Gas and liquid contact apparatus – Contact devices – Rotating
Patent
1983-01-20
1985-06-04
Chiesa, Richard L.
Gas and liquid contact apparatus
Contact devices
Rotating
209169, 209170, 210219, 2102211, 261 87, 261DIG7, 366102, 366103, 366293, 366296, 422228, 435315, B01F 304
Patent
active
045213496
ABSTRACT:
A fluid diffuser for dispersing a gas or liquid into a body of receiving liquid in which it is immersed. The diffuser includes a rotatable shaft, a thin disk-like member mounted for rotation on the shaft, and an annular ring positioned adjacent the outer perimeter of the disk-like member. At least one of the top and bottom walls of the annular ring is porous. These top and bottom walls define a fluid plenum, into which gas or liquid under pressure is introduced to be emitted from the plenum as small, nascent fluid spheroids on the surface of the annular ring. The boundary layer flow from rotation of the disk-like member within the body of receiving liquid shears fine gas bubbles or liquid particles from the foraminous surface or surfaces of the annular ring. The annular ring may be fixed, or rotatable in the opposite annular direction from the rotation of the disk. Impeller blades may be mounted on the top and/or bottom surfaces of the rotatable disk. The fluid diffuser is disclosed immersed in a flotation tank with a system of baffles to define a mixing zone at the bottom of the tank and a flotation zone at the top of the tank. Preferred embodiments of the diffuser include features to improve the mixing as well as diffusing action of the device.
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Weber Richard B.
Wilfley George M.
A. R. Wilfley and Sons, Inc.
Chiesa Richard L.
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