Process for the reclamation of acid from spent pickle liquor

Details Process for the reclamation of acid from spent pickle liquor Process for the reclamation of acid from spent pickle liquor

1978-08-23

1980-04-08

Caroff, Marc L.

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

134 13, 423DIG1, 423DIG2, B08B 704

Patent

active

041971396

ABSTRACT:
A process for reclaiming pickling liquor acid from spent pickle liquor comprises injecting the spent liquor from a metal pickling process into a container having an upper section, a lower liquid holding section and a heating means. The spent pickle liquor in the container lower section is heated, and the water therein is vaporized and returned to the pickling process in a vapor state to be absorbed therein and provide heat thereto. A substantial portion of the unused acid is removed from the spent pickle liquor and is also returned to the pickling process without cooling.

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Kolek, "Hydrochloric Acid Recovery Process", Chem. Engnr. Prog., vol. 69, (1973), p. 47.

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