Patent ID: 6676917
Filing Date: 2004-01-13
Classification: C01B,C01C,C01D

Abstract:
A process for the production of hydrochloric acid and neutralized sulfates, which comprises:a) reacting sulfuric acid with an alkaline metal chloride in order to obtain a liquor containing hydrochloric acid, an acid alkaline metal sulfate and an excess of sulfuric acid; b) separating the hydrochloric acid from the liquor containing the hydrochloric acid, the acid alkaline metal sulfate and an excess of sulfuric acid; c) neutralizing the acid alkaline metal sulfate and the sulfuric acid excess by adding to the remaining liquor after the separation of the hydrochloric acid, a neutralizing agent to obtain a neutralized mass; d) cooling the neutralized mass to crystallize the neutralized alkaline metal sulfate and obtain neutralized alkaline metal sulfate crystals; and e) separating the neutralized alkaline metal sulfate crystals from the liquor.