Bubble-shearing diffuser

Details Bubble-shearing diffuser Bubble-shearing diffuser

1974-02-28

1976-05-04

Lutter, Frank W.

Gas and liquid contact apparatus

Contact devices

Liquid tank

261124, 261DIG5, 261DIG47, 261DIG70, B01F 304

Patent

active

039549224

ABSTRACT:
Diffusers on the bottom of a submerged header each include coarse bubble orifices which discharge a stream of air to form a bubble or film on the underside of a horizontal spreader at the edges of which the bubble is sheared by flowing water into multitudinous tiny bubblets rising in the surrounding liquid as a cloud. A second horizontal spreader, slightly above the first, has a similar action, shearing into fine bubblets any larger bubbles which escape from the first spreader to the second. Edges are staggered to supply air to different parts of the water flow. The rising bubblets set up a conventional rolling action in the body of liquid. It is this rolling action which produces the flow of water past the spreaders to shear the bubbles at their edges. A snap-in screw-tightened band secures each diffuser to the header.

REFERENCES:
patent: 3153682 (1964-10-01), Walker
patent: 3182978 (1965-05-01), Reilly
patent: 3359017 (1967-12-01), Schaub
patent: 3501133 (1970-03-01), Dreier et al.
patent: 3608834 (1971-09-01), MacLaren
patent: 3781000 (1973-12-01), Paasschens et al.
patent: 3790142 (1974-02-01), Goodman et al.

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