METHOD FOR RECOVERING HYDROCHLORIC ACID FROM IRON CHLORIDE SOLUTION

摘要

The present invention relates to a method for recovering hydrochloric acid from iron chloride solution wherein the iron chloride is mixed with sulfuric acid to obtain reacting mixture wherein the sulfuric acid concentration is at least 55% (w/w) in the solution to produce hydrochloric acid which is subsequently evaporated at re¬ duced pressure of 225 mbar or less and condensed, and iron sulfate monohydrate, wherein the mixing, the evaporation and the precipitation of iron sulfate monohy¬ drate are carried out in the same single vessel.