Waste treatment apparatus and method

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

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F23J 15/02 (2006.01) F23G 5/027 (2006.01)

Patent

CA 2443854

The present invention relates to waste treatment apparatus and method for combusting and treating wastes such as municipal wastes, refuse-derived fuel (RDF), and plastic wastes. The waste treatment apparatus (101) comprises a gasification furnace (5) for gasifying wastes (a) to produced combustible gas (m), a slagging combustion furnace (8) for combusting the combustible gas and melting solid components contained in the combustible gas to generate exhaust gas (j), a first filter (13a) for filtrating the exhaust gas discharged from the slagging combustion furnace and collecting fly ash (h1) contained in the exhaust gas, an injection device for injecting a neutralizer into the exhaust gas discharged from the first filter, a second filter for filtrating the exhaust gas, and collecting neutralized ash, a recovery device (14) for recovering the neutralized ash, and a conveying device (41a) for conveying fly ash collected by the first filter to the slagging combustion furnace.

La présente invention concerne un appareil et un procédé de traitement des déchets destiné au brûlage et au traitement des déchets tels que des ordures ménagères, du carburant dérivé d'ordures (RDF), et des déchets plastiques. L'appareil de traitement des déchets (101) comprend un four de gazéification (5) permettant de gazéifier les déchets (a) pour produire du gaz combustible (m), un four à combustion de scorification (8) permettant de brûler le gaz combustible et les composants solides en fusion contenus dans le gaz combustible pour générer du gaz de fumées (j), un premier filtre (13a) permettant de filtrer le gaz de fumées déchargé à partir du four de combustion de scorification et de recueillir des cendres volantes (h1) contenues dans le gaz de fumées, un dispositif d'injection permettant d'injecter un neutralisant dans le gaz de fumées déchargé à partir du premier filtre, un second filtre permettant de filtrer le gaz de fumées, et de recueillir les cendres neutralisées, un dispositif de récupération (14) permettant de récupérer les cendres neutralisées, et un dispositif de transport (41a) permettant de transporter les cendres volantes recueillies par le premier filtre vers le four à combustion de scorification.

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