Organic compounds -- part of the class 532-570 series – Organic compounds – Fatty compounds having an acid moiety which contains the...
Patent
1999-01-14
2000-08-29
Carr, Deborah D.
Organic compounds -- part of the class 532-570 series
Organic compounds
Fatty compounds having an acid moiety which contains the...
584 8, 584 12, C07C 100
Patent
active
061111198
ABSTRACT:
A process for recovering oil from oil-bearing food products includes storing the organic solvent vapor used as the extracting medium in a vapor recovery tank between extraction phases. After a liquid organic solvent, such as propane, is used to extract oil from the oil-bearing food products, the solvent is vaporized, and at least some of the solvent remaining on the defatted food solids is recovered, for example by opening a valve leading to a vapor recovery tank which has a pressure lower than the pressure of the extraction vessel. More preferably, at least one vacuum tank can be used to increase the percentage of organic solvent vapor delivered to the tank or vessel to which the vapor is being introduced. Preferably, several solvent or miscella tanks, for storing substantially pure solvent and solvent of varying oil concentration, are used during an extraction phases. By using several such tanks, solvent of decreasing oil concentration can be sequentially used as the extracting medium during a single extraction phase. Even more preferably, two or more extraction tanks are used sequentially such that while one tank is undergoing an extraction phase, the defatted food solids of another tank are being replaced with fresh, oil-bearing food solids. With or without this configuration, the miscella containing the highest concentration of oil can be continuously conveyed to a distillation unit at which this miscella is separated into substantially pure liquid organic solvent and oil product. Typical applications include removing and separating the oil from food products, such as removing cocoa butter from cocoa powder.
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Carr Deborah D.
CocoTech, Inc.
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