A process and apparatus for treating solid fuel materials

Details A process and apparatus for treating solid fuel materials A process and apparatus for treating solid fuel materials

C - Chemistry, Metallurgy

10

J

C10J 3/02 (2006.01) C10J 3/26 (2006.01)

Patent

CA 2348406

Solid fuels, such as contaminated biomass and solid city waste, are converted into a synthesized gas by gasification and exploitation of the energy contained in the fuels. The fuel is gasified in a co-current gasogen (1), while the cinders are separated, removed and purified after a fraction of the fuels has undergone combustion and before the fuel has been gasified. Cinder purification is made by complete combustion, while the fuel that has undergone the gasification step without being completely transformed in CO is recirculated by mixing it to fresh fuel material. The process is carried out in an apparatus comprising a vertical co-current gasogen (1) and a device for the separation and removal of cinders (16, 19, 5, 6) as well as a scorification chamber (3) where cinders are purified from accompanying fuel material by complete combustion and are then collected in a waste tank (28).

D'après cette invention, des combustibles solides, tels que les biomasses contaminées ou des déchets urbains solides, sont transformés en un gaz de synthèse par un processus de gazéification et en utilisant l'énergie contenue dans ces combustibles. Le combustible est gazéifié dans un gazogène à co-courant (1), tandis que les cendres sont séparées, éliminées puis purifiées après combustion d'une fraction du combustible et avant que ledit combustible ne soit gazéifié. La purification des cendres se fait par combustion complète. Le combustible qui a subi l'étape de gazéification sans être complètement transformé en CO est remis en circulation en le mélangeant à des matériaux combustibles frais. Ce processus se déroule dans un appareil qui comprend les éléments suivants: un gazogène vertical à co-courant (1); un dispositif de séparation et d'élimination des cendres (16, 19, 5, 6); et enfin, une chambre de scorification (3) où les cendres sont débarrassées du matériau combustible qui les accompagne par combustion complète avant d'être ensuite recueillies dans un réservoir de déchets (28).

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