Apparatus and method for supercritical fluid extraction

Details Apparatus and method for supercritical fluid extraction Apparatus and method for supercritical fluid extraction

1992-07-06

1993-03-30

Sever, Frank

Chemical apparatus and process disinfecting, deodorizing, preser

Physical type apparatus

Means separating or dissolving a material constituent

210634, B01D 1100

Patent

active

051981971

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 extractments, an automatic sample changer and an automatic carteidge transfer mechanism which provide completely automated extractions.

REFERENCES:
patent: 4770780 (1988-09-01), Moses

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