Dispersed air flotation machine
AssigneeEnvirotech Corporation
InventorsVernon R. Degner, William V. Colbert
Life of this patent
Estimating the term…
Abstract
A machine for dispersing gas bubbles in a liquid includes a horizontal series of adjacent flotation cells without baffles or mechanical gas distribution means. In each cell, an ejection device is mounted to expel a two-phase gas-liquid mixture into the cell. Liquid is pumped into the ejection devices so that the density and energy of the mixture at the point of ejection falls within Region I In FIG. 3.
Claims15
A dispersed gas flotation machine wherein hydraulic effects are utilized to disperse gas bubbles throughout contained liquid comprising:
- a. A housing and a plurality of flotation cells, mounted adjacent one another in a horizontal series in said housing and each of said cells containing a liquid body with a free surface;
- b. means connected to said housing for introducing liquid for processing thereinto;
- c. means for transferring liquid from cell to cell;
- d. removal means for removing processed liquid from said housing;
- e. means for removing froth from the free surface of the liquid in said housing;
- f. a plurality of fluid ejection devices mounted one in each of said flotation cells in a position to expel a mixed fluid into the liquid contained in said cell, each said fluid ejection device including:
- (i) a hollow tubular expansion chamber member which has an open end through which the mixed fluid is ejected into the liquid in said cell and an opposite end;
- (ii) a liquid-carrying pipe sealingly connected in communication with said opposite end of said expansion chamber member;
- (iii) gas introduction means for introducing gas into the interior of said expansion chamber member for mixing with the liquid therein;
- and
- g. pump means connected to said removal means and to said liquid-carrying pipes to pump less than all of the processed liquid into said fluid ejection devices, whereby the processed liquid mixes with gas from said gas introduction means to form the mixed fluid which is ejected into the liquid body in each said cell of said plurality of cells to form a dispersion of gas bubbles in each said cell.
A dispersed gas flotation machine wherein hydraulic effects are utilized to disperse gas bubbles throughout contained liquid comprising:
- a. a housing and a plurality of flotation cells, mounted adjacent one another in a horizontal series in said housing and each of said cells containing a liquid body with a free surface;
- b. means connected to said housing for introducing liquid for processing thereinto;
- c. means for transferring liquid from cell to cell;
- d. removal means for removing processed liquid from said housing;
- e. means for removing froth from the free surface of the liquid in said housing;
- f. a plurality of fluid ejection devices mounted one in each of said flotation cells in a position to expel a mixed fluid into the liquid contained in said cell, each said fluid ejection device including:
- (i) a hollow tubular expansion chamber member which has an open end through which the mixed fluid is ejected into the liquid in said cell and an opposite end;
- (ii) a liquid-carrying pipe sealingly connected in communication with said opposite end of said expansion chamber member;
- (iii) gas introduction means for introducing gas into the interior of said expansion chamber member for mixing with the liquid therein;
- g. a manifold coupled in fluid-flow communication with said liquid-carrying pipes to convey processed liquid to said pipes;
- and
- h. a pump connected to said removal means and to said manifold to pump less than all of the processed liquid through said manifold to said fluid ejection devices, so that the processed liquid in said fluid ejection devices mixes with gas from said gas introduction means to form the mixed fluid which is ejected into the liquid body in each said cell to form a dispersion of gas bubbles in each said cell.
Dependencies are inferred from the claim text.