Process for refining soybean oil
First Claim
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6. AN IMPROVED PROCESS FOR PRODUCING PURIFIED SOYBEAN OIL, WHICH COMPRISES FORMING A MISCELLA OF SOYBEAN OIL AND A HEXANE, CONTACTING THE RESULTING SOYBEAN OIL-HEXANE MISCELLA WITH A METHANOL-WATER SOLUTION AND THEREBY EXTRACTING IMPURITIES FROM SAID OIL, SEPARATING SAID METHANOL-WATER SOLUTION CONTAINING SAID EXTRACTED IMPURITIES FROM SAID MISCELLA, CONTACTING SAID MISCELLA WITH A DILUTE AQUEOUS SOLUTION OF AN ALKALI METAL HYDROXIDE AND THEREBY EXTRACTING FATTY ACIDS FROM SAID OIL, SEPARATING SAID ALKALI METAL HYDROXIDE SOLUTION CONTAINING SAID FATTY ACIDS, FROM SAID MISCELLA, SEPARATING SAID HEXANE FROM SAID SOYBEAN OIL, AND RECOVERING A PURIFIED SOYBEAN OIL AS A PRODUCT OF THE PROCESS.
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6 Claims
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6. AN IMPROVED PROCESS FOR PRODUCING PURIFIED SOYBEAN OIL, WHICH COMPRISES FORMING A MISCELLA OF SOYBEAN OIL AND A HEXANE, CONTACTING THE RESULTING SOYBEAN OIL-HEXANE MISCELLA WITH A METHANOL-WATER SOLUTION AND THEREBY EXTRACTING IMPURITIES FROM SAID OIL, SEPARATING SAID METHANOL-WATER SOLUTION CONTAINING SAID EXTRACTED IMPURITIES FROM SAID MISCELLA, CONTACTING SAID MISCELLA WITH A DILUTE AQUEOUS SOLUTION OF AN ALKALI METAL HYDROXIDE AND THEREBY EXTRACTING FATTY ACIDS FROM SAID OIL, SEPARATING SAID ALKALI METAL HYDROXIDE SOLUTION CONTAINING SAID FATTY ACIDS, FROM SAID MISCELLA, SEPARATING SAID HEXANE FROM SAID SOYBEAN OIL, AND RECOVERING A PURIFIED SOYBEAN OIL AS A PRODUCT OF THE PROCESS.
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Current AssigneeArnold L. Ayers
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Original AssigneeArnold L. Ayers
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InventorsAyers, Arnold L.
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Application NumberUS03/017,105Time in Patent Office1,216 DaysField of SearchUS Class Current554/198CPC Class CodesC11B 1/102 in counter-current; utilisa...C11B 3/06 with bases
