Patent ID: 6092667
Filing Date: 2000-07-25
Classification: B01F,B03D,Y10S

Abstract:
A method of aerating a liquid comprising the steps of:providing a column having a receptacle located within an upper zone of the column and having an open lower end;locating the lower end of the column in a vessel;introducing liquid under pressure into the upper zone of the column in the form of a jet of liquid;permitting gas to be entrained by the jet of liquid through an opening leading into the column;directing the jet of liquid into the receptacle so that the receptacle obstructs the path of the jet of liquid to form a zone of turbulence in which bubbles are formed in the liquid to create foam or froth sufficient to overflow from the receptacle into the column, thereby forming a foam or froth bed in the column;permitting the foam or froth to issue from the open lower end of the column and to rise upwardly in the liquid in the vessel to form a foam or froth liquid interface and to form a foam or froth layer above the interface; andremoving the foam or froth.