Abstract
Selective Catalytic Reduction (SCR) system provides an effective approach to removing NOx emission, to meet stringent emission legislation of NOx generated by internal combustion engine. However, the oversized SCR system would increase its operation costs and occupy more space, which restricts its widespread application to a certain extent. Therefore, the compact structure design of SCR system is worthy of research considering the limited installation space. In the present study, one-dimensional SCR model is established, and the effect of structural parameters on the SCR performance has been investigated. Then, based on the Response Surface Methodology (RSM), the coupling relationship among these structural parameters is explored. The optimal structural parameter values of SCR are calculated through the multi-objective optimization function. The SCR volume of the optimal structural parameters is reduced by 23.82% and the pressure drop generated by SCR reactor is reduced by 10.38%. Meanwhile, the decrease of NOx conversion efficiency could be negligible under the same condition.
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