‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ μθ»SZρ KAWASAKI STEEL GIHO Vol.15 (1983) No.1 ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
WAg`
[upαNOxo[iΜJ Development of Low NOx Radiant Tube Burner ²‘@MΊ(Kuniaki Sato)@‘@UκY(Shinichiro Muto)@ϊε@Νη(Fumiya Yanagishima)@ΊR@Yρ(Yuji Shimoyama) |
v| : ηt»SΕΝC½ΪIΔέFiKM-CALjΜέΙΫ΅ΔCV^ΜWAg` [upαNOxo[i[πJ΅C»έC©ΠEΌΠΜCALECGL½ΜFΕΐpΙ³κΔ’ιB{o[i[ΝCσΜOσΙzu΅½}`KXmY©η¬o·ιRΏKXΖ»ΜOό©η¬o·ιO¬GA[ΕPRΔπCΒ’ΕSΙzu΅½ΰ¬GA[ΕQRΔ³Ήι±ΖΙζθX[YΘQiRΔπΐ»Ε«CΘΊΙ¦·Dκ½Α·πL΅Δ’ιB(1) ` [uΰΕ~όϋόE·θϋόΜRΔΟκ»ΙDκCΗIΘ·ζΜΆͺh~Ε«CNOxΆΚΜαΈCWAg` [u·xΜΟκ»ͺΎηκ½BΑΙCNOxΆΚΙΒ’ΔΝ]Μo[i[ζθρ35αΈ΅Δ’ιB(2) RΏKXΖGA[ΜX[YΘ¬ΙζθCRΔΉͺ¬³C©ΒCRΔψ¦ͺόγ΅Δ’ιB(3) O¬GA[ΖKXΜRΔ ΞΙΒ’ΔC\’IΙΐθ΅½ ΞΉͺ`¬·ιζ€Hv³κCα^[_EΕΰΐθ΅½RΔͺΕ«ιB |
Synopsis : Low NOx radiant tube burner has been developed for the multipurpose continuous annealing line (KM-CAL) at Chiba Works, Kawasaki Steel Corporation, and is now used at many furnaces such as CAL, CGL, etc. This burner consists of a two-stage combustion radiant tube in which combustion nozzles are arranged in a ring form. Primary combustion is initiated by the gas flow from encircling multi-nozzles and the outer air flow from the outermost nozzle and secondary combustion is effected by the inner air flow from the center nozzle. The above-mentioned smooth two-stage combustion ensures features described below. (1) Uniform combustion is achieved in both the circumferential and longitudinal directions within the tube and this contributes to low NOx and uniform temperatures of the tube. NOx emission is about 35% lower than that of conventional burners. (2) Smooth mixing between the gas and air is conducive to lower noise and higher combustion efficiency. (3) A device for igniting between outer-flow air and the gas provides a stable ignition source which accomplishes stable combustion even at low turn-down |
{ΆiPDF: 7P/280kbj |