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Thermodynamic Analysis and Synthesis Gas Generation by Chemical-Looping Gasification of Biomass with Nature Hematite as Oxygen Carriers

¹ Key Laboratory of Renewable Energy and Gas Hydrate of Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
² Key Laboratory of Renewable Energy and Gas Hydrate of Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
³ Key Laboratory of Renewable Energy and Gas Hydrate of Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
⁴ Key Laboratory of Renewable Energy and Gas Hydrate of Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
⁵ Key Laboratory of Renewable Energy and Gas Hydrate of Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
⁶ Key Laboratory of Renewable Energy and Gas Hydrate of Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
⁷ Key Laboratory of Renewable Energy and Gas Hydrate of Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China
⁸ Key Laboratory of Renewable Energy and Gas Hydrate of Chinese Academy of Sciences, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, China

Journal of Sustainable Bioenergy Systems·Volume 03 (2013)·Pages 33–39·Published 26 March 2013·DOI10.4236/jsbs.2013.31004

Abstract

Thermodynamic parameters of chemical reactions in the system were carried out through thermodynamic analysis. According to the Gibbs free energy minimization principle of the system, equilibrium composition of the reactions of chemical-looping gasification (CLG) of biomass with natural hematite (Fe 2 O 3 ) as oxygen carrier were analyzed using commercial software of HSC Chemistry 5.1. The feasibility of the CLG of biomass with hematite was experimental verified in a lab-scale bubbling fluidized bed reactor using argon as fluidizing gas. It was indicated the experimental results were consistent with the theoretical analysis. The presence of oxygen carrier gave a significant effect on the biomass conversion and improved the synthesis gas yield obviously. It was observed that the gas content of CO and H 2 was over 70% in CLG of biomass. The reduced hematite particles mainly existed in form of FeO. It was showed that the reduction of natural hematite with biomass proceeds in a stepwise manner from Fe 2 O 3 → Fe 3 O 4 → FeO. Reduction product of natural hematite can be restored the lattice oxygen by oxidation with air.

KeywordsThermodynamicsSynthesis GasNatural HematiteOxygen CarriersBiomass Chemical Looping Gasification

J. Bolhar-Nordenkampf, T. Proll, P. Kolbitsch, et al., “Performance of a NiO-Based Oxygen Carrier for Chemical Looping Combustion and Reforming in a 120 kW Unit,” Energy Procedia, Vol. 1, No. 1, 2009, pp. 19-25. doi:10.1016/j.egypro.2009.01.005
L. F. De Diego, M. Ortiz, F. Garcia-Labiano, et al., “Synthesis Gas Generation by Chemical-Looping Reforming Using a Nibased Oxygen Carrier,” Energy Procedia, Vol. 1, No. 1, 2009, pp. 3-10. doi:10.1016/j.egypro.2009.01.003
K. Tomishige, T. Kimura, J. Nishikawa, et al., “Promoting Effect of the Interaction between Ni and CeO2 on Steam Gasification of Biomass,” Catalysis Communications, Vol. 8, No. 2, 2007, pp. 161-166.
T. Nordgreen, T. Liliedahl and K. Sjostrom, “Metallic Iron as a Tar Breakdown Catalyst Related to Atmospheric, Fluidized Bed Gasification of Biomass,” Fuel, Vol. 85, No. 5-6, 2006, pp. 689-694. doi:10.1016/j.fuel.2005.08.026
C. Courson, E. Makaga, C. Petit, et al., “Development of Ni Catalysts for Gas Production from Biomass Gasification Reactivity in Steam and Dry Reforming,” Catalysis Today, Vol. 63, No. 2, 2000, pp. 427-437. doi:10.1016/S0920-5861(00)00488-0
F. He, Z. Huang, H. B. Li, et al., “Biomass Direct Chemical Looping Conversion in a Fluidized Bed Reactor with Natural Hematite as an Oxygen Carrier,” Proceedings of the 2011 Asia-Pacific Power and Energy Engineering Conference, Wuhan, 25-28 March 2011.
Y. Cao and W.-P. Pan, “Investigation of Chemical Looping Combustion by Solid Fuels. 1. Process Analysis,” Energy & Fuels, Vol. 20, No. 5, 2006, pp. 1836-1844. doi:10.1021/ef050228d
B. Acharya, A. Dutta and P. Basu, “Chemical-Looping Gasification of Biomass for Hydrogen-Enriched Gas Production with In-Process Carbon Dioxide Capture,” Energy Fuel, Vol. 23, No. 10, 2009, pp. 5077-5083.
A. Abad, J. Adanez, F. Garcia-Labiano, et al., “Mapping of the Range of Operational Conditions for Cu-, Fe-, and Ni-Based Oxygen Carriers in Chemical-Looping Combustion,” Chemical Engineering Science, Vol. 62, No. 1-2, 2007, pp. 533-549. doi:10.1016/j.ces.2006.09.019
L. H. Shen, J. H. Wu, J. Xiao, et al., “Chemical-Looping Combustion of Biomass in a 10 kWth React or with Iron Oxide as an Oxygen Carrier,” Energy and Fuels, Vol. 23, No. 5, 2009, pp. 2498-2505. doi:10.1021/ef900033n
H. Leion, E. Jerndal, B. M. Steenari, et al., “Solid Fuels in Chemical-Looping Combustion Using Oxide Scale and Unprocessed Iron Ore as Oxygen Carriers,” Fuel, Vol. 88, No. 10, 2009, pp. 1945-1954. doi:10.1016/j.fuel.2009.03.033

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Thermodynamic Analysis and Synthesis Gas Generation by Chemical-Looping Gasification of Biomass with Nature Hematite as Oxygen Carriers

Abstract

References (12)