臭氧氧化净化硫酸中的三氯乙醛

摘要

Trichloroacetaldehyde contained in sulfuric acid was removed by ozone oxidation .The process was optimized by response surface method .Effects of reaction time , ozone amount and reaction temperature on trichloroacetaldehyde decomposition rate were studied by central composite design method.Aquadratic response surface model was built to predict the effects of trichloroacetaldehyde removal .Model equation of trichloroacetaldehyde decomposition rate was highly significant , and effect of temperature and that of ozone amount’s quadratic were also highly significant .The model was analyzed and the best operation conditions were found: reaction temperature 50 ℃, ozone amount 0.6 g/h, and reaction time 102 min. Trichloroacetaldehyde decomposition rate reached 100% under the above conditions .Verification tests showed that the relative error between prediction value and test value was within ±3 .20%.The model gave accurate prediction , having guiding significance .%利用臭氧氧化法对硫酸中的三氯乙醛进行氧化去除，采用响应面法优化了工艺，用中心组合设计方法研究了反应时间、臭氧量、反应温度对三氯乙醛降解率的影响，并建立二次响应曲面模型，对臭氧氧化去除三氯乙醛的效果进行预测。三氯乙醛降解率的模型方程高度显著，温度和臭氧量的二次方影响高度显著。对模型进行分析得出最优操作条件：当反应温度为50℃、臭氧量为0．6 g／h、反应时间为102 min时，三氯乙醛降解率为100％。验证试验表明模型预测值和试验值相对误差在±3．20％内，精确度较高，模型具有一定的指导意义。