Gas and liquid contact apparatus – Contact devices – Rotating
Patent
1979-10-02
1982-05-04
Miles, Tim R.
Gas and liquid contact apparatus
Contact devices
Rotating
B01F 304
Patent
active
043281753
ABSTRACT:
Apparatus for contacting a liquid, in a tank containing a body of same, with a gas from a gas space overlying the body of liquid. A generally tubular draft member is disposed in the tank, having a cylindrical main body portion and an outwardly flared conical inlet upper section forming a liquid inlet at its upper end. Enclosing walls of the conical inlet section form an angle with the draft member central axis of from 5.degree. to 35.degree. and the conical inlet section has a vertical height of from 0.25 to 1.25 times diameter of the draft member. A rotatable axial pumping impeller is provided in the draft member for rotational vortex entrainment of gas in downwardly flowing liquid pumped through the draft member. Baffle means are positioned in the conical inlet section of the draft member to prevent bulk rotation of liquid in the tank during rotation of the impeller.
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WPCF Manual of Practice No. 5, "Aeration in Waste Water Treatment", Lancaster Press, Inc., 1971, p. 50.
Conti John A.
Roeckel Winfried
Scaccia Carl
Bresch Saul R.
Miles Tim R.
Union Carbide Corporation
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