Distillation: processes – separatory – Adding material to distilland except water or steam per se – At least two materials
Patent
1997-09-15
1999-10-12
Manoharan, Virginia
Distillation: processes, separatory
Adding material to distilland except water or steam per se
At least two materials
203 52, 203 68, 203 69, 203 70, 203 71, 203 91, 203 94, 203 99, 203DIG19, 568751, 568761, B01D 334, C07C 3772, C07C 3774
Patent
active
059649879
ABSTRACT:
Natural cresylic acid is processed to remove neutral oil impurities by countercurrent liquid/liquid extraction using a heavy phase solvent of a mixture of glycerol and another polyhydric alcohol, preferably triethylene glycol. The light phase solvent is a light paraffinic or cycloparaffinic hydrocarbon.
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Cumming, A.P.C., "Separation of Phenols from Coal-Tar Hydrocarbons by Means of Glycerol and Aqueous Trithylene Glycol: Development of a Process", J. appl. Chem., Mar. 3, 1953, pp. 98-106.
Baker Gene G.
Duncan David H.
Kuhn Alfred K.
Maas Dana J.
Mohl Kevin M.
Dakota Gasification Company
Manoharan Virginia
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