Methods for operating a furnace

B - Operations – Transporting – 01 – J

Patent

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B01J 8/18 (2006.01)

Patent

CA 2741645

A method for operating a furnace, such as, for example, a fluidized bed reactor, includes introducing an alkali containing material and a hydrous clay into the furnace, the hydrous clay having a moisture content of at least about 5% by weight. The method further includes heating at least a portion of the alkali containing material and hydrous clay, such that at least a portion of the hydrous clay is at least partially calcined and the at least partially calcined clay adsorbs at least a portion of alkali present in the furnace. The method further includes removing at least a portion of the at least partially calcined clay and adsorbed alkali from the furnace.

L'invention porte sur un procédé permettant de faire fonctionner un four, tel que, par exemple, un réacteur à lit fluidisé. Ce procédé comprend l'introduction d'une matière à teneur en alcali et d'une argile hydratée dans le four, l'argile hydratée ayant une teneur en humidité d'au moins environ 5 % en poids. Le procédé comprend en outre le chauffage d'au moins une partie de la matière à teneur en alcali et l'argile hydratée, de telle sorte qu'au moins une partie de l'argile hydratée est au moins partiellement calcinée et que l'argile au moins partiellement calcinée adsorbe au moins une partie de l'alcali présent dans le four. Le procédé comprend en outre le retrait d'au moins une partie de l'argile au moins partiellement calcinée et de l'alcali adsorbé à partir du four.

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