Demonstration of a burner for the investigation of partially premixed low-temperature flames
- Department of Chemistry, Bielefeld University, Universitaetsstrasse 25, D-33615 Bielefeld (Germany)
- Combustion Research Facility, Sandia National Laboratories, Livermore, CA 94551 (United States)
- Institut fuer Technische Verbrennung, RWTH Aachen, Templergraben 64, D-52056 Aachen (Germany)
A burner, which stabilizes near-one-dimensional low-temperature flames at atmospheric pressure, was designed to access the combustion regime near 1500 K for quantitative species diagnostics. Combustion temperatures between 1300 and 1800 K in argon-diluted methane-oxygen flames were achieved by preheating the burner and adapting the inert gas flow. Mass spectrometry with electron ionization was used to determine mole fractions profiles of reactants, products, and intermediates. Combustion parameters were varied including stoichiometry, diluent mole fraction and preheat temperature. Mole fraction profiles resemble those taken in regular premixed flat flames. A number of C{sub 1}- and C{sub 2}-intermediates as well as some oxygenated species were identified. Higher-mass species (m/z > 42) were not detected in the low-temperature methane-oxygen flames which contain 90% argon in the cold gases. (author)
- OSTI ID:
- 21350373
- Journal Information:
- Combustion and Flame, Vol. 157, Issue 10; Other Information: Elsevier Ltd. All rights reserved; ISSN 0010-2180
- Country of Publication:
- United States
- Language:
- English
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