Modeling of Selective Catalytic Reduction (SCR) for NO Removal Using Monolithic Honeycomb Catalyst

作者：Lei Zhigang^*; Liu Xueyi; Jia Meiru

来源：Energy & Fuels, 2009, 23(12): 6146-6151.

DOI：10.1021/ef900713y

In this Study, a monolithic honeycomb catalyst is being used in a SCR reactor rather than pellet catalyst in many conventional gas-solid catalytic processes because the advantages of honeycomb matrix are very low pressure drop, high geometric specific Surface area, and resistance to deposition of carbon and dust. The three-dimensional computational fluid dynamics (CFD) simulation for SCR for NO removal in monolithic honeycomb reactor was performed. The mathematical model of monolithic SCR reactor, in which a Rideal-type DeNO(x) rate equation was incorporated, was established. The calculated results were compared with the experimental data to verify the reliability. It was found that the lower gas inlet velocity, higher gas inlet temperature, and higher NH(3)/NO feed ratio lead to higher NO conversion. The square shape of the monolith channel has a better performance both in NO conversion and pressure drop. The appropriate space length between two catalyst la layers under the investigated conditions is about 60 mill, which call result in good NO conversion and gas mixing.

• 出版日期2009-12
• 单位北京化工大学