Patent ID: 9181094
Filing Date: 2015-11-10
Classification: B01F,B01J,C01B

Abstract:
1. A method for continuously producing a peroxymonosulfuric acid solution with high stability, comprising the steps of: cooling 35 mass % concentration or more of hydrogen peroxide and 70 mass % concentration or more of sulfuric acid, respectively, mixing the cooled hydrogen peroxide and the cooled sulfuric acid to form a mixture while cooling the mixture for at least 1 minute and shorter than 5 minutes to react the mixture at 90° C. or higher, thereby obtaining a reaction solution; further cooling the reaction solution to 40° C. or higher and 80° C. or lower; and then diluting the reaction solution with water 4 times or more and 20 times or less as much as the reaction solution by mass; wherein before the dilution step, the cooled hydrogen peroxide and the cooled sulfuric acid is mixed while cooling, and further cooled within 5 minutes from the start of the mixing step.