Carrier-vapor distillation

Details Carrier-vapor distillation Carrier-vapor distillation

1977-02-02

1978-05-23

Bernstein, Hiram H.

Distillation: processes, separatory

With disparate physical separation

Utilizing removing solid from liquid

203 49, B01D 902

Patent

active

040909220

ABSTRACT:
Process for the separation or purification of heat-sensitive compounds by carrier-vapor distillation, wherein the superheated solvent vapor which is loaded with the compound to be distilled is cooled by treatment with condensed solvent in counter-current and the amount of condensed solvent is measured in such a manner that a saturated solution of the compound which is almost at boiling point is formed from the superheated, loaded vapor. The process being especially apted for separating or purifying 4-hydroxybenzaldehydes optionally substituted by one or more C.sub.1 -C.sub.4 -alkoxy groups.

REFERENCES:
patent: 3378467 (1968-04-01), Colton
patent: 3578567 (1971-05-01), Malvin
patent: 3687821 (1972-08-01), Zalles
patent: 3694322 (1972-09-01), Ikeda

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