Separation of ethanol from t-butanol by extractive distillation

Details Separation of ethanol from t-butanol by extractive distillation Separation of ethanol from t-butanol by extractive distillation

1985-10-07

1988-03-22

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 60, 203 61, 568913, B01D 340, C07C 2984

Patent

active

047326530

ABSTRACT:
Ethanol and t-butanol cannot be separated from each other by distillation because of the proximity of their boiling points. Ethanol can be readily separated from t-butanol by 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; benzyl benzoate and benzoic acid; methyl salicylate, hexahydrophthalic anhydride and salicylic acid.

REFERENCES:
patent: 2551584 (1951-05-01), Carlson et al.
patent: 2552412 (1951-05-01), Drout et al.
patent: 2559519 (1951-07-01), Smith et al.
patent: 2559520 (1951-07-01), Smith et al.
patent: 2570205 (1951-10-01), Carlson et al.
patent: 2575243 (1951-11-01), Carlson et al.
patent: 2591712 (1952-04-01), Morrell et al.
patent: 2591713 (1952-04-01), Morrell et al.
patent: 2706707 (1955-04-01), Morrell et al.

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