Abstract
For mixtures of carbon materials and an inert filler, dependences of the characteristics of the filtration combustion wave on the gaseous oxidizer supply rate at a fuel content in the mixture of less than 7 wt % were obtained. The existence of a lower concentration limit for a steady-state filtration combustion wave was established. It was demonstrated that at a given intensity of heat loss, the concentration limits are determined by the reactivity of the carbon material and the oxidizer supply rate. At the effective coefficient of heat loss α = 8 W/(m2 K), effective conductivity of mixture material λ = 2 W/(m K), and air supply rate G = 0.1 m/s, the lowest fraction of carbon in the mixture at which combustion is still possible was 4.5 wt % for carbon-carbon composite, 2.5 wt % for activated birch coal, and 2.0 wt % for birch coal, the most reactive kind of carbon.
Similar content being viewed by others
References
Propagation of Thermal Waves in Heterogeneous Media, A Collection of Works, Ed. by Yu. S. Matros (Nauka, Novosibirsk, 1988) [in Russian].
A. P. Aldushin and A. G. Merzhanov, Propagation of Thermal Waves in Heterogeneous Media, A Collection of Works, Ed. by Yu. S. Matros (Nauka, Novosibirsk, 1988), p. 9 [in Russian].
D. A. Schult, B. J. Matkowsky, V. A. Volpert, and A. C. Fernandez-Pello, Combust. Flame 104, 1 (1996).
I. Y. Akkutlu and Y. C. Yortsos, Combust. Flame 134, 229 (2003).
E. A. Salganskii, V. M. Kislov, S. V. Glazov, et al., Fiz. Goreniya Vzryva 44(3), 30 (2008) [Combust. Explos., Shock Waves 44, 273 (2008)].
A. V. Becker, E. V. Polianczyk, N. N. Volkova, and G. B. Manelis, Teor. Osn. Khim. Tekhnol. 38, 539 (2004) [Theor. Found. Chem. Eng. 38, 510 (2004)].
A. S. Predvoditelev, L. N. Khitrin, O. A. Tsukhanova, et al., Carbon Combustion (Akad. Nauk SSSR, Moscow, 1949) [in Russian].
Reactions of Carbon with Gases, Ed. by E. S. Golovina (Inostrannaya Literatura, Moscow, 1963) [in Russian].
I. M. Bews, A. N. Hayhurst, S. M. Richardson, and S. G. Taylor, Combust. Flame 124, 231 (2001).
N. N. Volkova, E. A. Salganskii, A. A. Zhirnov, and G. B. Manelis, Khim. Fiz. 26(2), 53 (2007).
B. S. Haynes, Combust. Flame 126, 1421 (2001).
I. I. Amelin, N. N. Volkova, A. A. Zhirnov, et al., Dokl. Akad. Nauk 421, 65 (2008).
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © I.I. Amelin, N.N. Volkova, A.A. Zhirnov, A.P. Alekseev, A.F. Zholudev, E.V. Polianczyk, G.B. Manelis, 2010, published in Khimicheskaya Fizika, 2010, Vol. 29, No. 3, pp. 76–82.
Rights and permissions
About this article
Cite this article
Amelin, I.I., Volkova, N.N., Zhirnov, A.A. et al. Lower concentration limit of carbon filtration combustion. Russ. J. Phys. Chem. B 4, 265–270 (2010). https://doi.org/10.1134/S1990793110020120
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S1990793110020120