机构地区: 清华大学机械工程学院热科学与动力工程教育部重点实验室
出 处: 《煤炭转化》 2005年第2期18-24,共7页
摘 要: 论述了在使用不同催化剂和不同还原剂的条件下,选择性催化还原( SCR)脱除电站烟气中氮氧化物的基本原理.SCR催化剂有三种不同的类型:贵金属型、金属氧化物型和离子交换的沸石分子筛型,并讨论了三种不同催化剂在SCR反应过程中的活性特征.论述了在国外应用最广泛的V2 O5- WO3 - Mo O3 /Ti O2 类催化剂的成分组成以及各成分在反应过程中的作用.列举了在SCR催化剂的生产和使用过程中需要考虑和解决的主要问题. The paper concerns the selective catalytic reduction principle to de-NO_ x in flue gas using different catalysts and different reducing agent. It discusses the category of three types of SCR catalyst, which are included with noble metal catalyst, metal oxide catalyst, ion-exchanged zeolite catalyst, and describes the activity character of the three types catalysts in SCR reaction. The main composition and their action in the V_2O_5-WO_3-MoO_3 catalyst that has been used most commonly in the world are involved. The main questions that should be considered and solved in catalyst preparation and using are pointed out.
领 域: [动力工程及工程热物理]