Numerical simulation of urea based selective non-catalytic reduction deNOx process for industrial applications

The aim of this paper is to show capabilities of the developed mathematical framework implemented in the commercial CFD code AVL FIRE®, to simulate physical processes of all relevant phenomena occurring during the SNCR process. First, mathematical models for description of SNCR process are presented and afterwards, models are used on the 3D geometry of an industrial reactor and a real industrial case to predict SNCR efficiency, temperature and velocity field. Influence of the main operational parameters on NOx reduction efficiency was performed on the same case. Finally, conclusions about validity of current framework are given together with recommendations for further work.