V_2O_5-WO_3/TiO_2催化剂在玻璃窑SCR脱硝中的应用

Application of V_2O_5-WO_3/TiO_2 Catalyst in Selective Catalytic Reduction(SCR) Denitration of Glass Furnaces

氨气选择性催化还原(SCR)脱硝技术已成熟应用于玻璃窑炉脱硝工艺。文章介绍了SCR脱硝工艺的核心V_2O_5-WO_3/TiO_2蜂窝催化剂应用方案的设计要素,并列举了典型工程实例的设计方案,进行催化剂性能分析。设计要素包括催化剂节距的选择、体积用量及元件长度的计算、催化剂层数、模块布置和最低喷氨温度等。通过催化剂性能分析,得出结论:脱硝效率与烟气流量及入口NO_x浓度成反比,而与NH_3/NO_x摩尔比成正比,NH_3/NO_x摩尔比的增高会加大氨逃逸;在一定温度范围内,烟气温度与脱硝效率及SO_2/SO_3转化率均成正比;烟气流量的增大和催化剂化学使用时间的延长,导致了催化剂压降的升高。

The paper introduces the design element of application scheme of V2O5-WO3/TiO2honeycomb catalyst that is the core of SCR technology.The paper enumerates the design scheme of typical project examples,and makes analysis on catalyst performance.The design element includes the selection of catalyst pitch,calculation of volume and element length,the number of catalyst layer,module arrangement and lowest ammonia injection temperature etc.