Numerical simulation and experimental verification of chemical reactions for SCR DeNO_x

Abstract

Selective catalytic reduction (SCR) is a major commercial technology for NO_x removal in power plants. There are a lot of complex chemical reactions in SCR reactors, and it is of great significance to understand the internal process of chemical reactions for SCR DeNO_x and study the impact of various factors on NO_x removal efficiency. In this paper, the impact of reaction temperature, ammonia-nitrogen molar ratio and resident time in the catalyst bed layer on NO_x removal efficiency were studied by simulation of chemical reactions. Then calculated results were compared with catalyst activity test data in a power plant, which proved that the simulated results were accurate. As a result, the reaction conditions were optimized in order to get the best removal efficiency of NO, so that we can provide a reference for optimal running of SCR in power plants.

Keywords

SCR / NO_x / removal efficiency / chemical reactions / simulation

References

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Higher Education Press and Springer-Verlag Berlin Heidelberg