Process for degumming oils
First Claim
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1. A process for degumming oil, comprising:
- adding an acid to an oil to form an acid-oil mixture;
mixing an aqueous base with the acid-oil mixture at high shear with an agitation mixer, the mixing being at a shear rate of greater than 15,000 s−
1 to form a neutralized oil mixture;
adding 0.2 to 4 weight percent of water to the neutralized oil mixture, the water measured by the total weight of the oil in the neutralized oil mixture;
mixing the water added neutralized oil mixture in an agitation mixer at a transitional state flow measuring a Reynolds number (NRe) in the range of from 10 to 1000 to disperse the water in neutralized oil mixture;
separating a portion of the water in the neutralized oil mixture to obtain a degummed oil.
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Abstract
A multi-stage agitation system is used for degumming vegetable oil to increase yield and reduce phosphatides. A high-shear mixing phase, that can include multiple stages, subjects an oil mixed with acid and base to a shear rate of greater than 15,000 s−1 to form a neutralized oil mixture. A low-shear mixing phase is further used to disperse water into the neutralized oil mixture. A separation step can be used to remove the phosphatides from the treated oil to form a degummed oil product.
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Citations
20 Claims
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1. A process for degumming oil, comprising:
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adding an acid to an oil to form an acid-oil mixture; mixing an aqueous base with the acid-oil mixture at high shear with an agitation mixer, the mixing being at a shear rate of greater than 15,000 s−
1 to form a neutralized oil mixture;adding 0.2 to 4 weight percent of water to the neutralized oil mixture, the water measured by the total weight of the oil in the neutralized oil mixture; mixing the water added neutralized oil mixture in an agitation mixer at a transitional state flow measuring a Reynolds number (NRe) in the range of from 10 to 1000 to disperse the water in neutralized oil mixture; separating a portion of the water in the neutralized oil mixture to obtain a degummed oil. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A process for the degumming oil, comprising:
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adding an acid to an oil to form an acid-oil mixture; mixing an aqueous base with the acid-oil mixture, and subjecting the acid-oil mixture containing the aqueous base to a multi-stage agitation to form a neutralized oil mixture, wherein each stage of the multi-stage agitation mixes the aqueous base and the acid-oil mixture at a shear rate of greater than 15,000 s−
1;adding 0.2 to 4 weight percent of water to the neutralized oil mixture, the water measured by the total weight of the oil in the neutralized oil mixture; mixing the neutralized oil mixture in an agitation mixer at a transitional state flow measuring a Reynolds number (NRe) in the range of from 10 to 1000 to disperse the water in neutralized oil mixture; separating a portion of the water in the neutralized oil mixture to obtain a degummed oil. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification