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http://dx.doi.org/10.7731/KIFSE.2012.26.5.035

Effects of CO Addition on Soot Formation in the Well Stirred Reactor  

Jeong, Tae-Hee (Department of Safety Engineering, Pukyong National University)
Lee, Eui-Ju (Department of Safety Engineering, Pukyong National University)
Publication Information
Fire Science and Engineering / v.26, no.5, 2012 , pp. 35-40 More about this Journal
Abstract
Numerical investigation was performed to study on the soot formation characteristics in the WSR according to the CO addition. Ethylene and pure air were used as a fuel and an oxidizer, respectively, and three different equivalence ratios (2.0, 2.5, 3.0) were used in the calculation. The resulted CO mole fraction of 10 % CO addition showed the maximum value in spite of the least CO supply. This means that the conversion of CO to soot and other carbon compounds is weakened under incipient soot formation. The soot volume fraction was decreased with increasing the CO addition because the important species for soot formation such as pyrene and acetylene, were decreased with the addition of CO. When the equivalence ratio was 2.5, the soot volume fraction shows the highest value, which results from the contribution of fuel rich condition and reacting temperature. Furthermore, surface growth rate and species concentrations justified the HACA mechanism for soot formation.
Keywords
WSR (well stirred reactor); Soot formation; Method of moment;
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Times Cited By KSCI : 2  (Citation Analysis)
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1 I. M. Kennedy, "Models of Soot Formation and Oxidation", Prog. Energy Combust. Sci., Vol. 23, pp. 95-132 (1997).   DOI   ScienceOn
2 H. Richter and J. B. Howard, "Formation of Polycyclic Aromatic Hydrocarbons and Their Growth to Soot - A Review of Chemical Reaction Pathways", Prog. Energy Combust. Sci., Vol. 26, pp. 565-608 (2000).   DOI   ScienceOn
3 H. Guo, K. A. Thomson and G. J. Smallwood, "On the Effect of Carbon Monoxide Addition on Soot Formation in Laminar Ethylene/air Coflow Diffusion Flame", Combust. Flame, Vol. 156, pp. 1235-1142 (2009).
4 D. X. Du, R. L. Axelbaum and C. K. Law, "Soot Formation in Strained Diffusion Flames with Gaseous Additives", Combust. Flame, Vol. 102, pp. 11-20 (1995).   DOI   ScienceOn
5 J. H. Ji and E. J. Lee, "The Effects of Carbon Dioxide as Additives on Soot Formation in Jet Diffusion Flames", Journal of Korean Institute of Fire Science & Engineering, Vol. 24, No. 6, pp. 170-175 (2010).
6 J. H. Ji and E. J. Lee, "The Characteristics of Soot at the Post-flame Region in Jet Diffusion Flames Added Carbon Dioxide", Journal of Korean Society of Safety, Vol. 25, No. 6, pp. 9-13 (2010).
7 L. G. Blevins, R. A. Fletcher, B. A. Benner, E. B. Steel and G. W. Mulholland, "The Existence of Young Soot in the Exhaust of Inverse Diffusion Flames", Proc. Comb. Inst., Vol. 29, pp. 2325-2333 (2002).   DOI   ScienceOn
8 F. W. Lam, J. P. Longwell and J. B. Howard, "The Effect of Ethylene and Benzene Addition on the Formation of Polycyclic Aromatic Hydrocarbons and Soot in a Jet- Stirred/Plug-Flow Combustor", Proc. Comb. Inst., Vol. 23, pp. 1477-1484 (1990).
9 J. P. Longwell and M. A. Weiss, "High Temperature Reaction Rates in Hydrocarbon Combustion", Industrial and Engineering Chemistry, Vol. 47, pp. 1634-1642 (1955).   DOI
10 J. E. Nenniger, A. Kridiotis, J. Chomiak, J. P. Longwell and A. F. Sarofim, "Characterization of a Toroidal Well Stirred Reactor", Proc. Comb. Inst., Vol. 20, pp. 473-479 (1984).
11 R. F. Reich, S. D. Stouffer, V. R. Katta, H. T. Mayfield, C. W. Frayne and J. Zelina, "Particulate Matter and Polycyclic Aromatic Hydrocarbon Determination Using a Well-Stirred Reactor", AIAA Paper 2003-0664 (2003).
12 S. D. Stouffer, R. C. Striebich, C. W. Frayne and J. Zelina, "Combustion Particulates Mitigations in a Well- Stirred Reactor", AIAA Paper 2002-3723.
13 J. W. Blust, D. R. Ballal and G. J. Sturgess, J. Propul. Power, Vol. 15, p. 216 (1999).   DOI   ScienceOn
14 J. Zelina and D. R. Ballal, "Combustor Stability and Emissions Research Using a Well-Stirred Reactor", Journal of Engineering for Gas Turbines and Power-Transactions of the ASME, Vol. 119, pp. 70-75 (1997).   DOI   ScienceOn
15 N. J. Brown, K. L. Revzan and M. Frenklach, "Detailed Kinetic Modeling of Soot Formation in Ethylene/air Mixtures Reacting in a Perfectly Stirred Reactor", Proc. Comb. Inst., Vol. 27, pp. 1573-1580 (1998).   DOI   ScienceOn
16 R. J. Kee, F. M. Rupley and J. A. Miller, "CHEMKIN-II, A FORTRAN Chemical Kinetics Package for the Analysis of Gas-phase Chemical Kinetics", Sandia Report SAND89-8009B (1991).
17 M. Freklach and H. Wang, "in: H. Bockhorn (Ed.), Soot Formation in Combustion: Mechanism and Model", Springer-Verlag, Heidelberg, p. 165 (1994).
18 A. Kazakov, H. Wang and M. Frenklach, Combust. Flame, Vol. 100, pp. 111-120 (1995).   DOI   ScienceOn
19 J. Appel and H. Bockhorn, "Kinetic Modeling of Soot Formation with Detailed Chemistry and Physics: Laminar Premixed Flames of C2 Hydrocarbons", Combust. Flame, Vol. 121, pp. 122-136 (2000).   DOI   ScienceOn
20 M. Frenklach, D. Clary, W. Gardiner and S. Stein, "Detailed Kinetic Modeling of Soot Formation in Shocktube Pyrolysis of Acetylene", Proc. Comb. Inst., Vol. 20, pp. 887-901 (1985).   DOI   ScienceOn