Furnace Combustion Process Simulations of a 680MW Ultra-Supercritical Boiler of Wall Tangential-Firing Combustion

With the help of CFD ( computational fluid dynamics) software Fluent and by choosing a rational mathematical model, a numerical simulation was performed of a 680 MW ultra-supercritical wall-type-arranged tangentially-fired boiler. Value simulation of the combustion process inside the furnace can be developed. Values simulated are particle movement, temperature, speed and thermal differentials inside the furnace and at the furnace outlet. The value simulation shows that the pulverized particles ignited easily, had good stable combustion characteristics, good radiation firmness, good penetration ability, low sulphur content in flyash, flow stream not easily diverted or form slag, tangential diameter slightly smaller, furnace thermal difference slightly smaller, thermal load in the furnace was uniform, and thermal differential at furnace outlet very small.