Apparatus and method for the separation of a viscous mixture
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United States of America Patent
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Jul 20, 1993
Grant Date -
N/A
app pub date -
Mar 26, 1991
filing date -
Mar 31, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for the separation of viscous mixtures, comprising charging the mixture with solvent to form a dispersion before extraction to improve the extraction over a simple solvent extraction. The mixture to be treated is charged with solvent before the extraction and is then sprayed into the extraction column where it is dispersed. This treatment provides extraction of highly viscous, pasty materials. The charging with solvent can take place until the mixture is saturated with the solvent, and favorable temperature and pressure conditions for charging may be provided in a charging column that is separate from the extraction column.
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