Mixing system for introducing and dispersing gas into liquids

Details Mixing system for introducing and dispersing gas into liquids Mixing system for introducing and dispersing gas into liquids

B - Operations, Transporting

01

F

B01F 3/04 (2006.01) B01F 7/18 (2006.01)

Patent

CA 2345039

A mixing system utilizes up pumping axial flow impellers (14, 16, 18) which entrain gas into the liquid both at the surface (12) and below the surface by induction to draw gas down below the surface where it is dispersed into the circulation produced by the impellers (14, 16, 18). Tubes (48) are disposed on the suction sides of the impeller blades (14, 16, 18), and provide gas outlets near the tips (50) of the blades (14, 16, 18). The tubes (48) may extend along the shaft above the surface or into a hollow shaft having a breathing opening (46) above the surface (12). The rotation of the impellers (14, 16, 18) produces a suction at the tube outlets to draw gas into the liquid while the upward circulation produces surface turbulence for gas entrainment.

Système de mélange mettant en application des hélices de pompage (14, 16, 18) à écoulement axial qui entraînent le gaz vers l'intérieur du liquide à la fois en surface (12) et sous la surface par attraction du gaz au-dessous de la surface, ce gaz étant alors dispersé à l'intérieur de la circulation produite par les hélices (14, 16, 18). Des tubes (48) sont situés sur les côtés aspiration des pales d'hélice (14, 16, 18) et constituent des sorties de gaz à proximité des extrémités (50) des pales (14, 16, 18). Ces tubes (48) peuvent s'étendre le long de l'arbre au-dessus de la surface ou vers l'intérieur d'un arbre creux possédant une ouverture de respiration (46) au-dessus de la surface (12). La rotation des hélices (14, 16, 18) produit une aspiration au niveau des sorties des tubes, ce qui attire le gaz à l'intérieur du liquide, tandis que la circulation vers le haut produit des turbulences de surface servant à entraîner le gaz.

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