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US 3,943,155 AGranted
Simultaneous refining and dewaxing of crude vegetable oil
AssigneeThe Procter & Gamble Company
InventorHerbert Thomas Young
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Abstract
A process for refining and dewaxing crude vegetable oils using only one separation step which removes both the hydrophilic and waxy components from the crude oil. An alkali refining/dewaxing treatment is employed on crude oil at a temperature of from about 15.degree.F to about 45.degree.F.
Claims11
A process for simultaneously removing the hydrophilic and waxy components from crude vegetable oil comprising the steps of:
- a. gently agitating a crude vegetable oil at a temperature of from about 15.degree.F to about 45.degree.F;
- b. contacting the agitated crude vegetable oil with at least one equivalent of aqueous alkali per mole of free fatty acid present in the crude vegetable oil while maintaining the temperature of the mixture of vegetable oil and aqueous alkali in the range of from about 15.degree.F to about 45.degree.F, thereby to form an emulsion of hydrophilic and waxy components;
- c. mixing a phosphoric acid solution in an amount of from about 0.05 to about 0.2 percent by weight of said crude vegetable oil with said mixture of vegetable oil and aqueous alkali, thereby to break said emulsion into a two-phase system;
- and
- d. separating the oil phase from the aqueous phase of said two-phase system.
2 more elements
Dependencies are inferred from the claim text.