Liquid purification or separation – With means to add treating material – Chromatography
Patent
1995-07-12
1997-02-11
Therkorn, Ernest G.
Liquid purification or separation
With means to add treating material
Chromatography
210511, 210634, 210656, 422256, 422260, B01D 1100, B01D 1508
Patent
active
056017073
ABSTRACT:
An apparatus for supercritical fluid extraction incorporates a removable extraction cartridge which in operation has insignificant pressure difference between its inside and outside walls. Because of the low pressure difference, the extraction cartridge need not have the strength to withstand significant pressure and can be made out of molded plastic for disposable use as well as stainless steel and/or machined plastic for reusability. The extraction cartridge can be removed and opened for sample access without the use of tools. The outside of the cartridge can be purged after it is installed in a heated high pressure vessel to remove contamination from its exterior. In one embodiment, the extractor includes a fraction collector for extractants, an automatic sample changer and an automatic cartridge transfer mechanism which provide completely automated extractions.
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Allington Robert W.
Clay Dale L.
Jameson Daniel G.
Winter Robin R.
Carney Vincent L.
Isco, Inc.
Therkorn Ernest G.
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