Model of Vapor—Air Gasification of a Solid Fuel in a Filtration Mode |
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Authors: | E A Salganskii V P Fursov S V Glazov M V Salganskaya G B Manelis |
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Affiliation: | (1) Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, 142432, Russia |
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Abstract: | A two-temperature mathematical model of steady filtration combustion of a solid fuel in open systems is proposed. Air or a
mixture of air with water vapors is considered as a gaseous oxidizer. The model takes into account that the heat capacities
of the phases depend on temperature and composition and that the reactor length is finite and allows obtaining the composition
of gaseous combustion products. Calculated results on gasification of a mixture of carbon with an inert component are presented.
It is demonstrated that thermodynamic calculations are important for obtaining the upper estimate of gasification efficiency.
Even a sufficiently long reactor becomes “short” in the regime of transient combustion waves, which results in more intense
entrainment of heat by combustion products and, as a consequence, in lower efficiency of the process.
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Translated from Fizika Goreniya i Vzryva, Vol. 42, No. 1, pp. 65–72, January–February, 2006. |
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Keywords: | superadiabatic combustion mode filtration combustion gasification of a solid fuel heat wave porous medium |
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