Taking two(ultra)supercritical boilers as the examples

operating characteristics of the improved HT-NR3 swirl burner and its combustion adjustment test results were presented.The effects of air distribution parameters on boiler operating economy and pollutant emissions were discussed.Moreover

against the widespread problems of swirl burner

such as high CO concentrations

high temperature corrosion of water wall

combustor nozzle slagging

steam temperature and oxygen deviations

corresponding regulations were proposed to improve the boiler efficiency and reduce pollutant emissions

like on the internal secondary air flow of main burner

the opening degree of external swirl damper in the main burner

the external swirl damper of SOFA burner

internal direct air flow of SOFA burner and two side dampers of wind box.