Share This Article:

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

Abstract Full-Text HTML XML Download Download as PDF (Size:818KB) PP. 33-39
DOI: 10.4236/jsbs.2013.31004    3,416 Downloads   7,174 Views   Citations

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 (Fe2O3) 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 H2 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 Fe2O3 Fe3O4 FeO. Reduction product of natural hematite can be restored the lattice oxygen by oxidation with air.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Z. Huang, F. He, A. Zheng, K. Zhao, S. Chang, X. Li, H. Li and Z. Zhao, "Thermodynamic Analysis and Synthesis Gas Generation by Chemical-Looping Gasification of Biomass with Nature Hematite as Oxygen Carriers," Journal of Sustainable Bioenergy Systems, Vol. 3 No. 1, 2013, pp. 33-39. doi: 10.4236/jsbs.2013.31004.

References

[1] 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
[2] 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
[3] 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.
[4] 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
[5] 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
[6] 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.
[7] 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
[8] 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.
[9] 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
[10] 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
[11] 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
[12] A. Rubel, K. L. Liu, J. Neathery, et al., “Oxygen Carriers for Chemical Looping Combustion of Solid Fuels,” Fuel, Vol. 88, No. 5, 2009, pp. 876-884. doi:10.1016/j.fuel.2008.11.006

  
comments powered by Disqus

Copyright © 2019 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.