Abstract

The dependence of UV-visible emission characteristics in hydrocarbon flames as a function of flame equivalence ratio and total flow rate is examined for low-pressure acetylene/oxygen flames used for materials synthesis and for atmospheric-pressure methane/air flames typically seen in industrial boilers and heaters. In both flames, the OH and CH emission features show significantly different variations with respect to changes in equivalence ratio, while variations with changes in total flow rate are nearly identical. These results suggest that flame emission spectroscopy can be used as a sensitive, on-line process diagnostic for equivalence ratio monitoring in flame reactors.

Quantitative fuel-to-air ratio determination for elevated-pressure methane/air flames using chemiluminescence emission

Walker McCord, Mark Gragston, Yue Wu, Zhili Zhang, Paul Hsu, Keith Rein, Naibo Jiang, Sukesh Roy, and James R. Gord
Appl. Opt. 58(10) C61-C67 (2019)

Impact of plasma dynamics on equivalence ratio measurements by laser-induced breakdown spectroscopy

Johannes Kiefer, Bo Zhou, Zhongshan Li, and Marcus Aldén
Appl. Opt. 54(13) 4221-4226 (2015)

The Application of Separated Flames in Analytical Flame Spectroscopy

G. F. Kirkbright and T. S. West
Appl. Opt. 7(7) 1305-1311 (1968)

Atomic Absorption Spectroscopy with High Temperature Flames

J. B. Willis
Appl. Opt. 7(7) 1295-1304 (1968)

Laser-induced breakdown spectroscopy measurement in methane and biodiesel flames using an ungated detector

Kemal E. Eseller, Fang Y. Yueh, and Jagdish P. Singh
Appl. Opt. 47(31) G144-G148 (2008)