FAN Qingwei, ZHANG Fan, LIU Dingpo, et al. Numerical simulation on air flow distribution characteristics in boiler secondary-air-box[J]. Thermal power generation, 2014, 43(5): 87-90.
FAN Qingwei, ZHANG Fan, LIU Dingpo, et al. Numerical simulation on air flow distribution characteristics in boiler secondary-air-box[J]. Thermal power generation, 2014, 43(5): 87-90.DOI:
Taking the secondary-air-box of a 600 MW unit boiler equipped with swirl burners as the example
numerical simulation was conducted to investigate the air distribution and flow characteristics among each burner inside the secondary-air-box.The results show that
the flow rates of side burners were lower than that of the middle one
but the deviation was just within 6%-8%. At the burner's outlet section
air velocity from the facing air side was 10m/s lower than that from the back air side.By adjusting the secondary air door's opening degree of the five burners
the combustion optimization scheme that can increase the side burner'air flow was obtained.The simulation results agreed well with the field test results.