Method for solvent recovery in solvent separation of ethanol fro

Details Method for solvent recovery in solvent separation of ethanol fro Method for solvent recovery in solvent separation of ethanol fro

1983-07-14

1985-05-28

Evans, J. E.

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

Organic compounds

Oxygen containing

568916, 568918, 585818, C07C 2976, C07C 3108, C07C 2986, C07C 7144

Patent

active

045202133

ABSTRACT:
A process for the separation of ethanol from water using solvent extraction at elevated pressures is disclosed. Separation is effected by contacting aqueous ethanol with either propylene (propene), allene (propadiene), methyl acetylene (propyne), or methyl allene (1,2-butadiene). This produces two liquid layers which separate because of the difference in their densities, and are easily drawn off as separate streams. The solvent is recovered by reverse osmosis means in a liquid state. The ethanol and water remain in a liquid state and are substantially recovered.

REFERENCES:
patent: 2960462 (1960-11-01), Lee et al.
patent: 3035060 (1962-05-01), Binning et al.
patent: 3062905 (1962-11-01), Jennings et al.
patent: 3244763 (1966-04-01), Cahn
patent: 3950247 (1976-04-01), Chiang et al.
patent: 4035291 (1977-07-01), Chiang et al.
patent: 4349415 (1982-09-01), DeFilippi et al.
Binning et al., "The Refining Engineer", Jun. 1958, pp. C-14 and C-15.

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