Recovery of alcohol from a fermentation source by separation rat

Details Recovery of alcohol from a fermentation source by separation rat Recovery of alcohol from a fermentation source by separation rat

1983-01-03

1985-04-02

Kepplinger, Esther M.

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

Organic compounds

Oxygen containing

435161, 568918, 568920, C07C 2976, C07C 2986, C07C 3108, C12P 706

Patent

active

045089299

ABSTRACT:
Ethanol is recovered from fermentation products by a countercurrent extraction process which employs diethyl ether as the extraction solvent to form a diethyl ether-ethanol mixture. The ethanol is salted out by adding calcium chloride to the mixture, and the diethyl ether layer is separated and recycled. The calcium chloride in ethanol solution is removed by adding sodium carbonate to form the solids calcium carbonate and sodium chloride which are removed by filtration. The ethanol is recovered as the filtrate.

REFERENCES:
patent: 2053770 (1936-09-01), Dreyfus
patent: 2492098 (1949-12-01), Kelly
patent: 4262149 (1981-04-01), Dotson, Jr. et al.
patent: 4399000 (1983-08-01), Tedder
The Condensed Chemical Dictionary, 10th Ed., New York, Van Nostrand Reinh Co., 1981.
Chemical Abstracts, vol. 60, Abstract No. 1165c, Sergeeva et al., "The Salting Out Action of Calcium Chloride".
Chemical Abstracts, vol. 68, Abstract No. 48575d, Turevskaya et al., "Reaction of Magnesium Iodide with Alcohols in Ether Solutions".
Roddy, "Distribution of Ethanol-Water Mixtures to Organic Liquids", Ind. Eng. Chem. Process Des. Dev., vol. 20, (1981), pp. 104-108.
Turevskaya et al., "Interaction of Magnesium Iodide with Alcohols in Ethereal Solutions", Russian Journal of Inorganic Chemistry, 17(12), 1972, pp. 1761-1762.

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