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Process for the recovery of anhydrous hydrogen fluoride from aqueous solutions of fluosilicic acid and hydrogen fluoride

机译:从氟硅酸和氟化氢水溶液中回收无水氟化氢的方法

摘要

An electrodialytic distillative process for recovery of anhydrous hydrogen fluoride from an aqueous solution of fluosilicic acid and hydrogen fluoride wherein the concentration of hydrogen fluoride in said solution is such that hydrogen fluoride cannot be recovered therefrom by distillation, which comprises subjecting the solution to electrodialysis thereby increasing the total acids concentration in said solution to equal to or greater than about 46 weight percent, and thereafter recovering anhydrous hydrogen fluoride by distillation.
机译:用于从氟硅酸和氟化氢的水溶液中回收无水氟化氢的电渗析蒸馏方法,其中所述溶液中的氟化氢的浓度使得不能通过蒸馏从其中回收氟化氢,该方法包括对溶液进行电渗析,从而增加所述溶液中的总酸浓度等于或大于约46重量%,然后通过蒸馏回收无水氟化氢。

著录项

  • 公开/公告号US4389293A

    专利类型

  • 公开/公告日1983-06-21

    原文格式PDF

  • 申请/专利权人 ALLIED CORPORATION;

    申请/专利号US19820336734

  • 申请日1982-01-04

  • 分类号B01D57/02;

  • 国家 US

  • 入库时间 2022-08-22 09:50:09

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