Separation of t-amyl alcohol from isobutanol by extractive disti

Details Separation of t-amyl alcohol from isobutanol by extractive disti Separation of t-amyl alcohol from isobutanol by extractive disti

1987-03-17

1987-09-15

Bascomb, Wilbur

Distillation: processes, separatory

Adding material to distilland except water or steam per se

At least two materials

203 57, 203 60, 203 61, 568913, B01D 340, C07C 2984

Patent

active

046937889

ABSTRACT:
t-Amyl alcohol and isobutanol cannot be separated from each other by distillation because of the proximity of their boiling points. t-Amyl alcohol can be readily separated from isobutanol by using extractive distillation in which the extractive agent is a higher boiling organic compound or a mixture of two or more of these. Typical examples of effective agents are: dimethylformamide; N,N-dimethylacetamide; N,N-dimethylacetamide and dimethylsulfoxide; dimethylformamide, N,N-dimethylacetamide and phthalic anhydride.

REFERENCES:
patent: 1862706 (1932-06-01), Ricard et al.
patent: 2483246 (1949-09-01), Stribley
patent: 2551584 (1951-05-01), Carlson et al.
patent: 2559519 (1951-07-01), Smith et al.
patent: 2570205 (1951-10-01), Carlson et al.
patent: 2595805 (1952-05-01), Morrell et al.
patent: 4366032 (1982-12-01), Mikitenko et al.

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