Extractor
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United States of America Patent
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-
Jun 14, 1988
Grant Date -
N/A
app pub date -
May 6, 1985
filing date -
May 6, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention is an improved extractor (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 which 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).
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