SNOX法催化脱除模拟烟气中NO○x及SO2实验研究

为了实际考察SNOX方法的工艺条件对烟气中NO○x及SO2的催化脱除效果，针对NO○x的催化还原反应，采用浸渍法制备CuO/γ-Al2O3催化剂，考察了反应温度、空间速度、n(NH3)/n(NO○x)、SO2浓度对NO○x转化率的影响；针对SO2催化氧化反应，采用筛选出的V2O5催化剂，实验考察了反应温度、空间速度、n(O2)/n(SO2)对SO2转化率的影响.以实验研究成果为依据，进行了反应动力学计算.研究结果表明，在实验确定的最佳工艺条件下，NO○x还原率可达87.5%，经两级氧化SO2的转化率达94.3%.

Experimental Study on Catalytic Removal of NOx and SO2 from Simulation Gas by SNOX Method

The influences of practical technological conditions of SNOX method on the catalytic removal efficiencies of NOx and SO2 from flue gas were studied experimentally. For studying the catalytic reduction reaction of NOx, CuO/γ-Al2O3catalyst was prepared by impregnation method. The influences of reaction temperature, space velocity, n(NH3)/n(NOx) and SO2 concentration on the conversion rate of NOx were investigated. For studying the catalytic oxidation reaction of SO2, V2O5 catalyst was applied. The influences of reaction temperature, space velocity, n(O2)/n(SO2) on the conversion rate of SO2 were investigated. Based on the experimental results, kinetic calculations for the reactions were carried out. The results showed that, under the optimum conditions, the reduction rate of NOx can reach 87.5%, and after two stages of oxidation, the conversion rate of SO2 can reach 94.3%.