| 摘要 |
1. Method for producing a water solution of hydrogen peroxide under vacuum process from ammonium persulphate by two-stage hydrolysis and distillation, separation and condensation of H2O2 vapours, characterised in that the first stage of hydrolysis between 40-60% and distillation is run at indirect heating preferably in vertical pipes and at the concentration of ammonium persulphate between 400-600g/dm<3>, preferably not less than 450g/dm<3> which are obtained by returning the appropriate part of the solution after separation process on the first stage of hydrolysis, and the second stage is being carried out by direct contact of the solution with water steam of superheat enabling complete evaporation of hydrogen peroxide generated at this stage of hydrolysis under conditions of foam process and developed surface of the liquid on the filling surface.
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