Process for the recovery of a strong acid from an aqueous soluti

Details Process for the recovery of a strong acid from an aqueous soluti Process for the recovery of a strong acid from an aqueous soluti

1994-09-07

1997-02-18

Warden, Robert J.

Distillation: processes, separatory

With chemical reaction

Including step of adding catalyst or reacting material

203 49, 203 71, 203 85, 585721, B01D 334

Patent

active

056038127

ABSTRACT:
A process for the recovery of an acid in its anhydrous form from an aqueous solution containing the acid in its hydrated form. The process includes adding to the solution a weak base in the form of a soluble salt of the acid, and concentrating the solution containing the acid hydrate and the salt of the acid to a substantially water-free, acid-salt mixture. The acid is distilled off in its anhydrous form from the acid-salt mixture.

REFERENCES:
patent: 4362601 (1982-12-01), Morita
patent: 5220095 (1993-06-01), Hommeltoft

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