Study of the Effective Parameters on Selective Catalytic Reduction of NOx by Ammonia over a Vanadia-Titania Catalyst from Exhaust Gases
Journal Title: JOURNAL OF ADVANCES IN CHEMISTRY - Year 2014, Vol 6, Issue 2
Abstract
The removal of nitrogen oxides (NOx) is crucial problem for global environment. In This study, a 3D dynamic simulation model for the application in investigation of the reaction characteristic and the phenomena of transport in the catalytic filter of the SCR reactor is introduced. In order to make an assessment on the kinetic parameters of the model by the mechanism of Eley-Ridel (ER) from experimental data, an optimization method which acts by integrating the Taguchi method, a real-coded genetic algorithm auxiliary model is proposed. With the aid of the introduced dynamic model, the impacts of the key parameters, namely operating temperature, the gas hourly space velocity, the amount of the applied ammonium and the cross section of the channel of SCR reactor on the NOx conversion and NH3 slip phenomena were investigated. By comparing with the experimental data available in the literature, it was validated and it is found that NOX conversion increases with the decrease in the operation temperature, the space velocity, the concentration of H2O, the ratio of NH3/NOX, and the increase in O2 concentration. Moreover, it is evident that the reactors with the square shaped cross section have more percentage of conversion but the resident time in the corner increased.
Authors and Affiliations
Hossein Atashi, Esmaeel Moradian
Keywords
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- EP ID EP652606
- DOI 10.24297/jac.v6i2.7665
- Views 177
- Downloads 0
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