Process for the extraction of organic components from solid mate

Details Process for the extraction of organic components from solid mate Process for the extraction of organic components from solid mate

1988-02-26

1991-05-07

Millin, V.

Tobacco

Tobacco treatment

Extraction of component, other than moisture, by contact...

131298, 4236585, A24B 1524, A24B 1526

Patent

active

050128272

ABSTRACT:
In processes for high pressure extraction, a gaseous solvent under high pressure is conducted through an extractor filled with solid material and in this process takes on organic components from the solid materials. These are subsequently separated in a separator and the solvent is again delivered to the extractor. In particular, when gas mixtures having a reduced solvating power are used as solvent to increase the selectivity of the components to be dissolved out, high gas throughputs become necessary to produce a certain amount of product. In order to reduce the high gas throughputs, the solid materials are soaked with a gaseous solvent under high pressure without gas extraction before the circulation process begins. The solvent composition as well as the soaking conditions may deviate from the extraction conditions. In this process, prior to the extraction stage, the solid material in the extractor is soaked with a gaseous solvent under high pressure without the occurrence of a gas flow.

REFERENCES:
patent: 4153063 (1979-05-01), Roselius et al.
patent: 4506682 (1985-03-01), Muller
patent: 4561452 (1985-12-01), Gahrs
patent: 4714617 (1987-12-01), Gahrs
patent: 4727889 (1988-03-01), Niven et al.

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