Effect of inclined angle of fuel jet on NOx emission in high temperature air combustion

Abstract

This paper investigates the effect of inclined angle of fuel jet on concentration of NOx emission in high temperature air combustion furnace. Computational Fluid Dynamics (CFD) modeling was implemented to investigate the combustion process and NOx formation in the furnace. The CFD model presented in this paper is validated by comparing the modeling results with measured data. The results show that the concentration of NOx emission decreases by increasing the inclined angle of fuel jet. Besides, the concentration of NOx emission drops with the decrease of oxygen concentration. Moreover, the effecting degree of inclined angle on NOx formation increases with the increase of oxygen concentration.