Back to results
US 4,066,722 AGranted
Apparatus for sparging gas into liquid
AssigneeUnion Carbide Corporation
InventorsJohn Joseph Pietruszewski, Carl Scaccia, Ralph James Wagner
Life of this patent
Estimating the term…
Abstract
A rotatable bell is provided having a generally downwardly diverging shape about a central vertical axis, with the outer wall surface of the bell including a circumferentially extending jet flow surface portion with a plurality of gas flow wall openings circumferentially disposed around the base part thereof. Liquid is flowed downwardly over the jet flow surface portion of the wall from the upper part to the base part thereof to provide a high shear jet flow of liquid into which gas is injected for gas-liquid contacting and bulk mixing thereof.
Claims14
Apparatus for sparging gas into liquid comprising:
- a. A vertically oriented rotatable shaft;
- b. A hollow rotatable bell having a generally downwardly diverging symmetrical shape about a central vertical axis, connected to the lower end of the shaft for rotation therewith, with the outer wall surface of the bell including a circumferentially extending jet flow surface portion, with a plurality of circumferentially distributed gas flow wall openings in the base part of the jet flow surface wall portion, and an imperforate wall surface sealing segment joined to the base part of the jet flow surface wall portion to form a liquid seal for the gas flow wall openings, the jet flow surface portion of the wall being imperforate along its upper part and having a surface profile of continuous positive curvature from the base part thereof containing said gas flow wall openings to the upper part thereof with a base angle .beta. of between about 0.degree. and about 60.degree. and an apex angle .alpha. of between about 0.degree. and about 65.degree. wherein .beta. is the angle formed in a radial plane between a tangent to the base part surface portion and a horizontal radius line extending from the bell axis to the point of tangency and .alpha. is the angle formed in a radial plane between a tangent to the upper part surface portion and the bell axis;
- c. Axial flow pumping means disposed about the rotatable bell aligned for flowing liquid downwardly over the jet flow surface portion of the bell wall from the upper part to the base part thereof, to provide a high shear jet flow of liquid over the gas flow wall openings;
- and
- d. Means for introducing pressurized gas into the interior of the rotatable bell for discharge therefrom through the gas flow wall openings into the high shear jet flow of liquid, to provide a localized dispersion of the discharged gas in the jet flow liquid for gas-liquid contacting and bulk mixing thereof.
2 more elements
Apparatus for sparging gas into liquid comprising:
- a. A vertically oriented rotatable shaft;
- b. A hollow rotatable bell having a generally downwardly diverging symmetrical conical shape about a central vertical axis, connected to the lower end of the shaft for rotation therewith, with the outer wall surface of the bell including a circumferentially extending jet flow surface portion, with a plurality of circumferentially distributed gas flow wall openings in the base part of the jet flow surface wall portion, and an imperforate wall surface sealing segment comprising a cylindrical wall member depending vertically downwardly from the base part of the jet flow surface wall portion and open at the bottom to form a liquid seal for the gas flow wall openings, the jet flow surface portion of the wall having a linear surface profile from the base part thereof containing said gas flow wall openings to the upper part thereof with a base angle .beta. of between about 30.degree. and about 60.degree. and an apex angle .alpha. of between about 30.degree. and about 60.degree. wherein .beta. is the angle formed in a radial plane between a tangent to the base part surface portion and a horizontal radius line extending from the bell axis to the point of tangency and .alpha. is the angle formed in a radial plane between a tangent to the upper part surface portion and the bell axis;
- c. An axial flow pumping impeller disposed above the rotatable bell aligned for flowing liquid downwardly over the jet flow surface portion of the bell wall from the upper part to the base part thereof, to provide a high shear jet flow of liquid over the gas flow wall openings;
- and
- d. Means for introducing pressurized gas into the interior of the rotatable bell comprising a gas flow conduit joined at one end to pressurized gas supply means, with its other end disposed proximate the open bottom of the rotatable bell for emitting gas into the interior thereof, for discharge therefrom through the gas flow wall openings into the high shear jet flow of liquid, to provide a localized dispersion of the discharged gas in the jet flow liquid for gas-liquid contacting and bulk mixing thereof.
2 more elements
Dependencies are inferred from the claim text.