| OCR Text |
Show Oxy-fuel burners The LNI burner resulting from the ambient air work previously described has been augmented with the addition of oxygen capability to allow either mixed air/oxygen or 1 0 0 % oxygen firing capability. The present configuration uses an axially mounted 0 2 lance and identical injector locations to the ambient air burner. Results of parameter evaluations similar to those described for the previous investigations are shown in Figures 15-18. Figures 15 and 16 demonstrate the effect of the injector offset on N O x emissions. Figures 17 and 18 show the effect of the number of injectors. In both cases, it can be seen that significant differences in N O x emissions levels are attributable to variation in the number of injectors, and in the injector offset. HRam Q2 LNB NOx emissions 003 0.025 0.02 0.015 001 0.005 1600 1 6 MVBtu/h firing rate 1 injector I 1 - A i B 1 - •• •*/ w* 4y J+ r _ M 1800 2000 Terrperature, F 2200 2400 0.03 0.025- § 0.02- ^ 0.015 - 6 ooi. z 0.005. 0. HRam Q2 LNI NOx emissions 6 MvBtu/h firing rate 3hjectors I • L = 3 BL=4 • > " * *y* \mmJ*&* ^ £*J* »JI r*^ 1600 1800 2000 2200 2400 Terrperature, F Figure 15 Figure 16 0.03, S 0.02. s o 001 z 0. HRam Q2 LNI NOx 6 MMBtuli firing rate L=3 1 i # 1 injector B 2 injectors A 3 injectors •> • 4/ +Jl k [emissions • J %A* A A/4l X*\*T At\*** 1 1 1700 1800 1900 2000 2100 2200 2300 2400 Tenperature, F Figure 17 0.03 0.025.. S 0.02 .- s s "- 0.015.. O 0.01 .. z 0.005.. 0.. 17C HRam 02 LNJ NOx emissions 6 MMBtuh firing rate L=4 I ^ 1 injector B 2 injectors A 3 injectors _^ i.^J J&ir*' 4% ^J^I » 1800 1900 2000 2100 2200 2300 24 Terrperature, F 00 Figure 18 13 |
