Investigation of the oxidation zone in a biomass two-stage downdraft gasifier
| Autor: | Gerun, Luc, Bellettre, Jérôme, Tazerout, Mohand, Gobel, B, Henriksen, U |
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| Přispěvatelé: | Mines Nantes (Mines Nantes), Laboratoire de génie des procédés - environnement - agroalimentaire (GEPEA), Mines Nantes (Mines Nantes)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Centre National de la Recherche Scientifique (CNRS), Kjelstrup, S and Hustad, JE and Gundersen, T and Rosjorde, A and Tsatsaronis |
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: | |
| Zdroj: | Proceedings of ECOS 2005 Proceedings of ECOS 2005, Vols 1-3: SHAPING OUR FUTURE ENERGY SYSTEMS Proceedings of ECOS 2005, Vols 1-3: SHAPING OUR FUTURE ENERGY SYSTEMS, 2005, Unknown, pp.1525-1532 |
| Popis: | 18th International Conference on Efficiency, Cost, Optimization, Simulation and Environmental Impact of Energy Systems (ECOS 2005), Trondheim, NORWAY, JUN 20-22, 2005; International audience; The partial combustion in a two-stage downdraft gasifier is critical for the process optimisation. Flame temperature and residence time of gas in the hot zone are indeed determining for tar cracking, the major issue in gasification. This paper presents a CFD model of the oxidation zone. Chemical reactions, including tar cracking, are treated by the ''EDC'' model (homogeneous reactions). Fluid flows are turbulent and simulated by the k-epsilon RNG turbulence model. The validation of the model is done with the DTU 100 kW two-stage gasifier. Results fit satisfactory the data, regarding the temperature profile. |
| Databáze: | OpenAIRE |
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