摘要：
选取4份国内不同催化剂厂家的蜂窝式SCR脱硝催化剂,测量并对比其机械性能和活性,结合理化特性分析催化剂机械性能与活性不达标的原因.结果表明,脱硝催化剂的机械性能和活性受多方面因素的影响.催化剂中主活性成分和助催化剂WO3的含量,CaO,K,Na,Mg等碱金属,碱土金属元素以及比表面积、孔容等微观孔结构都能影响催化剂的活性.SiO2,Al2O3等玻璃纤维含量和生产工艺会影响催化剂的机械性能.燃煤电厂需根据烟气条件对催化剂进行选型和设计,催化剂生产厂家必须优化和调整催化剂各生产环节工艺参数,严格把控原料质量,确保生产的催化剂产品同时具备良好的机械性能和较高的活性,以满足电厂实际需要.%The catalytic activity and mechanical strength were measured,compared and analyzed for four domestic honeycomb-type SCR denitration catalysts from different vendors. The results indicated that catalytic activity and mechanical strength were influenced by many factors,such as the loading of main catalytic and assistant element of WO3,the amount of CaO,alkali metal element K,Na,alkali earth metal element Mg,as well as pore volume,spe-cific surface area and so on. The SiO2,Al2O3 and production process could influence the mechanical strength of cata-lysts. Coal fired power plants need to select and design catalysts according to flue gas conditions. The catalyst pro-ducers should optimize and adjust the production process parameters,control material quality strictly,and provide high level of catalysts to meet the strict demands both on catalytic activity and mechanical strength for coal fired power plants.
