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Removal of hydrogen fluoride from gaseous mixture by absorption on alkaline earth metal fluoride
Removal of hydrogen fluoride from gaseous mixture by absorption on alkaline earth metal fluoride
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机译:通过吸收碱土金属氟化物从气态混合物中除去氟化氢
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摘要
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.
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