Influence of Nozzle Design on the Performance of a Partial Combustion Lance: A CFD Study

• Main Authors: Law, Woon Phui, Jolius, Gimbun
• Format: Article
• Language: English
• Published: Elsevier 2015
• Subjects: TP Chemical technology
• Online Access: http://umpir.ump.edu.my/id/eprint/11819/1/68%20LWP%20ChERD%20preprint.pdf; http://umpir.ump.edu.my/id/eprint/11819/; http://dx.doi.org/10.1016/j.cherd.2015.09.020
• Institution: Universiti Malaysia Pahang

This paper presents a computational fluid dynamics (CFD) simulation of a partial combustion lance (PCL) aiming to evaluate the effect of nozzle design on its performance. Four turbulence models, namely, standard k-ε (SKE), realisable k-ε (RKE), renormalised (RNG) k-ε and Reynolds stress model (RSM) were used. The combustion process was modelled using the species transport model, whereas the heat transfer was calculated by considering a combined convection-radiation boundary condition. The best CFD prediction was obtained using the second-order discretisation, standard pressure, unsteady solver and RSM with a 6% deviation from the experimental data. The modified nozzle design shows increases in excess of 45% of the peak combustion temperature in the PCL. The findings from this work may be useful for design retrofits of a PCL.