Distillation: processes – separatory – Adding material to distilland except water or steam per se – At least two materials
Patent
1985-09-16
1987-12-29
Bascomb, Wilbur
Distillation: processes, separatory
Adding material to distilland except water or steam per se
At least two materials
203 60, 203 61, 203 71, 568913, B01D 340, C07C 2984
Patent
active
047159332
ABSTRACT:
n-Propanol and 2-butanol cannot be separated from each other by distillation because of the proximity of their boiling points. n-Propanol can be readily separated from 2-butanol using extractive distillation in which the extractive agent is a higher boiling oxygenated organic compound or a mixture of two or more of these. Typical examples of effective agents are: methyl benzoate; benzoic acid and methyl benzoate; cinnamic acid, phthalic anhydride and methyl benzoate.
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Berg Lloyd
Vosburgh Mark G.
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