Liquid purification or separation – Flow – fluid pressure or material level – responsive – Maintaining stream pressure or flow
Patent
1996-01-18
1997-06-10
Therkorn, Ernest G.
Liquid purification or separation
Flow, fluid pressure or material level, responsive
Maintaining stream pressure or flow
210149, 210181, 210241, 210511, 210634, 422261, 422277, B01D 1100
Patent
active
056372094
ABSTRACT:
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.
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patent: 4898673 (1990-02-01), Rice
patent: 5013443 (1991-05-01), Higashidate
patent: 5087360 (1992-02-01), Wright
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patent: 5198197 (1993-03-01), Clay
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patent: 5549819 (1996-08-01), Nickerson
Robins William H.
Woodcock Leslie J.
Wright Bob W.
Zemanian Thomas S.
Battelle (Memorial Institute)
Therkorn Ernest G.
Zimmerman Paul W.
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