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V₂O₅-WO₃/TiO₂催化剂氨法SCR脱硝反应动力学研究

Kinetics study of the selective catalytic reduction of NO with NH₃ over V₂O₅-WO₃/TiO₂ catalyst

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【Author】 FAN Hong-mei~(1,2),ZHONG Zhao-Ping~2,JIN Bao-sheng~2,LI Feng~2,LIU Tao~2,ZHAI Jun-xia~(2,3)(1.College of Civil Engineering Department of Environment Engineering,Southeast University,Nanjing 210096,China;2.Department of Power Engineering,Key Laboratory of Clean Coal Power Generation and Combustion Technology of Ministry of Education,Southeast University,Nanjing 210096,China;3.Basic Department,Nanjing Institute of Technology,Nanjing 210013,China)

【机构】东南大学土木工程学院环境工程系；东南大学动力系洁净煤发电及燃烧技术教育部重点实验室；东南大学动力系洁净煤发电及燃烧技术教育部重点实验室江苏南京210096；东南大学动力系；洁净煤发电及燃烧技术教育部重点实验室；江苏南京210096；南京工程学院基础部；江苏南京210013；

【Abstract】 In this work,a kinetic study of the selective catalytic reduction of NO with NH₃ has been carried out.After proving the operating condition that the effect of intraphase diffusion and interphase mass-transfer processes can be ignored,the selective catalytic reduction of NO with NH₃ on the catalytic activity of V₂O₅-WO₃/TiO₂ has been carried out with fixing the feed gas flow rate and composition（NO,NH₃,O₂） while varying the catalyst loading.Based on the experimental results of NO removal efficiency,the empirical catalytic reaction rate equation of NO with NH₃ has been obtained using differential analysis.The experimental result is further proved by the graphic integral method at the temperature from 320℃ to 400℃.The reaction order is 1 to NO and zero to NH₃.The reaction follows the Eley-Rideal mechanism model.更多还原