Numerical Simulation of Combusting Flows in Coal-Fired Boiler Furnace

Abstract

It is important to determine unburnt carbon content and temperature distribution for design and operation of coal fired boiler. A numerical simulation of combustion flows in a coal-fired boiler furnace has been done using Reynolds equations, including solid gas two-phase flow. Gas flow patterns, coal behavior and diameter variation,and distributions of the heat release rate, temperature, and oxygen concentration have been obtained as numerical simulation results. Moreover, it has been made clear that coal trajectory and its diameter effect the heat release rate and unburnt carbon content.