Caffeine recovery from supercritical carbon dioxide
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United States of America Patent
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Feb 26, 1991
Grant Date -
N/A
app pub date -
Aug 5, 1988
filing date -
Aug 5, 1988
priority date (Note) -
Expired
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Abstract
A process and apparatus for caffeine recovery from supercritical carbon dioxide is disclosed. The process involves countercurrent extraction of caffeine from supercritical carbon dioxide with water at pressures in excess of 1,000 p.s.i. in an unpacked extraction column. The apparatus includes an unpacked extraction vessel having a distributor therein for distributing water throughout substantially the entire cross-sectional area of the vessel.
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