Process for extracting oleaginous seed materials particularly cottonseed with aqueous alcohol
AssigneeDravo Corporation
InventorsGeorge B. Karnofsky, Roger J. Hansotte
Life of this patent
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Abstract
There is disclosed a process for extracting oleaginous seed material consisting in part of solubles comprising carbohydrates, fatty-acids, non-oil lipids and oils with a less concentrated aqueous solution of a monohydric alcohol selective for the extraction of the solubles other than the carbohydrates and oil followed by a contact of the resulting particulate solids with a concentrated aqueous solution of a monohydric alcohol for the extraction of oil.
Claims27
In a process for forming residue meal by extracting oil from an oleaginous seed material consisting in part of components comprising carbohydrates, fatty acids, non-oil lipids and oil wherein the oil is extracted last by a concentrated aqueous solution of a monhydric alcohol, the improvement comprising first contacting said oleaginous seed material with an aqueous solution of said monohydric alcohol less concentrated than said concentrated aqueous solution thereof, and at a concentration to form a miscella by selectively extracting substantially all of said components other than said carbohydrates and oil from said oleaginous seed material with minimal extraction of said carbohydrates.
A process for extracting oil from oleaginous seed material consisting in part of components comprising carbohydrates, fatty acids, non-oil lipids and oil, which comprises:
- (a) particulating said oleaginous seed material to form extractable particles;
- (b) contacting said particles with a less concentrated aqueous solution of a monohydric alcohol to selectively extract all of said components othe than said carbohydrates and oil with minimal extraction of said carbohydrates an oil;
- (c) separating a miscella from the particles of step (b);
- (d) contacting said particles of step (c) with a concentrated aqueous solution of said monohydric alcohol at a temperature at or near the boiling point to displace said less concentrated aqueous solution of said monohydric alcohol therefrom;
- (e) separating a miscella from the particles of step (d);
- (f) contacting said particles of step (e) with a concentrated aqueous solution of said monohydric alcohol at a temperature at or near the boiling point to extract substantially all of said oil;
- (g) separating an oil-enriched miscella from the particles of step (f);
- (h) cooling said oil-enriched miscella of step (g) to separate a solvent phase from an oil phase;
- (i) returning said solvent phase to step (f);
- (j) withdrawing said oil phase from the process;
- and
- (k) desolventizing the particles resulting from step (g) to yield a residue meal including unextracted carbohydrates.
Dependencies are inferred from the claim text.