Injectors and their use in gassing liquids

Details Injectors and their use in gassing liquids Injectors and their use in gassing liquids

B - Operations, Transporting

01

F

195/141, 362/9

B01F 3/04 (2006.01) B01F 5/04 (2006.01) C02F 3/12 (2006.01) C12M 1/04 (2006.01)

Patent

CA 1088681

Abstract of the Disclosure In an injector for the dispersion of a gas into a liquid and comprising a gas inlet, a liquid inlet, and a mixing chamber communicating with said inlets and having an inlet and an outlet, the improvement wherein the inlet of said mixing chamber is substantially round in cross-section and the outlet is substantially slit-shaped, whereby the kinetic energy of propulsion can be utilized with high efficiency to produce very fine gas bubbles. Advantageously the cross-sectional area at the outlet of the mixing chamber is about 5 to 25 times the cross-sectional area of the liquid nozzle throat, the liquid nozzle has a throat diameter d diverging to its discharge at an angle of about 5 to 10°, the mixing chamber beginning at a distance from about 1 to 3 d from the end of the inlet, the inlet of the mixing chamber being circular of a diameter of about 3 d, the mixing chamber having a length of about 5 d to 20 d, and the height of the slit being about 1 d. The in- jector is especially suited for use in treating liquid effluents and in fermentation processes.

283706

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