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Title: Field-portable supercritical CO.sub.2 extractor

The present invention is an apparatus for extracting organic compounds from solid materials. A generator vessel has a removable closure for receiving a solid or liquid solvent which is heated with a resistive heating element to a gaseous or supercritical phase. The removable closure is unencumbered because the side wall is penetrated with an outlet for the gaseous or supercritical solvent. The generator vessel further has a pressure transducer that provides an electronic signal related to pressure of the gaseous or supercritical solvent. The apparatus of the present invention further includes at least one extraction cell having a top and a bottom and a wall extending therebetween, wherein the bottom is sealably penetrated by an inlet for gaseous or supercritical solvent received through a manifold connected to the outlet, the top having an easy-open removable closure cap, and the wall having an outlet port. Finally, a permeable sample cartridge is included for holding the solid materials and to provide radial-flow of the extraction fluid, which is placed within the extraction cell.
Inventors:
 [1];  [1];  [1];  [2]
  1. (Richland, WA)
  2. (Benton City, WA)
Issue Date:
OSTI Identifier:
870987
Assignee:
Battelle Memorial Institute (Richland, WI) PNNL
Patent Number(s):
US 5637209
Contract Number:
AC06-76RL01830
Research Org:
Pacific Northwest National Laboratory (PNNL), Richland, WA
Country of Publication:
United States
Language:
English
Subject:
field-portable; supercritical; extractor; apparatus; extracting; organic; compounds; solid; materials; generator; vessel; removable; closure; receiving; liquid; solvent; heated; resistive; heating; element; gaseous; phase; unencumbered; wall; penetrated; outlet; pressure; transducer; provides; electronic; signal; related; extraction; cell; top; bottom; extending; therebetween; sealably; inlet; received; manifold; connected; easy-open; cap; finally; permeable; sample; cartridge; included; holding; provide; radial-flow; fluid; placed; resistive heating; solid materials; organic compound; heating element; organic compounds; solid material; liquid solvent; pressure transducer; electronic signal; supercritical solvent; closure cap; critical solvent; provide radial; /210/422/

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