A method and an apparatus for upgrading a solid material

Details A method and an apparatus for upgrading a solid material A method and an apparatus for upgrading a solid material

B - Operations, Transporting

01

D

B01D 43/00 (2006.01) C10F 5/00 (2006.01) F26B 3/06 (2006.01) F26B 3/20 (2006.01) F26B 7/00 (2006.01) F26B 21/00 (2006.01) F26B 23/00 (2006.01)

Patent

CA 2301768

A method and an apparatus for upgrading a solid material is disclosed. The method comprises heating the solid material to an elevated temperature to remove water and thereafter cooling the upgraded solid material. The method includes providing a plurality of vessels containing packed beds of the solid material and one as more than one heat exchange circuit for heating and cooling the solid material in the packed beds in the vessels by heat exchange with a heat transfer fluid. The method is controlled so that the solid material in a first group of the vessels is at one or more stages of a heating cycle and the solid material in a second group of vessels is at one or more stages of a cooling cycle. Specifically, the method is controlled by selectively connecting the one or more than one heat exchange circuit to the vessels so that the heat transfer fluid recovers heat from the solid material undergoing the cooling cycle in at least one of the vessels in the first group and transfers the recovered heat to the solid material undergoing the heating cycle in at least one of the vessels in the second group.

L'invention concerne un procédé et un appareil de valorisation d'une matière solide. Le procédé consiste à chauffer la matière solide jusqu'à une température élevée de manière à éliminer l'eau, puis à refroidir la matière solide valorisée. Le procédé consiste à utiliser une pluralité de bacs contenant des lits tassés de matière solide et un ou plusieurs circuits d'échange thermique destinés au chauffage et au refroidissement de la matière solide dans les lits tassés des bacs à l'aide d'un fluide caloporteur. On gère le processus de manière que la matière solide d'un premier groupe de bacs subisse une ou plusieurs phases du cycle de chauffage et que la matière solide d'un second groupe de bacs subisse une ou plusieurs phases du cycle de refroidissement. En particulier, on gère le processus par connexion sélective des circuits d'échange thermique avec les bacs de façon que le fluide caloporteur se réchauffe au contact de la matière solide en phase de refroidissement dans l'un au moins des bacs du premier groupe, puis transmette cette chaleur à la matière solide en phase de chauffage dans l'un au moins des bacs du second groupe.

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