The effects of molecular structure on soot formation,I. Soot thresholds in premixed flames |
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Authors: | D.B. Olson J.C. Pickens |
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Affiliation: | AeroChem Research Laboratories, Inc., P.O. Box 12, Princeton, NJ 08542 USA |
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Abstract: | Soot thresholds have been measured in atmospheric pressure, laminar premixed flames of 55 pure hydrocarbons. Soot threshold data as a function of fuel structure parameters are presented in four forms; threshold soot indices, TSIs; equivalence ratios assuming combustion to CO2 and H2O, fc; equivalence ratios assuming combustion to CO and H2O, ψc; and carbon to oxygen atom ratios (C/O)c. The relative TSI scale allows comparison with previous measurements and removes apparatus-dependent variations in the data. Data were obtained for more than 40 previously unstudied fuels, including 15 alkanes, 14 alkenes, 7 alkynes, and 15 aromatics. Comparison with similar data in the literature gave good agreement. Suggested TSI values are given for all fuels which have been reported. |
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