Apparatus for heat treatment of particulate materials

F - Mech Eng,Light,Heat,Weapons – 26 – B

Patent

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Details

F26B 3/02 (2006.01) B01J 8/18 (2006.01) C10L 5/00 (2006.01) F26B 3/22 (2006.01) F26B 17/00 (2006.01) F26B 23/00 (2006.01) F23K 1/04 (2006.01)

Patent

CA 2583547

The present invention constitutes a heat treatment apparatus like a fluidized- bed dryer for heat treating a particulate material in a low temperature, open- air process. Preferably, available waste heat sources within the surrounding industrial plan operation are used to provide heat to the dryer. Moreover, conveyor means contained within the dryer can remove larger, denser particles that could otherwise impede the continuous flow of the particulate material through the dryer or plug the fluidizing dryer. This invention is especially useful for drying coal for an electricity generation plant.

L'invention concerne un appareil de thermotraitement, tel qu'un séchoir à lit fluidisé, destiné à thermotraiter une matière particulaire dans un processus en plein air réalisé à basse température. De préférence, des sources de chaleur résiduaire disponibles dans le voisinage immédiat de l'exploitation industrielle sont utilisées pour alimenter le séchoir en chaleur. De plus, un convoyeur équipant le séchoir peut retirer les particules plus grosses, plus denses, qui pourraient autrement empêcher l'écoulement continu de la matière particulaire à travers le séchoir, ou boucher le séchoir à lit fluidisé. Le procédé de l'invention est particulièrement utile pour sécher le charbon destiné à un générateur électrique.

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