Direct Use of Kinetic Parameters for Modeling and Simulation of a Selective Catalytic Reduction Process

Abstract

The reaction kinetics over a V2O5−WO3/TiO2 catalyst which can describe the NH3 slip from a selective catalytic reduction (SCR) reactor as well as the maximum conversion of NO over a wide range of reaction temperatures was developed to design the SCR process. The modeling of the reactor based upon the kinetics developed in the present study was successfully accomplished by the inclusion of the effect of diffusion resistance in the honeycomb reactor model. The honeycomb reactor model could directly employ the kinetic parameters obtained from the kinetic study over a packed-bed flow reactor. The model could also predict the effects of the catalytic wall thickness on the honeycomb reactor and the pore structure of the catalyst on the NO removal activity and NH3 slip, regardless of the types of the honeycomb, washcoated or extruded. The present study also identified that the diffusion resistance in the honeycomb reactor plays a critical role in the design of the commercial-scale SCR reactor despite the relativ...