Abstract
The inhibition and promotion of isothermal NCl3 flame by NOCl and H2, respectively, are explained. The crossover from the isothermal mode of flame propagation to the thermal one is analyzed for NCl3–He mixtures. Calculations based on a kinetic mechanism taking into account energy chain branching are performed, and qualitative agreement between the calculated and observed data is demonstrated. The one-dimensional problem of chain–thermal flame propagation by a chain reaction involving a nonlinear-branching step has two solutions corresponding, one corresponding the isothermal mode of flame propagation and the other corresponding to the chain–thermal one. Nonlinear chain branching shortens the time needed for thermal ignition and increases the flammability of the combustible mixture.
Similar content being viewed by others
REFERENCES
Semenov, N.N., O nekotorykh problemakh khimicheskoi kinetiki i reaktsionnoi sposobnosti (Some Problems of Chemical Kinetics and Reactivity), Moscow: Akad. Nauk SSSR, 1958.
Voronkov, V.G. and Semenov, N.N., Propagation of Cold Flame in Mixtures Containing 0.03% Carbon Disulfide, Zh. Fiz. Khim., 1939, vol. 13, p. 1695.
Zel'dovich, Ya.B. and Frank-Kamenetskii, D.A., Thermal Nature of Flame Propagation, Dokl. Akad. Nauk SSSR, 1938, vol. 19, p. 693.
Azatyan, V.V., Borodulin, R.R., and Rubtsov, N.M., NCl2 Radicals in the Low-Density Nitrogen Trichloride, Dokl. Akad. Nauk SSSR, 1979, vol. 249, no. 5, p. 1375.
Bulatov, V.P., Vedeneev, V.I., Kitaigorodskii, A.N., and Sarkisov, O.M., Steady-State Propagation of the Reaction Zone in Methane Fluorination under Isothermal Conditions, Izv. Akad. Nauk SSSR, Ser. Khim., 1975, no. 8, p. 1882.
Azatyan, V.V., Kalkanov, V.A., and Shavard, A.A., On the Mechanism of Silane Oxidation, React. Kinet. Catal. Lett., 1980, vol. 15, no. 3, p. 367.
Azatyan, V.V., Specific Features of Nonisothermal Chain Reactions and New Theoretical Aspects, Kinet. Katal., 1999, vol. 40, no. 3, p. 818.
Baillou, F., Lisbet, R., and Dupre, G., Features of NCl3 Decomposition, Proc. 7th Int. Symp. on Loss Prevention and Safety Promotion in the Process Industries, Taormine, 1992, p. 43.
Hersuaw, T.L., Herrero, S.D., and Schlie, L.A., NCl (a 1 D) and I (52 P 1/2) Production in a D/NCl3/HI Transverse Flow Reactor, J. Phys. Chem., 1998, vol. 102, p. 6239.
Rubtsov, N.M., Nonlinear Reactions and Active Intermediates in the Thermal Decomposition of Nitrogen in the Gas Phase, Cand. Sci. (Chem.) Dissertation, Moscow: Inst. of Chemical Physics, 1983.
Kaganova, Z.I., Kinetics of the Propagation of Isothermal Flames, Cand. Sci. (Phys.–Math.) Dissertation, Moscow: Inst. of Chemical Physics, 1982.
Azatyan, V.V., Borodulin, R.R., and Rubtsov, N.M., Nonthermal Propagation of Nitrogen Trichloride Flame, Fiz. Goreniya Vzryva, 1980, vol. 5, p. 34.
Rubtsov, N.M., Thermal Decomposition of Nitrogen Trichloride: Kinetic Mechanism and Chemical Oscillation, Kinet. Katal., 2000, vol. 41, no. 1, p. 12.
Azatyan, V.V., Borodulin, R.R., Markevich, E.A., et al., Isothermal Propagation of Nitrogen Trichloride Flame, Izv. Akad. Nauk SSSR, Ser. Khim., 1976, no. 7, p. 1459.
Azatyan, V.V., Borodulin, R.R., and Rubtsov, N.M., Periodic Ignition of Nitrogen Trichloride, Kinet. Katal., 1980, vol. 21, no. 2, p. 316.
Rubtsov, N.M., Azatyan, V.V., and Borodulin, R.R., Rate Constants of Chain Origination and Propagation in Nitrogen Trichloride Decomposition, Izv. Akad. Nauk SSSR, Ser. Khim., 1980, no. 7, p. 1234.
Rubtsov, N.M., Nitrogen Trichloride Decomposition in the Presence of Dihydrogen. I. Nitrogen Trichloride Decomposition in the Presence of Dihydrogen near the Lower Flammability Limit, Kinet. Katal., 2001, vol. 42, no. 6, p. 626.
Azatyan, V.V., Novozhilov, B.V., Posvyanskii, V.S., and Semenov, N.N., Velocity and Propagation Limits of Flame in the Cold Oxidation of Carbon Disulfide, Kinet. Katal., 1976, vol. 17, no. 6, p. 1386.
Kaganova, Z.I. and Novozhilov, B.V., Inverse Problem in Combustion Theory Illustrated by the Example of Isothermal Flame in Nitrogen Trichloride Decomposition, Khim. Fiz., 1982, no. 10, p. 1110.
Azatyan, V.V., Borodulin, R.R., Markevich, E.A., and Rubtsov, N.M., Decomposition Kinetics of Nitrogen Trichloride under Low-Density Flame Conditions, Fiz. Goreniya Vzryva, 1978, vol. 14, no. 2, p. 20.
Rubtsov, N.M. and Kotelkin, V.D., On the Nature of the Upper Limit of Isothermal Flame Propagation in the Branching Chain Decomposition of Nitrogen Trichloride, Mendeleev Commun., 2001, p. 61.
Clark, M.A.A. and Cruse, H.W., Atomic Resonance Fluorescence Spectrometry for Rate Constants of Rapid Bimolecular Reactions. I. Reactions O + NO2, Cl + ClNO, Br + ClNO, J. Chem. Soc., Faraday Trans, 1972, vol. 68, no. 8, p. 1281.
Apin, A.Ya., Some Explosive Properties of Nitrogen Trichloride, Zh. Fiz. Khim., 1940, vol. 14, p. 494.
Rubtsov, N.M., Interaction of Reaction Chains in Physically Promoted and Unpromoted Combustion and Low-Temperature Deposition Processes, Doctoral (Chem.). Dissertation, Chernogolovka, Moscow oblast: Inst. of Structural Macrokinetics, 1997.
Frank-Kamenetskii, D.A., Diffuziya i teploperedacha v khimicheskoi kinetike (Diffusion and Heat Transfer in Chemical Kinetics), Moscow: Nauka, 1967.
Tablitsy fizicheskikh velichin (Tables of Physical Quantities), Kikoin, I.K., Ed., Moscow: Atomizdat, 1976.
Clark, T.C. and Clyne, M.A.A., Kinetic Mechanisms in Nitrogen–Chlorine Radical Systems. II. Kinetics of Elementary Reactions of Nitrogen Trichloride, J. Chem. Soc., Faraday Trans., 1970, vol. 66, p. 372.
Azatyan, V.V., Borodulin, R.R., Markevich, E.A., et al., Kinetics of Chain Branching and Termination in Nitrogen Trichloride Decomposition, Dokl. Akad. Nauk SSSR, 1975, vol. 224, no. 4, p. 1096.
Rubtsov, N.M. and Borodulin, R.R., Determining the Rate Constant of Linear Branching in the Gas-Phase Decomposition of Nitrogen Trichloride, Kinetika i mekhanizm fiziko-khimicheskikh protsessov (Kinetics and Mechanisms of Physicochemical Processes), Chernogolovka, Moscow oblast, 1981, p. 14.
Clyne, M.A.A. and Stedman, D.H., Recombination of Ground State Halogen Atoms. II. Kinetics of the Overall Recombination of Chlorine Atoms, J. Chem. Soc., Faraday Trans., 1968, vol. 64, p. 2698.
Ambidge, P.F., Bradley, J.N., and Whittock, D.A., Kinetic Study of the Reaction of Hydrogen Atoms with Hydrogen Chloride, J. Chem. Soc., Faraday Trans., 1976, vol. 72, p. 2143.
Exton, D.B., Gilbert, J.V., and Coombe, R.D., Generation of Excited NCl by the Reaction of Hydrogen Atoms with NCl3, J. Phys. Chem., 1991, vol. 95, p. 2692.
Posvyanskii, V.S., Velocity and Propagation Limits of Isothermal Flames, Cand. Sci. (Phys.–Math.) Dissertation, Moscow: Inst. of Chemical Physics, 1976.
Marchuk, G.I., Metody vychislitel'noi matematiki (Methods of Computational Mathematics), Moscow: Nauka, 1989.
Gray, P., Griffiths, J.F., and Scott, S.K., Oscillations, Glow and Ignition in Carbon Monoxide Oxidation in an Open System. II. Theory of the Oscillatory Ignition Limit in C.S.T.R., Proc. Roy. Soc. London, 1985, vol. 402, p. 187.
Nicolis, G. and Prigogine, I., Self-organization in Non-equilibrium Systems, New York: Wiley, 1977.
Rubtsov, N.M., Borodulin, R.R., and Saidkhanov, S.S., Vibrationally Excited Intermediates in Nitrogen Trichloride Decomposition, Khim. Fiz., 1984, vol. 3, no. 3, p. 521.
Rozenshtein, V.B., Bedzhanyan, Yu.R., and Gershenzon, Yu.M., Study of the Branching Chain Reaction of NF2 Radicals with Hydrogen Peroxide by Laser Magnetic Resonance, Kinet. Katal., 1987, vol. 28, no. 2, p. 273.
Azatyan, V.V., Role of Peroxy Radicals in Oxidation, Kinet. Katal., 1999, vol. 40, no. 2, p. 180.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Rubtsov, N.M., Kotelkin, V.D. Propagation of Isothermal Flame in the Low-Pressure Thermal Decomposition of Nitrogen Trichloride. Theoretical Foundations of Chemical Engineering 36, 370–381 (2002). https://doi.org/10.1023/A:1019855917833
Issue Date:
DOI: https://doi.org/10.1023/A:1019855917833