用于选择性催化还原法烟气脱硝的催化剂

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.

CATALYST FOR SELECTIVE CATALYTIC REDUCTION DE-NOx REACTION IN FLUE GAS

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.