Regular Paper
Chemical Role of CO2 on Fuel-NO and Recycled-NO Reduction Mechanisms in O2/CO2 Combustion
2013 Volume 79 Issue 804 Pages 1703-1713
Details
2013 Volume 79 Issue 804 Pages 1703-1713
The mechanism of fuel-NO formation and recycled-NO reduction in fuel-rich O2/CO2 combustion is studied by a flat CH4 flame experiment and detailed kinetics modeling. When fuel-N and recycled-NO are introduced into a flat flame simultaneously, NO is significantly decreased due to an interaction between fuel-N and recycled-NO. Detailed kinetics modeling reveals this interaction mechanism in NO reduction. The difference of N2 production from fuel-N and recycled-NO between air and O2/CO2 combustion is caused by CO2 reactivity expressed by CO2 + H → CO + OH (R1b). From the viewpoint of CO2 reactivity, O2/CO2 combustion is suitable for low-NOx combustion under fuel-rich condition where NH3 remains in air combustion.
Transactions of the Society of Mechanical Engineers
Transactions of the Japan Society of Mechanical Engineers
Transactions of the Japan Society of Mechanical Engineers Series A
Transactions of the Japan Society of Mechanical Engineers Series B
Transactions of the Japan Society of Mechanical Engineers Series C
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A
Transactions of the JSME (in Japanese)
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C
