Patent ID: 6890508
Filing Date: 2005-05-10
Classification: C01B

Abstract:
1. A process for preparing largely HBr-free HCl gas or largely HBr-free aqueous HCl solution, which comprises the following steps: a) providing HBr-containing HCl gas; b) passing the HBr-containing HCl gas through aqueous HCl solution saturated with HCl; c) separating off HBr-containing aqueous HCl solution saturated with HCl; d) optionally, passing the largely HBr-free HCl gas obtained in step b) into water to obtain largely HBr-free aqueous HCl solution; with largely HBr-free aqueous solution produced in step d) being able, optionally, to be recirculated to step b) of the process.