Investigation of the flow, combustion, heat-transfer and emissions from a 609MW utility tangentially fired pulverized-coal boiler

A numerical approach is given to investigate the performance of a 609 MW tangentially fired pulverized-coal boiler, with emphasis on formation mechanism of gas flow deviation and uneven wall temperature in crossover pass and on NOx emission. To achieve this purpose and obtain a reliable solution, some different strategies with the existing researches are used. Good agreement of simulation results with global design parameters and site operation records indicates this simulation is pretty reasonable and thus the conclusions of the gas flow deviation, emissions, combustion and heat transfer are reliable. These conclusions can be used to guide the design and operation of boilers of similar types.