Process for the recovery of sulfuric acid

Details Process for the recovery of sulfuric acid Process for the recovery of sulfuric acid

1982-02-11

1984-04-03

Straub, Gary P.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423522, 423531, 423DIG2, C01C 1242, C01B 1790

Patent

active

044407343

ABSTRACT:
The disclosure describes the recovery of sulfuric acid from industrial liquors containing the same. A selective liquid-liquid extraction of said liquors is carried out under conditions producing an organic phase containing the sulfuric acid and an aqueous phase eventually containing impurities. The organic phase is treated with a base, such as gaseous NH.sub.3, in order to separate the sulfuric acid. This process is simple, non-polluting, and requires little energy.

REFERENCES:
patent: 3333924 (1957-08-01), Hazen et al.
patent: 3870060 (1975-03-01), Liljenzin et al.
patent: 4082832 (1978-04-01), Watanabe
patent: 4211761 (1980-07-01), Tung
patent: 4285924 (1981-08-01), Pratt
patent: 4291007 (1981-09-01), Baniel

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