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Received December 13, 2006
Accepted October 5, 2007
- This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Biomass gasification in internal circulating fluidized beds: a thermodynamic predictive tool
1European Commission, Joint Research Center, Institute for Energy JRC/IE, P.O. Box 2 1755 ZG Petten, Netherlands 2Istituto di Ricerche sulla Combustione, Consiglio Nazionale delle Ricerche, Napoli, Netherlands 3Institute of Chemical Process Fundamentals, Academy of Sciences, Praha, Netherlands
miccio@irc.cnr.it
Korean Journal of Chemical Engineering, July 2008, 25(4), 721-726(6), 10.1007/s11814-008-0118-y
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Abstract
The paper deals with a high efficiency process for biomass gasification based on the concept of the internal circulating fluidized bed (ICFB). A modeling tool has been developed for the prediction of theoretical values for the main species in a syngas produced by ICFB gasification. A thermodynamic sub-model has been utilized and integrated with a simplified lumped model of the gasifier. The model predicts H2 concentration up to 61% on water free basis. The comparison with calculations for one stage gasification demonstrates ICFB process is preferable, no dilution with inert gas occurring. Among the studied variables, the steam/fuel ratio and the fuel moisture exert the largest influence on the hydrogen yield with percentage changes up to 15% in the explored range of the variables.
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Devi L, Ptasinski KJ, Janssen FJJG, Biomass Bioenerg., 24(2), 125 (2003)
Chirone R, Massimilla L, Salatino P, Prog. Energy Combust. Sci., 17, 297 (1991)
Miccio F, Moersch O, Spliethoff H, Hein KRG, Fuel, 78(12), 1473 (1999)
Hofbauer H, Veronik G, Fleck T, Rauch R, Mackinger H, Fercher E, Proceedings of developments in thermochemical biomass conversion, Banff, 2, 1016 (1997)
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Kunii D, Levenspiel O, Fluidization engineering, Butterworth-Heinemann, Boston, 61 (1991)