3.7. Summary of N-S interactions at various equivalence ratios
The qualitative effect of the addition of SO2-gas on NOX emissions (as NO, NO2 and total NOX) is summarised in the following Table:
Equivalence ratio ( )
| NO
| NO2
| Total NOX
|
| 0.833
| 
| ---
|
|
| 1.000
| 
| 
|
|
| 1.200
| ---
| 
|
|
Table 14: Qualitative effect of SO2 addition on emissions of nitrogenous species at various equivalence ratios (font size denotes relative extent of interactions)
- NO emissions are decreased by SO2, strongly at fuel-lean and less intensely at stoichiometric conditions, but emissions are negligible at fuel-rich conditions.
- NO2 emissions are increased by SO2, strongly at fuel-rich and stoichiometric conditions, but emissions are negligible at fuel-lean conditions.
- Total NOX emissions are strongly decreased at fuel-lean conditions, but increased at both stoichiometric and fuel-rich conditions, although more strongly in the latter conditions.
Pollutant formation and interaction in the combustion of heavy liquid fuels
Luis Javier Molero de Blas, PhD thesis, University of London, 1998
© Luis Javier Molero de Blas
