Multiple effect evaporation process

Details Multiple effect evaporation process Multiple effect evaporation process

1974-10-30

1976-11-23

Sofer, Jack

Concentrating evaporators

Processes

Involving waste liquid

159 17VS, 159 46, 159 17P, 426430, 2604124, B01D 126, B01D 100, A23L 110

Patent

active

039935353

ABSTRACT:
There is disclosed a multiple-effect evaporation system wherein the last effect of the system in the direction of miscella flow is provided with a stripping tower in which vapor effluent from that effect countercurrently contacts feed to that effect. In application to the recovery of solvent from miscella obtained by the extraction of defatted seed material with an aqueous organic carbohydrate-selective solvent, pressure in the evaporation zone of one of the effects is maintained at atmospheric. Additionally, at least one of the effects other than said last effect may be provided with a rectification column.

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patent: 1934677 (1933-11-01), Ash
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patent: 2567179 (1951-09-01), Bonotto
patent: 2790708 (1957-04-01), Karnofsky
patent: 3118775 (1959-12-01), Byer et al.
patent: 3271160 (1966-09-01), Kopas et al.
patent: 3468674 (1969-09-01), Levin
patent: 3520868 (1970-07-01), Henderson et al.
patent: 3630754 (1971-12-01), Wayne
patent: 3867416 (1975-02-01), Barns

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