Distillation: processes – separatory – With chemical reaction – Including step of adding catalyst or reacting material
Patent
1974-10-10
1976-11-09
Bernstein, Hiram H.
Distillation: processes, separatory
With chemical reaction
Including step of adding catalyst or reacting material
203 36, 203 37, 203 84, 203 85, 203 97, 260643R, C07C 2924, B01D 334
Patent
active
039909522
ABSTRACT:
A crude alcohol-containing mixture comprising a saturated aliphatic alcohol of not more than three carbon atoms and associated impurities is processed in a three-tower distillation system to permit recovery of the desired alcohol product in highly concentrated and purified form. In the first tower the crude feed is subjected to extractive distillation with water to remove substantially all the impurities overhead. An aqueous bottoms stream from the first tower containing 5 to 10 wt.% alcohol and only minor amount of impurities is fed to the second tower where the alcohol product is concentrated and recovered. Overhead and intermediate purge streams containing low boiling and hgh boiling impurities are removed from the second tower and are fed to the third tower along with the overhead from the first tower. Stripped aqueous effluent is withdrawn from the bottom of the second tower and is recycled in part to the first tower. An aqueous alkali solution is introduced into the second tower and regulated so that the concentration of alkali in the stripped aqueous effluent from the bottom of the tower is from about 0.10 to about 0.24 gram per liter. The impurities are recovered as by-products from the third tower, and an alcohol stream is recycled from the third tower to the first tower.
REFERENCES:
patent: 1831425 (1931-11-01), Ricard
patent: 2207111 (1940-07-01), Rodenberg
patent: 2666735 (1954-01-01), Morrell et al.
patent: 2696463 (1954-12-01), Baevsky
patent: 3230156 (1966-01-01), Katzen
patent: 3265594 (1966-08-01), De Jean et al.
patent: 3445345 (1969-05-01), Katzen et al.
Diebold Vincent B.
Katzen Raphael
Bernstein Hiram H.
Raphael Katzen Associates International Inc.
LandOfFree
Alcohol distillation process does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Alcohol distillation process, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Alcohol distillation process will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1724115