Convective recirculation effect on the selective non-catalytic reduction behavior in an industrial furnace

F. C. L. Oliveira, W. P. Martignoni, E. Souza, L.G. Pereira, L.S. Santos, D.M. Prata, L.P.C. Monteiro
2017 Brazilian Journal of Chemical Engineering  
Selective non-catalytic reduction (SNCR) has become an important technique for reducing NOx emissions in industrial furnaces. The occurrence of convective recirculation can cause significant changes in SNCR performance. This paper presents the results of a study performed by Computational Fluid Dynamics (CFD) considering: (i) changes of initial NO X ; (ii) injection plan and (iii) NH 3 /NO molar ratio. The simulations have demonstrated that the convective recirculation (resultant from different
more » ... tant from different injection plans and high temperature gradients) of flue gas assumes a role of vital importance for performance analysis of existing plants and the potential NO X reduction in furnaces during the design phase.
doi:10.1590/0104-6632.20170344s20150420 fatcat:wwhuqh5fcjcthgihjpzofkacpm