SCR烟气脱硝催化剂的化学动力学模拟研究  

STUDY ON CHEMICAL KINETICS SIMULATION OF THE CATALYST FOR SCR FLUE GAS DENITRIFICATION

作　　者：杜云贵[1] 吴其荣 邓佳佳 李芳 

机构地区：[1]重庆大学资源与环境科学学院,重庆400004 [2]中电投远达环保工程有限公司,重庆400060

出　　处：《热力发电》2010年第2期52-55,共4页Thermal Power Generation

基　　金：国家科技支撑计划资助项目(2007BAC24B00)

摘　　要：选择性催化还原(SCR)烟气脱硝是目前应用最为广泛的烟气脱硝技术之一。根据SCR脱硝机理,建立了催化剂的化学反应速率方程,采用计算流体力学(CFD)模拟软件Fluent,模拟了脱硝效率与氨氮摩尔比及停留时间的关系、氨逃逸率与氨氮摩尔比之间的关系。将模拟结果与一些已有的试验结果进行比较,证明CFD模拟能有效反映催化剂孔内的化学反应状况。At present,the selective catalyst reduction （SCR） flue gas denitrification is one of the most widely used flue gas denitrification technology. Based on mechanism of SCR denitrification, the speed rate equation of chemical reation has been established. By adopting computational fluid dynamics （CFD） simulation software Fluent, the relationship between denitrification efficiency and NH3/NO molar ratio or residence time,as well as the relationship between ammonia escape rate and NH3/NO molar ratio have been simulated. The results of simulation is compared with the test results existing at present,it is proved that the CFD simulation can effectively reflect the chemical reaction in voids of the catalyst.

关 键 词：SCR烟气脱硝 催化剂 化学动力学 CFD模拟 脱硝效率 氨氮摩尔比 氨逃逸率 

分 类 号：X701[环境科学与工程—环境工程]