Process for the continuous rectification of alcoholic fermates

Details Process for the continuous rectification of alcoholic fermates Process for the continuous rectification of alcoholic fermates

1982-11-04

1985-04-16

Sever, Frank

Distillation: processes, separatory

Distilling to separate or remove only water

From organic compound

203 77, 203 79, 203 80, 203 83, 203 85, 203 96, 435161, 568916, B01D 338

Patent

active

045114374

ABSTRACT:
A process for continuous rectification of a liquid mixture containing alcohols, particularly a liquid fermate, employs a plurality of distillation columns to which the liquid mixture is fed in parallel, and which have successively reduced operating pressures and temperatures from an initial one to a final one thereof. The top vapor distillate from the higher-pressure columns supplies driving heat to the sumps of the next successively lower-pressure columns. Direct steam at 130.degree. C. to 160.degree. C. is fed to the sump of the column operated at the highest pressure. Direct steam is generated by indirect heat exchange of water with the top vapor withdrawn from the columns, and the resulting direct steam is fed to the sumps of the next-lower-pressure columns. The apparatus can also include a section for the production of absolute alcohol.

REFERENCES:
patent: 2181731 (1939-11-01), Hinckley
patent: 3179159 (1965-04-01), Jafs
patent: 3259553 (1966-07-01), Halbritter
patent: 3303106 (1967-02-01), Standiford
patent: 3428107 (1969-02-01), Backteman
patent: 3926739 (1975-12-01), Izumi
patent: 4305790 (1981-12-01), Kramer, Sr.
patent: 4346113 (1982-08-01), Faust et al.
patent: 4358536 (1982-11-01), Thorsson et al.
Weiss, Moglichkeiten zur Energieeinsparung bei der Destillation, 32 Chem. Techn. 448-451, Sep. 1980.

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