Numerical Study of a Pulverized Coal Combustion Process In an Industrial Entrained Flow Reactor

Authors

1 Assistant Professor, Mech. Eng., Dashtestan Branch, Islamic Azad University, Dashtestan, Iran

2 PH,D student in Mechanical Engineering-Dashtestan Islamic Azad University

10.22044/jsfm.2024.12724.3698

Abstract

In this study, a three dimensional numerical simulation of an industrial entrained flow combustion reactor has been conducted. The governing equations and reactions are implemented and the operating parameters are considered according to the experimental works. The results obtained from the numerical simulation are validated by comparing with existing experimental data and similar published papers. Four different devolatilization models are investigated and the simulation results are compared to each other. The obtained results show that although the Kobayashi model has a higher calculation time, it provides more accurate results compare to the experimental results. The effect of increasing/decreasing of injected coal particle sizes are studied. The results show that increasing of the coal particle sizes from 55 to 120 μm has led to a decrease in the gas temperature inside the reactor. By reducing the average coal particle size from 55 to 30μm, the gas temperature close to the flame has increased from 1800 K to 1900 K.

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Journal of Solid and Fluid Mechanics

Articles in Press, Accepted Manuscript
Available Online from 29 April 2024

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