Purufication of crude glycerine
First Claim
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1. PROCESS FOR PURIFICATION OF GLYCERINE COMPRISING FORMING IN A BODY OF CRUDE GLYCERINE HYDROGEN AND MATERIAL OF THE CLASS CONSISTING OF THE SULFATES OF ZINC AND IRON AND MIXTURES THEREOF, THE WEIGHT OF THE METAL CONTENT OF SAID MATERIAL SO FORMED BEING FROM 1/10% TO 1% OF THE WEIGHT OF THE GLYCERINE, NEUTRALIZING THE RESULTING MIXTURE TO A PH FROM 7.5 TO 10.0 AND THEN FILTERING OFF THE SOLIDS AND DISTILLING THE FILTRATE AT PH VALUES BETWEEN 7.5 TO 10.0 SAID CRUDE GLYCERINE INITIALLY CONTAINING AT LEAST 75% GLYCEROL.
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1 Claim
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1. PROCESS FOR PURIFICATION OF GLYCERINE COMPRISING FORMING IN A BODY OF CRUDE GLYCERINE HYDROGEN AND MATERIAL OF THE CLASS CONSISTING OF THE SULFATES OF ZINC AND IRON AND MIXTURES THEREOF, THE WEIGHT OF THE METAL CONTENT OF SAID MATERIAL SO FORMED BEING FROM 1/10% TO 1% OF THE WEIGHT OF THE GLYCERINE, NEUTRALIZING THE RESULTING MIXTURE TO A PH FROM 7.5 TO 10.0 AND THEN FILTERING OFF THE SOLIDS AND DISTILLING THE FILTRATE AT PH VALUES BETWEEN 7.5 TO 10.0 SAID CRUDE GLYCERINE INITIALLY CONTAINING AT LEAST 75% GLYCEROL.
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Current AssigneeHarold S. Halbedel
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Original AssigneeHarold S. Halbedel
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InventorsHalbedel, Harold S.
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Application NumberUS03/028,725Time in Patent Office703 DaysField of SearchUS Class Current568/869CPC Class CodesC11D 19/00 Recovery of glycerol from a...
