Module 7: Combustion and Environment
  Lecture 39: Emission and Its Control
 


Fuel (N2O – Intermediate) Mechanism

  • Thermal NO is quite small below 1300oC
  • Thermal NO rises sharply with temperature
  • Both fuel NO & prompt NO do not vary with temperature
  • But prompt NO increases marginally with temperature.

N2O intermediate mechanism plays a very important role for NO control in lean premixed combustion.

Three steps of N2O intermediate mechanism are given below;
(Figure 39.3)
 

Several techniques are devised to control in combustion as described in next section.