B - Operations – Transporting – 03 – D
Patent
B - Operations, Transporting
03
D
361/36
B03D 1/02 (2006.01) B01D 17/02 (2006.01) B01D 17/035 (2006.01) B03D 1/14 (2006.01) B03D 1/16 (2006.01) C02F 1/24 (2006.01)
Patent
CA 1323116
ABSTRACT A process and an apparatus are specified by which emulsions or suspensions of both different and changing composition can be separated in a particularly reliable manner. Proceeding on the principle of turbo-flotation, which is known per se, according to one embodiment, the gas is dispersed in the lower region of the vessel so that it is finely dispersed directly at the point where the emulsion is broken up or the suspension is separated, respectively, mechanically. Furthermore, the emulsion or suspension to be separated is supplied to the vessel close to the surface of the emulsion and the residue is removed at the bottom of the vessel. In this way, in continuous operation, a counter-flow between gas or gas/liquid suspension and emulsion can be achieved, thereby avoiding recontamination and re-emulsification. A strictly separated turbulence zone and a superposed flotation zone are formed. Foam carrying the flotate is formed on the surface. When the vessel is constructed so that it is closed, according to a second embodiment the foam can be forced without any mechanical means to a separating device through the effect of the rising gas, in which reliable separation is possible into solids and waste gases, and also into residual water which may be recycled. Flocculation and/or flotation chemicals can advantageously be supplied to the emulsion or suspension in the vessel in the region of the turbulence zone. In addition to a continuous process, in which several vessels are arranged in series and have a continuous flow running through them, a batch or cyclic process is also possible, in which the emulsion or suspension is left in the vessel until complete separation has taken place, and the separation of other substances may be carried out with the aid of other chemicals and/or of other gases in further vessels or a further separation stage. (Figure 2)
465942
Macrae & Co.
Ystral Gmbh
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