Method for bubble shearing

Details Method for bubble shearing Method for bubble shearing

C - Chemistry, Metallurgy

02

F

362/25

C02F 3/20 (2006.01)

Patent

CA 1067220

ABSTRACT OF THE DISCLOSURE Method and apparatus for bubble shearing are disclosed in which nascent bubbles are formed by flowing gas through the very small capillary openings (no larger than about 100 microns in diameter) of a gas diffusing surface into a moving liquid that shears the nascent bubbles off as it moves past the capillary openings. Two main hydrodynamic features are disclosed for both the method and the apparatus: 1. a partially developed laminar boundary layer growing in thickness in the downstream direction is established above a substantial number if not all of the capillary openings at which nascent bubbles are formed and sheared off. These openings are preferably located in close proximity to the leading edge of the gas diffusing surface. 2. The liquid over all capillary openings that are present in the gas diffusing surface is substantially free of any type of flow other than partially or fully developed substantially parallel laminar flow. In the method, the partially developed laminar boundary layer extends over at least one-quarter of the capillary openings in the gas diffusing surface.

317525

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