Commenced in January 2007
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Edition: International
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Effect of Equivalence Ratio on Performance of Fluidized Bed Gasifier Run with Sized Biomass

Authors: J. P. Makwana, A. K. Joshi, Rajesh N. Patel, Darshil Patel

Abstract:

Recently, fluidized bed gasification becomes an attractive technology for power generation due to its higher efficiency. The main objective pursued in this work is to investigate the producer gas production potential from sized biomass (sawdust and pigeon pea) by applying the air gasification technique. The size of the biomass selected for the study was in the range of 0.40-0.84 mm. An experimental study was conducted using a fluidized bed gasifier with 210 mm diameter and 1600 mm height. During the experiments, the fuel properties and the effects of operating parameters such as gasification temperatures 700 to 900 °C, equivalence ratio 0.16 to 0.46 were studied. It was concluded that substantial amounts of producer gas (up to 1110 kcal/m3) could be produced utilizing biomass such as sawdust and pigeon pea by applying this fluidization technique. For both samples, the rise of temperature till 900 °C and equivalence ratio of 0.4 favored further gasification reactions and resulted into producer gas with calorific value 1110 kcal/m3.

Keywords: Sized biomass, fluidized bed gasifier, equivalence ratio, temperature profile, gas composition.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1124585

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References:


[1] Chuah, T.G.; Wan Azlina, A.G.K.; Robiah, Y.; Omar, R. Biomass as the renewable energy sources in Malaysia. Int. J. Green Ener. 2006, 3, 323-346.
[2] Bridgwater, A.V. Renewable fuels and chemicals by thermal processing of biomass. J. Chem.Eng. 2003, 91, 87-102.
[3] Lapuerta, M.; Hernandez, J.J.; Pozoz, A.; Lopez, J. Gasification and co-gasification of biomass wastes: Effect of the biomass origin and the gasifier operating conditions. Fuel Process. Technol. 2008, 89(9), 828-837
[4] Xiao, R.; Jin, B.; Zhou, H.; Zhong Z.; Zhang, M. Air gasification of polyproplynen plastic waste in fluidized bed gasifier. Energy Convers. Manage. 2007, 48, 778-786.
[5] Gonzalez, J.F.; Roman, S.; Bragado D.; Calderon, M. Investigation on the reactions influencing biomass air and air/steam gasification for hydrogen production. Fuel Process. Technol. 2008, 89(8), 764-772
[6] Bridgwater, A.V. The technical and economical feasibility of biomass gasification for power generation. Fuel, 1995, 74(5), 631-653.
[7] Lim, M.T.; Alimuddin, Z. Bubbling fluidized bed biomass gasification—Performance, process findings and energy analysis. Renewable Energy 2008, 33, 2339-2343.
[8] Ravelli, S.; Perdichizzi, A.; Barigozzi, G. Descriptions, application and numerical modeling of bubbling fluiidzed bed combustion in waste-to-energy plants. Prog. Energy Combust. Sci. 2008, 34, 224–253.
[9] Dermibas, A. Gaseous products from biomass by pyrolysis and gasification: Effects of catalyst on hydrogen yield. Energy Convers. Manage. 2002, 43, 897-909.
[10] Warnecke, R. Gasification of biomasss: comparison of fixed bed and fluidized bed. Biomass Bioenergy 2000, 18, 489-497.
[11] Gil, J.; Corella, J.; Aznar, M.P.; Caballero, M.A. Biomass gasification in atmospheric and bubbling fluidized bed: effect of type gasifying agent on the product distribution. Biomass Bioenergy 1999, 17, 389-403.
[12] Jenkins B, “Downdraft gasification characteristics of California residue-derived fuels”, Ph.D. thesis, University of California, Davis 1980.
[13] Ergudenler A Gasification of wheat straw in a dual-distributor type fluidized bed reactor. PhD. thesis, Technical University of Nova Scotia, Halifax, Nova Scotia, Canada 1993.
[14] Mansaray K, Ghaly A, Al-Taweelb A, Hamdullahpur F and Ugursal V “Air gasification of rice husk in a dual distributor type fluidized bed gasifier Biomass and Bioenergy,17,1999,315-332.
[15] Lv, P.M.; Xiong, Z.; Chang, H.J.; Chen, Y.; Zhu, J.X. An experimental study on biomass air steam gasification in a fluidized bed. Bioresour. Technol. 2004, 95, 95-101