The role of fuel-rich clusters in flame stabilizaiton and NO_x emission reducito with precessin jet pulverized fuel flames

摘要

Effects of controlling the local strucutre of turbulence in confined pulverized coal flames have been investigated using obth reacting and nonreacting experiments .The reacting experiments,conducted in a 130 -kW rotary kiln simulator,showed that flame ignition distance is reduced by more than a factor of 2 compared to a monochannel flame by use of a precessing jet of air to enlarge the scale of mixing in the emerging ocal jet.