Energy efficient phase transfer/dispersion systems and...

B - Operations – Transporting – 01 – J

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165/18, 361/36

B01J 10/00 (2006.01) B01F 3/04 (2006.01) B03D 1/14 (2006.01) C02F 3/20 (2006.01)

Patent

CA 1206865

S P E C I F I C A T I O N Title: ENERGY EFFICIENT PHASE TRANSFER/ DISPERSION SYSTEMS AND METHODS FOR USING THE SAME Inventor: Evan E. Koslow ABSTRACT OF THE DISCLOSURE The present invention provides an apparatus for gener- ating gas bubbles in a liquid medium. The bubbles, which are uni- form in size and of the order of magnitude of approximately 100 micrometers in diameter or less, enhance the efficiency of gas transfer to the medium. The apparatus includes at least one ro- tatable member, in the shape of a disc or ring, which is rotated in a liquid medium at an edge velocity of at least 80 feet per second. Preferably, the rotatable disc is of a diameter of no more than 12 inches to reduce drag. The ring may be larger because its open center inherently reduces drag. A source of gas or some other fluid phase is provided proximate to the rotatable circular members to form the bubbles. Optimized relationships between the radius of the disc or ring and its speed of rotation are established and utilized to enhance the efficiency of operation of the apparatus. The phase dispersion apparatus can be used in various applications in which it is desirable to disperse a gas or fluid phase into a liquid as for example, methods of aeration to promote the decompo- sition of biological waste products or the carbonation of soft drinks.

399910

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