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Staged catalytic gasification/steam reforming of pyrolysis oil / Guus van Rossum in Industrial & engineering chemistry research, Vol. 48 N° 12 (Juin 2009) 

Public ISBD [article]  in Industrial & engineering chemistry research > Vol. 48 N° 12 (Juin 2009) . - pp. 5857–5866 Titre : Staged catalytic gasification/steam reforming of pyrolysis oil Type de document : texte imprimé Auteurs : Guus van Rossum, Auteur ; Sascha R. A. Kersten, Auteur ; Wim P.M. van Swaaij, Auteur Année de publication : 2009 Article en page(s) : pp. 5857–5866 Note générale : Chemical engineering Langues : Anglais (eng) Mots-clés : Gasification/steam  reforming  Pyrolysis  oil¨Staged  reactor  MethaneC2−C3  free  syngas Résumé : Gasification/steam reforming of pyrolysis oil was studied in a staged reactor concept, which consisted of an inert fluidized bed and a catalytic fixed bed. Methane and C2−C3 free syngas is produced at a single temperature around 800 °C at atmospheric pressure. By lowering the temperature of the fluidized bed (432−500 °C), its function is changed from a gasifier to an evaporator, and in this way the subsequent catalyst bed actually sees vaporized pyrolysis oil compounds (instead of a fuel gas), which it can more readily convert to syngas. However, the temperature of the fixed bed cannot be too low (min 700 °C) to avoid excessive carbon deposition. System calculations show that when pressurized (30 bar) pyrolysis oil gasification/reforming is considered, the catalytic exit bed temperature should be high (900−1000 °C) to reach sufficient enough methane conversion when syngas is the desired product. When only steam is added at elevated pressure, the H2/CO ratio readily increases, which is desired for hydrogen production. For other applications (e.g., Fischer−Tropsch), carbon dioxide probably has to be recycled to keep the H2/CO ratio around 2−3. The lower heating value efficiency of pyrolysis oil gasification/reforming is comparable to the lower end of the reported range of commercial methane steam reforming. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900194j [article] Staged catalytic gasification/steam reforming of pyrolysis oil [texte imprimé] / Guus van Rossum, Auteur ; Sascha R. A. Kersten, Auteur ; Wim P.M. van Swaaij, Auteur . - 2009 . - pp. 5857–5866. Chemical engineering Langues : Anglais (eng) in Industrial & engineering chemistry research > Vol. 48 N° 12 (Juin 2009) . - pp. 5857–5866 Mots-clés : Gasification/steam  reforming  Pyrolysis  oil¨Staged  reactor  MethaneC2−C3  free  syngas Résumé : Gasification/steam reforming of pyrolysis oil was studied in a staged reactor concept, which consisted of an inert fluidized bed and a catalytic fixed bed. Methane and C2−C3 free syngas is produced at a single temperature around 800 °C at atmospheric pressure. By lowering the temperature of the fluidized bed (432−500 °C), its function is changed from a gasifier to an evaporator, and in this way the subsequent catalyst bed actually sees vaporized pyrolysis oil compounds (instead of a fuel gas), which it can more readily convert to syngas. However, the temperature of the fixed bed cannot be too low (min 700 °C) to avoid excessive carbon deposition. System calculations show that when pressurized (30 bar) pyrolysis oil gasification/reforming is considered, the catalytic exit bed temperature should be high (900−1000 °C) to reach sufficient enough methane conversion when syngas is the desired product. When only steam is added at elevated pressure, the H2/CO ratio readily increases, which is desired for hydrogen production. For other applications (e.g., Fischer−Tropsch), carbon dioxide probably has to be recycled to keep the H2/CO ratio around 2−3. The lower heating value efficiency of pyrolysis oil gasification/reforming is comparable to the lower end of the reported range of commercial methane steam reforming. En ligne : http://pubs.acs.org/doi/abs/10.1021/ie900194j