Method for processing condensed fuel by gasification and a...

C - Chemistry – Metallurgy – 10 – J

Patent

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C10J 3/00 (2006.01) F23G 5/027 (2006.01) F23G 5/20 (2006.01) F27B 7/00 (2006.01)

Patent

CA 2650979

The invention relates to a method for processing condensed fuels, including solid fuel wastes, by pyrolysis and by gasifying the organic constituent thereof. The inventive method can be used for efficiently processing fuels, including fine-dispersed and easily sintering fuels. The inventive method consists in loading a condensed fuel in a reactor to which a gasifying oxygen-containing agent is supplied in a countercurrent manner, in organising a fuel pyrolysis in the reactor and, subsequently, in burning/gasifying pyrolysis carbon residues in the fuel dense layer. The reactor is embodied in the form of a rotary tilting furnace whose tilt angle to the horizon is equal to 22-65° and which is rotatable for stabilising a burning process. Combustible gases produced during pyrolysis and gasification can be used in the form of a fuel.

La présente invention concerne un procédé de traitement de combustibles condensés, notamment de déchets combustibles solides, par la pyrolyse et la gazéification de leur composante organique. Le procédé selon l'invention peut être utilisé pour traiter efficacement des combustibles, notamment des combustibles finement dispersés et facilement frittables. Le procédé selon l'invention consiste : à charger un combustible condensé contenant de l'oxygène dans un réacteur dans lequel un agent gazéifiant est introduit à contre-courant par rapport au combustible; à procéder à la pyrolyse du combustible dans le réacteur, et à brûler/gazéifier ensuite les résidus carbonés de la pyrolyse dans la couche dense du combustible. Le réacteur se présente sous la forme d'un four oscillant rotatif dont l'angle d'inclinaison horizontale est de 22-65 degrés, et est mis en rotation aux fins de stabilisation du processus de combustion. Les gaz combustibles obtenus lors de la pyrolyse et de la gazéification peuvent servir de combustible.

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