Impure sulfuric acid treatment process

Details Impure sulfuric acid treatment process Impure sulfuric acid treatment process

1975-07-25

1977-01-04

Thomas, Earl C.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423528, 423320, C01B 1790, C01B 1772, C01B 2516

Patent

active

040013839

ABSTRACT:
A process for thermally-degrading the thermally-degradable organic matter contained in spent sulfuric acid by condensing steam in the spent acid for a time sufficient to degrade the thermally-degradable organic matter, the steam being at a pressure exceeding the vapor pressure of said spent acid. Treated sulfuric acid is useful in the production of wet process phosphoric acid by a novel process. Spent sulfuric acid containing non-degradable organic matter can be used in a mixture with the treated sulfuric acid.

REFERENCES:
patent: 2067985 (1937-01-01), Sargent
patent: 2345506 (1934-03-01), Slotterbeck
patent: 2799557 (1957-07-01), Seyfried et al.
patent: 2992070 (1961-07-01), Henley

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