Numerical Simulation on High-Power Plasma Ignition Process Under Different Pulverized Coal Concentrations
Aiming at the shortcomings of large time and resource consumption in experimental research of plasma ignition,the numerical simulation was adopted to study the high-power plasma ignition process and the combustion process in the boiler under different pulverized coal concentrations.The simulation predicted the flow field,temperature,and distribution of components in the plasma igniter and the boiler when using low volatile coals.The influence of pulverized coal concentration on the success rate of plasma ignition was analyzed.With low concentration of pulverized coal,the plasma ignition is unstable or even fails;with high enough concentration of pulverized coal,the plasma ignition can ignite the pulverized coal stably.The simulation results are of great engineering guidance significance for the application of the plasma ignition in the low volatile coal combustion.
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