Preparation of ozone for simultaneous removal of SO_(2) and NO_(x) with mud-phosphorus slurry

泥磷浆液制取臭氧同时脱除SO_(2)和NO_(x)

Desulfurization and denitrification by using ozone has been widely used in recent years,but the technology for generating ozone at this stage has some shortcomings,which needs to be improved urgently.This paper advocates using mud-phosphorous slurry to produce ozone,which is environmentally friendly and economical.At the same time,SO_(2) and NO_(x) can be removed from mud-phosphorous slurry simultaneously.The amount of ozone generated during desulfurization and denitrification is particularly important,thus,this paper studies the effects of the temperature of reaction,oxygen content and solid-liquid ratio of mud-phosphorus slurry on the amount of ozone generated.The results showed that under the optimum conditions(the reaction temperature was 60℃,the solid-liquid ratio of mud-phosphorus slurry was 5.0 g/40 mL,the oxygen content was 30%),the amount of ozone was the largest,and the maximum generation amount was 573.8 mg/m^(3).Under these conditions,the removal rates of SO_(2) and NO_(x) can reach 99.5%and 99%respectively.This paper also analyzes the products of desulfurization and denitrification,and proposes the corresponding reaction mechanism.

利用臭氧进行脱硫脱硝近年来备受关注,而现阶段产生臭氧的技术存在一些不足,亟需改善。采用泥磷浆液制取臭氧,环保且经济,并且泥磷浆液能够同时脱除SO_(2)和NO_(x)。在脱硫脱硝过程中臭氧的生成量尤为重要。本文研究了反应温度、氧含量、泥磷浆液固液比对臭氧生成量的影响。结果表明,在反应温度为60℃、泥磷浆液固液比为5.0 g/40 mL、含氧量为30%的条件下臭生成量最多,最大生成量为573.8 mg/m^(3),该条件下SO_(2)和NO_(x)的去除率分别可达99.5%和99%。对脱硫脱硝产物进行了分析,提出了泥磷浆液同时脱除烟气中SO_(2)和NO_(x)的反应机理。