Patent ID: 6454103
Filing Date: 2002-09-24
Classification: B01D

Abstract:
Multiphase extractor comprising an extraction chamber, a re-extraction chamber and an intermediate washing chamber, each of said chambers having a bottom section and a top section, and whereinsaid extraction chamber has an inlet for the supply of a donor phase, said inlet being adapted to disperse a donor phase and discharge it as a dispersion into said extraction chamber, a drain at the bottom section of the extraction chamber, a first connecting channel which connects said extraction chamber to said washing chamber and a second connecting channel which connects said extraction chamber to said re-extraction chamber, said first and second connecting channels being connected to said extraction chamber at a level which is above the level of said drain at the bottom section of said extraction chamber, said intermediate washing chamber has an inlet for the supply of a washing phase, said inlet being adapted to disperse a washing phase and discharge it into said washing chamber, a drain at the bottom section of the washing chamber, a third connecting channel which connects said washing chamber to said re-extraction chamber, said third connecting channel being connected to said washing channel at a level which is above the level of said drain at the bottom section of the washing chamber said re-extraction chamber has an inlet for the supply of an acceptor phase, said inlet being adapted to disperse an acceptor phase and discharge it as a dispersion into said re-extraction chamber, a drain at the bottom section of the re-extraction chamber and wherein said second connecting channel which connects said re-extraction chamber and said extraction channel is connected to said re-extraction chamber at a level which is above the level of said drain at the bottom section of said re-extraction chamber.