Process for the preparation of ethanol

Details Process for the preparation of ethanol Process for the preparation of ethanol

1981-06-11

1983-07-26

Helfin, Bernard

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

203 32, 568895, 568914, C07C 2904, C07C 2980

Patent

active

043955762

ABSTRACT:
A process for the preparation of ethanol by catalytic hydration of ethylene in which the crude ethanol is separated by distillation in a first column into a bottom stream consisting of aqueous ethanol and a top stream containing diethyl ether and acetaldehyde, the bottom stream is processed further in a second column, the top stream is hydrogenated and then fractionated in a third column together with an impurities containing stream originating from the second column, and optionally the diethyl ether containing top stream of the third column is recycled to the hydration reactor.

REFERENCES:
patent: 2744939 (1956-05-01), Kennel
patent: 2770636 (1956-11-01), Steitz
patent: 2944087 (1960-07-01), Nommensen et al.
patent: 3678118 (1972-07-01), Frampton et al.
patent: 3960672 (1976-06-01), Ester et al.
patent: 3990952 (1976-11-01), Katzen et al.
Johnson et al., Chemistry & Industry, (Aug. 1953), pp. 528-531.

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