The influence of biased secondary air in concentrically and tangentially firing system upon the air dynamic field in furnace, slagging, and NOx emission etc. has been studied and approached, the problems needing to pay attention during design of biased secondary air being analysed. At the same time, recommendations for adopting reasonable biased angle of the said secondary air, and for momentum moment ratio of the primary and secondary air, as well as for suitable coal quality have been put forward.
Thermal Power Generation
concentrically and tangentially fired boiler
biased secondary air
air dynamic field
momentum moment ratio.