Process for the separation of high boiling oxygenated compounds

Distillation: processes – separatory – Adding material to distilland except water or steam per se – At least two materials

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203 65, 568366, 568410, 568749, 568835, 568913, B01D 340, C07C 3780

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active

044154097

ABSTRACT:
An extractive distillation process is provided for the separation of phenol and/or cresol from mixtures with high boiling oxygenated compounds such as alkanols, alkanones, cycloalkanones, cycloalkanols, aryl alcohols, aryl ketones or mixtures thereof that have a boiling point of at least about 175.degree. C. The process involves distilling the phenol and/or cresol-high boiling oxygenated compound mixture in the presence of at least one extractive solvent comprising a substituted phenol and/or substituted cresol that has a boiling point between about 195.degree. C. and about 400.degree. C.

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