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Refining of vegetable and animal oils

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1. IN THE PROCESS OF REFINING VEGATABLE AND ANIMAL OILS, THE IMPROVEMENT WHICH COMPRISES ADDING A SMALL QUANTITY OF STRONG, COLD LYE TO THE OIL AT LOW TEMPERATURE, SUBJECTING THE MIXTURE TO VIOLENT AGITATION, MAINTAINING THE LYE IN THOROUGHLY DISPERSED CONTACT WITH THE OIL FOR A PERIOD SUFFICIENT TO COMPLETE THE REACTION OF THE LYE WITH THE COLOR BODIES IN THE OIL AND AT A LOW TEMPERATURE OF ABOUT 70* TO 90* F., ADDING WATER TO THE MIXTURE COMMENCING AT A TIME WHEN THE MIXTURE IS STILL AT SAID LOW TEMPERATURE TO DILUTE THE LYE, HEATING THE MIXTURE RAPIDLY TO THE OPTIMUM TEMPERATURE FOR CENTRIFUGAL SEPARATION, AND CENTRIFUGING THE MIXTURE TO SEPARATE THE OIL FROM THE PRECIPITATED IMPURITIES AND WATER.
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