B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
23/365, 23/414
B01D 11/02 (2006.01)
Patent
CA 1253672
FAX P. 17 of 18 Abstract The present invention is an improved exbractor (10) for removing a liquid from a solid carrier medium in which the liquid is entrained. The extraction process is accomplished by utilizing both percolation and immersion removal methods. The extractor (10) includes a plurality of pools (12, 12') through the solid entraining the liquid therein is moved in a direction counter-flow to that in which a solvent passes through the extractor (10). Percolation removal is effected at the overflow (48, 48') of each pool (12, 12') as solvent washes through the solids being processed. Immersion is effected at the lower end of a sloped floor (22, 22') of each pool (12, 12') where the solids are soaked in the solvent. A final percolation bath (14) can be provided as a last stage of the extractor (10).
508450
Crown Iron Works Company
Gowling Lafleur Henderson Llp
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