Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acid esters
Patent
1982-08-11
1984-05-08
Evans, J. E.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acid esters
562606, 562608, 568411, 568492, 568699, 568868, 568869, 568916, C07C 6748, C07C 5142, C07C 4134, C07C 2974
Patent
active
044476434
ABSTRACT:
A thermally efficient process for recovering an oxygenated organic material, such as ethanol, present in dilute aqueous solution is disclosed which comprises contacting said dilute aqueous solution with at least one inert extractant which is liquid at ambient temperature and pressure, said extractant being selected from the group consisting of unsubstituted and substituted cyclic secondary amines and unsubstituted and substituted aromatic cyclic amines having a distribution coefficient of at least about 0.70 or a separation factor of at least about 1.0. The invention further provides a process for obtaining substantially anhydrous oxygenated organic material from a dilute aqueous solution thereof in which the stream is subjected to liquid-liquid extraction to provide an oxygenated organic material poor raffinate phase and an oxygenated organic material rich extract phase, the oxygenated organic material present in said latter phase is concentrated in a rectifying column to provide an aqueous oxygenated organic material of high concentration and, if desired or necessary, the concentrated stream is azeotropically distilled in an anhydrous column operated under substantially superatmospheric pressure with thermal values recovered from said anhydrous column being used to satisfy part of all of the thermal operating requirements of the rectifying column.
REFERENCES:
patent: 2107527 (1938-02-01), Evans et al.
patent: 2691669 (1954-10-01), Walker
patent: 2791550 (1957-05-01), West et al.
patent: 3904676 (1975-09-01), Curtis
patent: 3980701 (1976-09-01), Grinstead
patent: 4032583 (1977-06-01), Arganbright et al.
patent: 4143066 (1979-03-01), Kalcevic
Evans J. E.
National Distillers and Chemical Corporation
Tremain Kenneth D.
LandOfFree
Process for recovering oxygenated organic compounds from dilute does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for recovering oxygenated organic compounds from dilute , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for recovering oxygenated organic compounds from dilute will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1603933