Selective reduction of NOx by NH3 over honeycomb DeNOxing catalysts

被引：0

作者：

Svachula, Jiri ^{[1
]}

Ferlazzo, Natale ^{[1
]}

Forzatti, Pio ^{[1
]}

Tronconi, Enrico ^{[1
]}

Bregani, Fiorenzo ^{[1
]}

机构：

[1] Dipartimento di Chimica Industriale, e Ingegneria Chimica `G. Natta' del, Politecnico, Milan, Italy

来源：

Industrial and Engineering Chemistry Research | 1993年 / 32卷 / 06期

关键词：

Adsorption - Air pollution control - Ammonia - Catalyst selectivity - Chemical reactors - Composition effects - Diffusion - Flue gases - Nitrogen oxides - Reaction kinetics - Reduction;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Data are presented for the effects of feed composition (O2, NOx, NH3, H2O, SO2 concentrations) and of the operating conditions (area velocity, reaction temperature, and Re number) on the NOx removal efficiency over commercial-type honeycomb DeNOxing catalysts with different compositions and geometric characteristics. All of these data are explained by a Rideal type kinetic expression, derived assuming reaction between strongly adsorbed ammonia and gaseous or weakly bonded NO. The significance of interphase and intraparticle diffusion limitations is discussed, and a comprehensive model of the SCR monolith reactor is illustrated which fully accounts for both external and internal transport of the reactants as well as for the effects of the operating variables and of the feed composition under representative SCR conditions.

引用

页码：1053 / 1060