Modeling of No_x emissions from a w-shaped boiler furnace under different operating conditions

摘要

A numerical model for gas-particle flow dynamics has been combined with an NO_x chemistry post-processor to predict the formation of nitric oxide in a three-dimensional, W-shaped boiler furnace burning pulverized fuel. The model includes complex interactions in gas-particle turbulent flow, heat transfer, gaseous chemical reaction, coal combustion, and NO_x reaction cheis- try. Because fuel nitrogen is released in proportion to burnout of pulverized coal particles, the particles are treated in a Lagrangian framework in order to track burning pulverized coal particles through the gas continuum.