Abstract
Water with dissolved N-compounds ammonia, aminoethanol and ε-caprolactam (NH 3, C 2H 7NO and C 6H 11NO) was sprayed into a confined swirl flame operating under various conditions. The model waste water and the atomizing fluid influence the visible flame structure. Droplet evaporatio takes place in the recirculation zone of the flow. Measurements of the NO concentrations admit an evaluation of the conversion efficiency of the water dissolved N compounds under the present conditions. It can be shown that Fenimore's universal curve of fuel-N conversion in premixed ideal flames is applicable to describe and predict the NO formation in this very complex technical combustion systems.
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