Indirect-heat thermal processing of particulate material

Details Indirect-heat thermal processing of particulate material Indirect-heat thermal processing of particulate material

F - Mech Eng,Light,Heat,Weapons

26

B

F26B 17/16 (2006.01) F26B 17/14 (2006.01) F26B 21/00 (2006.01) F26B 23/10 (2006.01)

Patent

CA 2650601

A method and apparatus for indirect-heat thermal processing of material, such as a dryer or evaporator for treatment of particulate material, is provided. In one embodiment, a dryer for drying particulate material comprises a plurality of heat transfer plates arranged in spaced relationship for the flow of the material to be dried therebetween. Each heat transfer plate is provided with an inlet and an outlet for the flow of the heating fluid through the plates. A purge fluid delivery system provides a flow of purge fluid, such as air, gas or steam between the plates in a direction across the direction of flow of the material to be dried. The purge fluid delivery system provides a flow path for the purge fluid which is isolated from the flow of the heating fluid through the plates. A method for the indirect-heat processing of particulate material is also provided.

L'invention concerne un procédé et un appareil permettant le traitement thermique de matériaux par une chaleur indirecte, séchoir ou évaporateur, permettant le traitement d'une matière particulaire. Dans un mode de réalisation, un séchoir pour matière particulaire comprend une pluralité de plaques de transfert de chaleur disposées en relation espacée permettant l'écoulement de la matière devant être séchée entre elles. Chaque plaque de transfert de chaleur est dotée d'une entrée et d'une sortie permettant l'écoulement du fluide chauffant à travers les plaques. Un système de distribution de fluide de purge fournit un courant de fluide de purge, air, gaz ou vapeur d'eau, entre les plaques dans une direction transversale à la direction de l'écoulement de la matière devant être séchée. Le système de distribution de fluide de purge fournit un chemin d'écoulement pour le fluide de purge isolé de l'écoulement du fluide chauffant à travers les plaques. L'invention concerne également un procédé de traitement de la matière particulaire par chaleur indirecte.

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