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V₂O₅-WO₃/TiO₂基催化剂SCR法脱硝试验研究

Experiment Study on SCR DeNOX Behavior of V₂O₅-WO₃/TiO₂ Catalysts

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【Author】 Zhu Chong-bing1,Jin Bao-sheng1,Li Feng1,Zhai Jun-xia1,2(1.Key Laboratory of Clean Coal Power Generation and Combustion Technology of Ministry of Education,Southeast University,Nanjing,210096,China;2.Basic Department,Nanjing Institute of Technology,Nanjing 210013,China)

【机构】东南大学洁净煤发电及燃烧技术教育部重点实验室；东南大学洁净煤发电及燃烧技术教育部重点实验室江苏南京210096；江苏南京210096；南京工程学院基础部；江苏南京210013；

【摘要】以工业级锐钛型TiO2为载体制备了V2O5-WO3/TiO2脱硝催化剂,通过BET、XRD、SEM等方法对微观结构进行表征。并在SCR反应器中测试其脱硝性能。自制催化剂比表面积较小,晶相仍为锐钛型,温度为330~400℃、O2浓度大于1%、NH3/NO为0.9~1、空速比为24 000 h-1,脱硝效率达到80%以上,N2O生成率,NH3逃逸率及SO2氧化率均能够满足电厂脱硝的要求,并且因工业级TiO2粉体价格较低可降低催化剂成本。更多还原

【Abstract】 V2O5-WO3/TiO2 catalyst grafted over commercial anatase TiO2 was prepared,and BET、XRD、SEM were employed to investigate the micro structure.An experimental investigation was conducted to study the catalyst DeNOX activity in SCR activity reactor.BET surface area is not big but the main structure is still anatase TiO2.The experiment shows that this catalyst has higher removal efficiency(>80%),low SO2 Oxidation,N2O conversion and NH3 slip at 330~400℃,SV=24000 h-1,NH3/NO at 0.9~1,which reach the industry application requirement.The catalyst cost can be decreased because of low price of commercial TiO2.更多还原