Equipment for the leaching of solid matter from sludge

Details Equipment for the leaching of solid matter from sludge Equipment for the leaching of solid matter from sludge

B - Operations, Transporting

01

F

B01F 3/04 (2006.01) B01F 5/10 (2006.01) B01F 7/18 (2006.01) C02F 11/06 (2006.01) B01F 7/00 (2006.01)

Patent

CA 2381480

The present invention concerns equipment for the leaching of solid matter from a sludge with the aid of a gas containing oxygen, the said equipment comprising a tall reactor (1) equipped with a central pipe (2) and from the reactor bottom (3), an upward-directed double-action mixer (5). The mixer is situated in the vicinity of the lower edge of the central pipe: the upper blades (13) of the mixer produce a downward suction flow from the central pipe, and the lower blades (14) disperse the gas to be fed into the sludge in the form of small bubbles, thereby preventing the solid matter from settling to the bottom of the reactor.

Cette invention se rapporte à un équipement permettant le lessivage de la matière solide contenue dans une boue à l'aide d'un gaz contenant de l'oxygène, cet équipement comprenant un réacteur allongé (1) comportant un tuyau central (2) et, partant du fond du réacteur (3), un mélangeur à double action (5) dirigé vers le haut. Ce mélangeur est situé à proximité du bord inférieur du tuyau central. Les aubes supérieures (13) du mélangeur produisent un courant d'aspiration vers le bas à partir du tuyau central, et les aubes inférieures (14) dispersent le gaz devant être injecté dans la boue sous la forme de petites bulles, ce qui empêche la matière solide de se déposer au fond du réacteur.

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