Gas and liquid contact apparatus – Contact devices – Rotating
Patent
1985-12-30
1987-02-17
Chiesa, Richard L.
Gas and liquid contact apparatus
Contact devices
Rotating
209170, 210703, 210219, 2102212, 261DIG7, 366102, 422231, B01F 304
Patent
active
046438521
ABSTRACT:
The present invention provides an apparatus for generating gas bubbles in a liquid. The bubbles, which are uniform in size and on the order of approximately 100 micrometers in diameter or less, enhance the efficiency of gas transfer to the liquid. The apparatus includes at least one rotatable member, in the shape of a disc or ring, which is wettable by the liquid and rotatable therein at an edge velocity of at least 70 feet per second. The upper surface of the rotatable member is parallel to, and spaced from, a stationary plate to form a shear zone. Gas, or some other fluid, is supplied proximate the upper surface of the rotatable circular member to form the bubbles. Optimized relationships between the radius of the disc or ring and its speed of rotation are disclosed to enhance the efficiency of operation of the apparatus. The apparatus can be used in various applications in which it is desirable to disperse a gas or other fluid into a liquid as, for example, aeration to promote the decomposition of biological waste products or the carbonation of soft drinks.
REFERENCES:
patent: 2515538 (1950-07-01), Wall
patent: 2996287 (1961-08-01), Audran
patent: 3650513 (1972-03-01), Werner
patent: 3953552 (1976-04-01), Strauss
patent: 4066722 (1978-01-01), Pietruszewski et al.
patent: 4228112 (1980-10-01), Hise
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