Extraction of particulate materials
AssigneeThe University of Toronto Innovations Foundation
InventorsLevente L. Diosady, Leon J. Rubin, Csaba G. Tar
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Abstract
A method of extracting components from particulate materials is disclosed. The method includes the steps of mixing the particles with a first extraction solvent to provide a slurry. The slurry is then passed through an extraction zone. A second extraction solvent is passed countercurrently to the slurry through the extraction zone. The second solvent has a different density from the first solvent and is substantially immiscible with the first solvent. This process is particularly beneficial for use in the extraction of ground oil-seed particles.
Claims20
A method of extracting components from solid particulate material comprising the steps of:
- mixing said particulate material with a first extraction solvent to provide a slurry;
- passing said slurry through an extraction zone;
- passing a second extraction solvent countercurrently to said slurry through said extraction zone, said second solvent having a different density than said first solvent and being substantially immiscible in said first solvent;
- wherein (i) said solid particulate material is an oil bearing seed selected from the group comprising rapeseed, canola, soy, sunflower, cottonseed, peanut and mustard seed;
- and (ii) one extraction solvent is non-polar and the other extraction solvent is polar.
The method of claim 2 wherein said seed particles are previously ground, pre-pressed, flaked, cracked or broken.
Dependencies are inferred from the claim text.