Recovery of hydrogen fluoride from metallic fluoride salts

Details Recovery of hydrogen fluoride from metallic fluoride salts Recovery of hydrogen fluoride from metallic fluoride salts

1978-06-09

1980-11-11

Hearn, Brian E.

Chemistry of inorganic compounds

Halogen or compound thereof

Hydrogen halide

203 12, 203 74, 203 76, 423488, C01B 719

Patent

active

042332818

ABSTRACT:
Anhydrous hydrogen fluoride of high purity can be recovered from metallic fluoride salts containing phosphate values by digesting the metallic salts in an aqueous solution in a humid atmosphere at a sufficiently high temperature to release a gas containing hydrogen fluoride and negligible amount of P.sub.2 O.sub.5. The released gas is rectified in a rectification operation which includes a rectification zone in which the rectification occurs in the presence of sulfuric acid.

REFERENCES:
patent: 2753253 (1956-07-01), Hollingsworth
patent: 2759795 (1956-08-01), Archer
patent: 3091513 (1963-05-01), Parish
patent: 3167391 (1965-01-01), Swinehart
patent: 3257167 (1966-06-01), Mohr et al.
patent: 3615195 (1971-10-01), Bierman
patent: 3825655 (1974-07-01), Eipeltaner et al.
patent: 3935298 (1976-01-01), Sugahara et al.
Lecassie et al. "Sulfuric Acid Extractive Distillation Process for Recovery of Anhydrous Hydrofluoric Acid from By-Product Aqueous Hydrofluoric Acid" A.E.C., Technical Information Service NY02048, Declassified 1955.

Affiliated with

Also associated with

Rating

Recovery of hydrogen fluoride from metallic fluoride salts does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Recovery of hydrogen fluoride from metallic fluoride salts, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Recovery of hydrogen fluoride from metallic fluoride salts will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1690768