US 12,004,530 B2 · Extraction cell

Abstract

An upward flow extraction method, apparatus, and extract are disclosed. The upward flow extraction method can comprise loading extraction material into an extraction cell having a bottom portion and a top portion; introducing a first aliquot of extraction medium through the bottom portion of the extraction cell; expelling gas from the extraction cell through the top portion of the extraction cell; closing the top portion of the extraction cell and increasing the pressure in the extraction cell as extraction medium flows into the bottom portion of the extraction cell; stopping the flow of extraction medium into the extraction cell; steeping the extraction material in the extraction medium under pressure to produce an extract; and introducing a second aliquot of extraction medium through the bottom portion of the extraction cell to push extract through top portion of the extraction cell.

Claims18

Dependent claims

An extraction cell for preparing an extract, the extraction cell comprising:

a bottom portion;
a top portion having a cross-sectional area;
a side wall extending between the bottom portion and the top portion;
an inlet on the bottom portion for introducing an extraction medium;
an outlet disposed on the top portion for removing the extract from the extraction cell, the outlet having an area that is between about 10% to about 100% of the cross-sectional area of the top portion of the extraction cell;
and
a filter positioned at the outlet having a mean aperture diameter between about 0.05 mm to about 0.35 mm,
wherein the extraction cell comprises a length and an average width along the length, wherein an interior aspect ratio of the length to the average width is between about 2:1 to about 4:1.

5 more elements

Dependencies are inferred from the claim text.

Extraction cell

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Extraction cell

Life of this patent

Abstract

Claims18