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    • 3. 发明申请
    • METHOD OF PREPARING ANHYDROUS HYDROGEN FLUORIDE BY USING SODIUM ALUMINUM TETRAFLUORIDE AND REACTION DEVICE FOR THE SAME
    • 通过使用四氢呋喃铝及其反应装置制备无水氢氟酸的方法
    • WO2011129563A3
    • 2012-03-08
    • PCT/KR2011002523
    • 2011-04-11
    • KCC CORPKANG KYOUNG HOONCHO YEON SEOKKIM SE JONGLEE HYUN DONGSHIM JEONG MOLEE WON KYUSONG MIN WOOK
    • KANG KYOUNG HOONCHO YEON SEOKKIM SE JONGLEE HYUN DONGSHIM JEONG MOLEE WON KYUSONG MIN WOOK
    • C01B7/19C01B9/08C01B17/96C01D5/00
    • C01B7/191C01B9/08C01F7/745C01F7/762
    • The present invention relates to a method of preparing anhydrous hydrogen fluoride by using sodium aluminum tetrafluoride and a reaction device for the same. More specifically, the present invention relates to a method of preparing anhydrous hydrogen fluoride by mixing and pulverizing sodium aluminum tetrafluoride (NaAlF4) as a fluoride source with sulfuric acid in a preliminary reactor to obtain gaseous anhydrous hydrogen fluoride (HF) and solid-state material, and treating the obtained solid-state material with heat in a main reactor to obtain gaseous anhydrous hydrogen fluoride and solid sodium aluminum sulfate (NaAl(SO4)2), and a reaction device for the same. According to the present invention, as a fluoride source for preparing anhydrous hydrogen fluoride, an NaAlF4 byproduct of monosilane production can be reused instead of expensive fluorspar (CaF2), which is very economical and friendly to the environment. In addition, the production yield of HF can be remarkably improved since a generation of bulky solids is suppressed by uniformly dispersing the viscous reaction intermediate of calcium hydrogen sulfate (Ca(HSO4)2) and the reactants are pulverized finely.
    • 本发明涉及使用四氟化铝铝制备无水氟化氢的方法及其制备方法。 更具体地说,本发明涉及一种通过在预备反应器中混合并粉碎作为氟化物源的四氟化钠铝(NaAlF 4)与硫酸制备无水氟化氢以获得无水氟化氢(HF)和固态物质的方法 在主反应器中用热量处理所得固体材料,得到气态无水氟化氢和固体硫酸铝钠(NaAl(SO 4)2)及其反应装置。 根据本发明,作为用于制备无水氟化氢的氟化物源,可以重复使用甲硅烷生产的NaAlF 4副产物,而不是昂贵的氟石(CaF 2),这对环境是非常经济和友好的。 此外,由于通过均匀分散硫酸氢钙(Ca(HSO 4)2)的粘性反应中间体而抑制了体积大的固体的产生,因此HF的产率可以显着提高,并且将反应物细粉碎。