Process for producing hydrogen fluoride from an aqueous solution

Details Process for producing hydrogen fluoride from an aqueous solution Process for producing hydrogen fluoride from an aqueous solution

1977-12-15

1979-07-31

Thomas, Earl C.

Chemistry of inorganic compounds

Halogen or compound thereof

Hydrogen halide

423488, C01B 722

Patent

active

041630459

ABSTRACT:
A process for producing hydrogen fluoride from an aqueous solution of hydrogen fluoride and sulfuric acid by distillation at an elevated temperature, in order to evaporate hydrogen fluoride of a desired concentration, in which the aqueous solution of hydrogen fluoride and sulfuric acid is stripped by steam in a separation zone, the released hydrogen fluoride is passed through a drying zone, where it is contacted with a batch of strong sulfuric acid in order to produce hydrogen fluoride of a desired concentration, and the sulfuric acid from the drying zone is fed to the separation zone.

REFERENCES:
patent: 3455650 (1969-07-01), Conte et al.

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