Recovery system for preparing magnesium sulfate from sulfuric acid waste solution and method thereof

Abstract

A recovery system for preparing magnesium sulfate from sulfuric acid waste solution is disclosed. The system comprises a reactor configured to remove hydrogen peroxide from the sulfuric acid waste solution and to promote a reaction between the sulfuric acid waste solution and a magnesium-based neutralizing agent to form a magnesium sulfate solution, a crystallization device configured to cool the magnesium sulfate solution and continuously crystallize magnesium sulfate crystals and a crystallization mother liquor, a dewatering device configured to separate the crystallization mother liquor from the magnesium sulfate crystals, and a drying device configured to obtain magnesium sulfate hydrates containing 0 to 7 molecules of crystalline water by controlling a drying temperature. A method for preparing magnesium sulfate using the recovery system is also disclosed.

Dependencies are inferred from the claim text.