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Removal of hydrogen fluoride from gaseous mixture by absorption on alkaline earth metal fluoride

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

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.
机译:使包含至多20%的氟化氢和对碱土金属氟化物呈惰性的其他气体的气体混合物与无水碱土金属氯化物在无水条件下氟化制得的无水颗粒状碱土金属氟化物接触。在无水碱土金属氟化物吸收了所需量的氟化氢,直至达到其吸收能力后,例如从其中除去氟化氢。通过热再生,碱土金属氟化物被再利用以从所述气态混合物吸收额外的氟化氢。

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