High-pressure azeotropic distillation for the manufacture of anh

Details High-pressure azeotropic distillation for the manufacture of anh High-pressure azeotropic distillation for the manufacture of anh

1976-10-22

1979-07-17

Bascomb, Jr., Wilbur L.

Distillation: processes, separatory

Distilling to separate or remove only water

From organic compound

203 19, 203 26, 203 68, 203 70, 203 91, 568913, B01D 336, C07C 2928, C07C 3108, C07C 3110

Patent

active

041614291

ABSTRACT:
A unique combination of specially chosen entrainers, e.g., pentanes and cyclohexane, and high-pressure azeotropic distillation conditions, e.g., 100-200 psig., provides an economically efficient separation of a C.sub.2 -C.sub.5 alkyl alcohol, e.g., isopropanol, from its aqueous mixture; and also results in the production of a useable steam having a sufficient pressure, e.g., from 10 psig. to 30 psig. Preferably, said azeotropic distillation is conducted in the substantial absence of oxygen, e.g., less than 1 wppm.

REFERENCES:
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Technique of Organic Chemistry, vol. IV, Distillation - Weissberger, 1965 (pp. 761-763).

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