Production of chlorine from chloride salts

Details Production of chlorine from chloride salts Production of chlorine from chloride salts

1979-07-27

1981-05-26

Thomas, Earl C.

Chemistry of inorganic compounds

Halogen or compound thereof

Elemental halogen

423482, 423507, 423549, 423552, 423DIG12, C01B 704

Patent

active

042698170

ABSTRACT:
A process for converting chloride salts and sulfuric acid to sulfate salts and elemental chlorine is disclosed. A chloride salt and sulfuric acid are combined in a furnace where they react to produce a sulfate salt and hydrogen chloride. Hydrogen chloride from the furnace contacts a molten salt mixture containing an oxygen compound of vanadium, an alkali metal sulfate and an alkali metal pyrosulfate to recover elemental chlorine. In the absence of an oxygen-bearing gas during the contacting, the vanadium is reduced, but is regenerated to its active higher valence state by separately contacting the molten salt mixture with an oxygen-bearing gas.

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patent: 4107280 (1978-08-01), Rohlmann

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