3-D modeling of SCR of NOx by NH3 on vanadia honeycomb catalysts

B. Roduit , K. Baiker , F. Bettoni , Jerzy Robert Bałdyga , A. Wokaun

Abstract

A novel scheme for simulating the selective catalytic reduction of NO with NH3 on a honeycomb-type catalyst was developed based on a 3-D model. New insight was gained by considering such modeling aspects as: correct geometry (square ducts); hydrodynamic entrance effects; occurrence of adsorption phenomena and side reactions; NH3/NO ratio in the feed; influence of the reactant (NO, NH3, O2, H2O) concentrations; interphase diffusion and interphase mass-transfer processes; and a large range of operating conditions (temperature 140–475°C and gas hourly space velocity 14,800–73,900 h−1). These aspects proved to be crucial for interpreting and quantifying the experimental results and optimizing the catalytic reactor processes. The 3-D model was validated by comparing manufacturer's set point and experimental data to calculated data, and the external mass-transfer coefficients derived from the concentration gradients to the mass-transfer correlations available in the literature.
Author B. Roduit
B. Roduit,,
-
, K. Baiker
K. Baiker,,
-
, F. Bettoni
F. Bettoni,,
-
, Jerzy Robert Bałdyga ZIDRCh
Jerzy Robert Bałdyga,,
- Department of Chemical Reactor Engineering and Dynamics
, A. Wokaun
A. Wokaun,,
-
Journal seriesAICHE Journal, ISSN 0001-1541
Issue year1998
Vol44
No12
Pages2731-2744
Publication size in sheets0.65
DOIDOI:10.1002/aic.690441214
URL http://onlinelibrary.wiley.com/doi/10.1002/aic.690441214/abstract
Languageen angielski
File
Roduit B. (i in.) - 3-D modeling of....pdf (file archived - login or check accessibility on faculty) Roduit B. (i in.) - 3-D modeling of....pdf 1.22 MB
Score (nominal)35
Publication indicators WoS Impact Factor: 2006 = 2.153 (2) - 2007=2.052 (5)
Citation count*27 (2015-03-28)
Cite
Share Share



* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
Back