The thermal DeNOx process: Influence of partial pressures and temperature

摘要: Abstract The effect of partial pressures the reactants in Thermal DeNOx process has been investigated flow reactor experiments. experiments were performed at atmospheric pressure for temperatures ranging from 923 to 1373 K. Initial concentrations varied NH 3 NO ( 400 200 , 1000 500 2800 1400 ppm ) and O2 (0–50%). data confirm earlier observations that temperature range covered, presence is required order be reduced by NH3. As initial concentration increased, lower boundary shifted towards temperatures. reduction widened, but potential decreases. At high oxygen maximum NOx below 40%. Under these conditions, significant amounts NO2 N2O are formed. Two mechanisms formation have identified. One active higher low concentrations, while other, which presumably involves as a precursor, dominant levels. implications results application systems such pressurized fluidized bed combustion discussed. Comparisons experimental with recent chemical kinetic models indicate detailed chemistry system not completely understood.