical treatment caused by evaporation, pyrolysis, and collision, to become smaller than the desired limit value, before they escape from the swirl chamber. The temperature of the cylindrical jacket of the swirl chamber (1) is held below the melting point of the ash.

L'invention concerne un procédé et un réacteur pour le traitement des combustibles présentant une large distribution granulométrique, notamment du point de vue de la combustion de la flamme. Le combustible est soufflé tangentiellement au moyen d'un flux d'air dans une chambre de tourbillonement (1) qui contient une masse en combustion: il en résulte un tourbillon du centre duquel un flux de matériau est entraîné hors de ladite chambre. On fait en sorte que le tourbillon créé par l'arrivée du mélange combustible-air et que le diamètre du flux de sortie occasionnent un retard sélectif pour les particules grossières si bien que, avant de sortir de la chambre de tourbillonement, les particules subissent une réduction de taille en-deçà de la valeur limite souhaitée, au moyen d'un traitement mécanique obtenu par évaporation, pyrolyse et collision. La température de l'enveloppe cylindrique de la chambre de tourbillonement (1) est maintenue au-dessous du point de fusion de la cendre.

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