Removal of hydrogen fluoride from gaseous mixture by absorption

Details Removal of hydrogen fluoride from gaseous mixture by absorption Removal of hydrogen fluoride from gaseous mixture by absorption

1975-03-11

1976-08-24

Adee, John

Gas separation

Means within gas stream for conducting concentrate to collector

55 74, 423483, 423484, 423488, B01D 5302

Patent

active

039764478

ABSTRACT:
A gaseous mixture containing up to 20% of hydrogen fluoride and other gases inert to alkaline earth metal fluorides is passed in contact with particulate anhydrous alkaline earth metal fluoride prepared by the fluorination of anhydrous alkaline earth metal chloride in the absence of water. After the anhydrous alkaline earth metal fluoride has taken up the desired amount of hydrogen fluoride, up to its absorption capacity, the hydrogen fluoride is removed therefrom, e.g. by heat regeneration, and the alkaline earth metal fluoride is reused to absorb additional hydrogen fluoride from said gaseous mixtures.

REFERENCES:
patent: 2426558 (1947-08-01), Long et al.
patent: 2526776 (1950-10-01), Smith et al.
patent: 3798875 (1974-03-01), Morris

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