Process for the production of substantially HBr-free HCl gas and a substantially HBr-free aqueous HCl-solution

摘要

Production of substantially hydrogen bromide-free hydrogen chloride gas or aqueous solutions comprises: ??(i) leading an HBr-containing gas through an HCl-saturated aqueous HCl solution; ??(ii) separating off the HBr-containing saturated aqueous HCl solution; and optionally also ??(iii) passing the HCl gas obtained into water to recover aqueous saturated solutions, optionally with recycling to step (i). ??An Independent claim is also included for apparatus for the process comprising: ??(A) a plate column for washing the HCl gas with an HCl-saturated aqueous solution; ??(B) a droplet separator; ??(C) a device producing pure water; and ??(D) an absorption column for introducing the purified HCl gas obtained in column (A) and separator (B) into the purified water so as to yield HBr-free aqueous HCl solutions.