B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
23/363, 23/409
B01D 11/04 (2006.01)
Patent
CA 1226419
LIQUID-LIQUID EXTRACTOR Abstract of the Disclosure An apparatus is provided that is useful for effecting liquid-liquid extraction by contacting a first liquid medium with a substantially immiscible heavier second liquid medium. The apparatus includes either a single mixer-settler unit or two or more such mixer-settler units in series. Each mixer-settler unit includes a vertically extending settling tank having a top and a bottom with an outlet for the first liquid medium near the top and an outlet for the second liquid medium near the bottom. An elongated extraction column extends generally vertically upwardly through the settling tank bottom. The extraction column is open at its top with the top of the extraction column below the top of the settling tank. A diverter surrounds and extends downwardly along a top portion of the extraction column. The diverter has a closed top and an open bottom with an annulus being between the diverter and the portion the extraction column surrounded by the diverter. Means are provided in liquid communication with the extraction column for mixing the first and second liquid mediums together to form a dispersion of droplets of one of the liquid mediums in the other liquid medium and for pumping the liquid mediums through the apparatus toward the settling tank outlets. The dispersion flows from the pumping and mixing means upwardly through the extraction column and out its top. The dispersion then flows downwardly from the top of the extraction column through the annulus between the diverter and extraction column and exits the open bottom of the diverter into the settling tank.
489896
Galik George M.
Gowling Lafleur Henderson Llp
LandOfFree
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