LKAB is running several research projects with the objective to reduce NOx emissions from their pellet production plants. The pelletizing process is rather multifaceted involving a highly turbulent high temperature flow in intricate geometries. Thus, a number of tools and means are applied to reach the goals desired. One of these projects is to investigate whether Selective Non-Catalytic Reduction (SNCR) is a suitable method for reducing NOx emissions during the manufacturing of pellets. As part of this project, my work is to develop a numerical model that enhances the understanding of the aerodynamics and mixing of species inside the rotary kiln towards reliable predictions of crucial parameters for the SNCR process.
My part of this project is to develop a CFD (Computational Fluid Dynamics) model that enhances the understanding of the aerodynamics and mixing of combustion gases in the rotary kiln incinerator. The model will later be merged with a model of the grate that is developed in a parallel project, together giving a full scale model of both grate and kiln.