Method and device for producing and utilizing gas from waste...

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

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F23G 5/027 (2006.01) C10J 3/20 (2006.01) F23G 5/16 (2006.01) F23G 5/46 (2006.01) F23L 7/00 (2006.01)

Patent

CA 2222819

In this process for gasifying and burning waste materials, the waste materials are introduced into an incinerator (1) and end up on a burning grate (6) to which air is conducted by means of various undergrate forced draft chambers (8a to 8e). In the first area air is introduced at a superstoichiometric level in order to ignite the waste materials. Then, via the undergrate forced draft chambers (8c to 8e), oxygen is mixed into the air which is used for the gasification, at the same time establishing a substoichiometric level which leads to gasification of the waste materials. These combustible gases which come about in the process pass via the waste gas flue (12) into a second furnace (2), in which the gases are burned at a superstoichiometric level through the introduction of combustion air. The resulting waste gases pass to a heat exchanger (3). (Figure)

Méthode destinée à la gazéification et à l'incinération des déchets selon laquelle les déchets sont introduits dans un incinérateur (1) et acheminés vers une grille d'incinération (6) alimentée en air au moyen de diverses chambres de courant d'air forcé sous la grille (8a à 8e). L'air est amené dans la première zone à un niveau superstoechiométrique en vue d'enflammer les déchets. L'oxygène est ensuite mélangé à l'air utilisé pour la gazéification, via les chambres de courant d'air forcé sous la grille (8a à 8e), établissant ainsi un niveau substoechiométrique qui entraîne la gazéification des déchets. Les gaz combustibles ainsi produits sont acheminés via un carneau (12) vers un deuxième four (2) où ils sont brûlés à un niveau superstoechiométrique atteint grâce à l'adduction d'air de combustion. Les gaz ainsi brûlés traversent un échangeur de chaleur (3). (Figure)

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