Supercritical fluid extraction restrictor and collection system

Details Supercritical fluid extraction restrictor and collection system Supercritical fluid extraction restrictor and collection system

C - Chemistry, Metallurgy

07

C

C07C 7/10 (2006.01) B01D 11/02 (2006.01) G01N 1/34 (2006.01) G01N 30/06 (2006.01) B01L 5/00 (2006.01) G01N 1/00 (2006.01) G01N 30/02 (2006.01)

Patent

CA 2093220

2093220 9206058 PCTABS00011 A system of recovering at least one low molecular weight chemical compound carried in the high pressure effluent fluid stream from supercritical fluid extraction. This effluent stream flows through a heated capillary conduit (52) preferably including a coiled segment in a heat conductive bloc (56). A flow restrictor in the conduit restricts flow and thereby slowly reduces pressure to exit a port (52d) into a region free of liquid in a decompression zone (70) thereby substantially decompressing said high pressure effluent fluid stream. Then the stream is passed into a liquid solvent zone (74) containing a liquid solvent for a low molecular weight chemical compound. Then, the low molecular weight chemical compound in said liquid solvent is trapped and detected. When the effluent fluid stream contains at least one high molecular weight compound, it is deposited on a surface in contact with said gas decompression zone, removed, and detected.

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