Recovery of phenol from low concentrations with sodium sulfate

Details Recovery of phenol from low concentrations with sodium sulfate Recovery of phenol from low concentrations with sodium sulfate

C - Chemistry, Metallurgy

01

D

C01D 5/00 (2006.01) B01D 3/34 (2006.01) C07C 37/74 (2006.01) C07C 37/80 (2006.01) C07C 39/04 (2006.01)

Patent

CA 2145069

Phenol plant waste water (1) containing small amounts of phenol and sodium sulfate is successfully distilled (7) through the addition of recovered sodium sulfate (3) to enhance the volatility of the phenol relative to water, at least a portion (3) of the sodium sulfate (15) is recycled, while a significant portion (17) of the phenol (5) can be returned to the phenol plant for recovery.

On a réussi à distiller (7) l'eau résiduaire d'une installation de traitement du phénol (1) contenant de petites quantités de phénol et de sulfate de sodium en ajoutant du sulfate de sodium récupéré (3) afin d'acroître la volatilité du phénol par rapport à l'eau; au moins une partie (3) du sulfate de sodium (15) est recyclée alors qu'une partie importante (17) du phénol (5) peut être renvoyée à l'installation de traitement du phénol pour être récupérée.

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