Method of manufacturing a sorbent, a sorbent obtained by...

Details Method of manufacturing a sorbent, a sorbent obtained by... Method of manufacturing a sorbent, a sorbent obtained by...

B - Operations, Transporting

01

J

B01J 20/16 (2006.01) B01D 53/02 (2006.01) B01D 53/50 (2006.01) B01D 53/64 (2006.01) B01D 53/70 (2006.01) B01J 20/30 (2006.01)

Patent

CA 2339985

The present invention relates to a method of manufacturing a sorbent suitable for removing a metal from a stream of hot gas out of a calcium and kaolin-containing raw material such as paper or other residues stemming from the production of paper and the recycling of waste paper. The raw material is thermally treated in a fluidized bed having a freeboard whereby the fluidized bed is operated at a temperature between 720 and 850 °C and the temperature of the freeboard is 850 °C or below so that the material is converted to a meta-kaolin containing substance forming the sorbent.

Cette invention se rapporte à un procédé de fabrication d'un sorbant utilisable pour éliminer un métal d'un courant de gaz chaud contenu dans une matière brute renfermant du calcium et du kaolin, telle que du papier ou d'autres déchets provenant de la production de papier et du recyclage de vieux papiers. Cette matière brute est traitée par voie thermique dans un lit fluidisé ayant un franc bord, le lit fluidisé agissant à une température comprise entre 720 et 850 DEG C et la température du franc bord étant inférieure ou égale à 850 DEG C de telle sorte que la matière soit convertie en une substance renfermant du métakaolin, destinée à former le sorbant.

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