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Study about the kinetic processes of biomass steam gasification

Abstract : Modelling approaches of biomass steam gasification are investigated that take into account both chemical and physical kinetic limitations. The gas phase can be described by two independent reactions: (i) the steam reforming of CH$_4$ , which is kinetically limited under the operating conditions (1073 < T < 1273 K, p = 1 bar), (ii) the water-gas shift reaction, which would be close to equilibrium under the operating conditions (1073 < T < 1273 K, p = 1 bar). Concerning solid, a time scale analysis of the main phenomena has been performed. For particles of 500 lm, the transformation can be seen as two successive steps: (i) pyrolysis of biomass, which is both chemically and heat-transfer controlled; (ii) steam gasification of residue, which is chemically controlled.
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Capucine Dupont, Guillaume Boissonnet, Jean-Marie Seiler, Paola Gauthier, Daniel Schweich. Study about the kinetic processes of biomass steam gasification. Fuel, Elsevier, 2006, 86 (1-2), pp.32-40. ⟨10.1016/j.fuel.2006.06.011⟩. ⟨cea-02356025⟩

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