Nitric oxide formation by inverse diffusion flames in staged-air burners

✍ Scribed by William P. Partridge Jr; Normand M. Laurendeau

• Publisher: Elsevier Science
• Year: 1995
• Tongue: English
• Weight: 898 KB
• Volume: 74
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(95)00121-k

✦ Synopsis

Chemiluminescent measurements of NO and NO, in the exhaust of a laboratory staged-air burner were made to investigate furnace emissions. Emissions throughout the transition from primary fuel-rich to overall fuel-lean conditions were mapped for a range of secondary-air jet parameters. This allows quantification of the NO, emissions through the rich-to-lean transition and also their sensitivity to secondary-air injection parameters. Mixing of the secondary air with the primary products was identified as a key parameter in NO, reduction. In all cases the NO, emissions were observed approximately to plateau when turbulent mixing was established in the combustor. The NO, emissions at the most lean stoichiometry (do = 0.5) were equivalent, within the measurement uncertainty, for all combustor geometries investigated.