Fenton氧化法进行燃煤烟气脱硝反应的动力学分析  

DYNAMIC STUDIES ON DENITRATION OF FLUE GAS BY FENTON REACTION

作　　者：温学友[1,2,3] 赵毅 苗志加[2,3] WEN Xue-you1,2,3 , ZHAO Yi1 , MIAO Zhi-jia2,3(1. College of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, China; 2. School of Water Resources and Environment, Hebei GEO University, Shijiazhuang 050031, China; 3. Hebei Province Collaborative Innovation Center for Sustainable Utilization of Water Resources and Optimization of Industrial Structure, Shijiazhuang 050031, China)

机构地区：[1]华北电力大学环境科学与工程学院,河北保定071003 [2]河北地质大学水资源与环境学院,石家庄050031 [3]河北省水资源可持续利用与产业结构优化协同创新中心,石家庄050031

出　　处：《环境工程》2018年第9期59-62,80,共5页Environmental Engineering

基　　金：国家重点研发计划项目(2017YFC0210603);河北省自然科学基金青年基金项目(E2016403035)

摘　　要：从反应动力学角度上分析了Fenton氧化法进行燃煤烟气脱硝反应的反应过程,研究发现:在初始ρ(H_2O_2)为10.5%～16.5%,ρ(Fe(II))为2.9～3.6 mmol/L时,脱硝效率到达最高值;随着初始NO浓度的增加,脱硝效率得到提升,但整体提升幅度并不明显。利用反应动力学原理对结果进行分析,得到反应过程的拟合方程表达式和表观动力学方程,总反应级数为3.58。且表观动力学方程的计算值和实验值拟合度较高,说明建立的表观动力学方程能很好地预测Fenton氧化法燃煤烟气脱硝反应的反应速率,这可为工程应用提供参考。This study mainly analyzed the reaction kinetics characteristics of coal-fired flue gas denitrification by Fenton oxidation. The denitrification efficiency reached the highest level when the initial concentration of H2 O2 and Fe （Ⅱ） was 10. 5% -16.5% and 2.9- 3.6 mmol/L, respectively. The denitrification efficiency was not significantly enhanced with the increase of initial concentration of NO. The reaction kinetics was studied by analyzing experimental data, and the fitting equation was obtained. The order of reaction was 3.58. In summary, the apparent kinetic equation could accurately predict the reaction rate of coal-fired flue gas denitrification using Fenton oxidation, and that provided theoretical directions for the engineering application.

关 键 词：烟气净化 FENTON 动力学 H2O2 

分 类 号：X773[环境科学与工程—环境工程]