The formation of NOx in surface burners

✍ Scribed by A. Williams; R. Woolley; M. Lawes

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 712 KB
• Volume: 89
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(92)90025-k

✦ Synopsis

Surface combustion of premixed methane/air mixtures within and near the downstream surface of a porous matrix burner were experimentally investigated. The experiments included measurements of radiant flux, surface temperature, gas temperature, and stable species concentrations. Particular attention was given to the burned gas temperature profiles in order to define the flame zone, and compare its position with that predicted by a theoretical model that utilizes large-activation-energy asymptotic methods. Although most of the methane is combusted (-90%) within the porous medium, the maximum rate of heat release was found to occur at, or just outside, the surface. Prompt and thermal NO formation was modeled, and the vast majority of the NO was found to be formed by the prompt-NO mechanism.