This article discusses the alcohol,sodium chlorate,sulfuric acid as the raw material for preparing chlorine the orthogonal experiment explores the factors that affect the yield and purity of chlorine dioxide,i.e.the ratio of material,acidity.And the optimum process conditions: when the ratio of sodium chlorate and the alcohol's mole is 4:1.5 the concentration of sulphuric acid for 6 mol/L,and the reaction temperature was 55 ℃,reaction time 35min,chlorine dioxide production rate up to 93%,a purity of 94%.In ...