A novel study on biomassair gasification using a horizontal entrained-flow gasifier has been conducted. The use of a horizontal entrained-flow gasifier reactor was employed to assess the effect of the gasifier reactor orientation on the gasification process. The gasification experiments were conducted at 800℃ and equivalence ratio of 0.23 while maintaining gas hourly space velocity (GHSV) of 8000 h-1. Preparation and characterisation of wood powder were performed using classical methods. The research findings showed that maximum fuel conversion and cold gas efficiency using a horizontal entrained-flow gasifier were 99% and 70% respectively compared to 91% and 62% respectively of the vertical design. Moreover, the gasifier length can also be reduced from the common 1000 - 2000 mm to 500 mm. In general, the results of this study suggest that there exists a sensitivity to the gasifier orientation on the overall gasification process.
References
[1]
Zhao, Y.J., Sun, S.Z., Zhou, H., Sun, R., Tian, H.M., Luan, J.Y. and Qian, J.A. (2010) Experimental Study on Sawdust Air Gasification in an Entrained-Flow Reactor. Fuel Processing Technology, 91, 910-914. https://doi.org/10.1016/j.fuproc.2010.01.012
[2]
Hernandez, J.J., Aranda-Almansa, G. and Bula, A. (2010) Gasification of Biomass Wastes in an Entrained Flow Gasifier: Effect of the Particle Size and the Residence Time. Fuel Processing Technology, 91, 681-692.
https://doi.org/10.1016/j.fuproc.2010.01.018
[3]
Zhou, J.S., Chen, Q., Zhao, H., Cao, X.W., Mei, Q.F., Luo, Z.Y. and Cen, K.F. (2009) Biomass-Oxygen Gasification in a High-Temperature Entrained-Flow Gasifier. Biotechnology Advances, 27, 606-611.
https://doi.org/10.1016/j.biotechadv.2009.04.011
[4]
Lapuerta, M., Hernandez, J.J., Pazo, A. and Lopez, J. (2008) Gasification and Co-Gasification of Biomass Wastes: Effect of the Biomass Origin and the Gasifier Operating Conditions. Fuel Processing Technology, 89, 828-837.
https://doi.org/10.1016/j.fuproc.2008.02.001
[5]
Kajitani, S., Suzuki, N., Ashizawa, M. and Hara, S. (2006) CO2 Gasification Rate Analysis of Coal Char in Entrained Flow Coal Gasifier. Fuel, 85, 163-169.
https://doi.org/10.1016/j.fuel.2005.07.024
[6]
Zhao, Y.J., Sun, S.Z., Tian, H.M., Qian, J., Su, F.M. and Ling, F. (2009) Characteristics of Rice Husk Gasification in an Entrained Flow Reactor. Bioresource Technology, 100, 6040-6044. https://doi.org/10.1016/j.biortech.2009.06.030
[7]
Kobayashi, N., Tanaka, M., Piao, G., Kobayashi, J., Hatano, S., Itaya, Y. and Mori, S. (2009) High Temperature Air-Blown Woody Biomass Gasification Model for the Estimation of an Entrained Down-Flow Gasifier. Waste Management, 29, 245-251.
https://doi.org/10.1016/j.wasman.2008.04.014
[8]
Qin, K., Lin, W.G., Jensen, P.A. and Jensen, A.D. (2012) High-Temperature Entrained Flow Gasification of Biomass. Fuel, 93, 589-600.
https://doi.org/10.1016/j.fuel.2011.10.063
[9]
BS-EN:15413 (2011) Solid Recovered Fuels—Methods for the Preparation of the Test Sample from the Laboratory Sample.
[10]
BS-EN:1477-3 (2009) Solid Biofuels—Determination of Moisture Content—Oven Dry Method Part 3: Moisture in General Analysis Sample.
[11]
BS-EN 15403 (2011) Solid Recovered Fuels—Determination of Ash Content.
[12]
CEN/TS 15148 (2009) Solid Biofuels—Determination of the Content of Volatile Matter.
[13]
BS-ISO 1928 (2009) Solid Mineral Fuels—Determination of Gross Calorific Value by the Bomb Calorimetric Method and Calculation of Net Calorific Value.
[14]
BS 1016 (1996) Analysis and Testing of Coal and Coke—Part 106: Ultimate Analysis of Coal and Coke.
[15]
CEN/TS 15439 (2006) Biomass Gasification-Tar and Particles in Product Gases-Sampling and Analysis.
[16]
Verenum, C.C.E., BGT, DTI, ECN, KTH, SenterNovem, Fraunhofer Institute and VTT (2005) Sampling and Analysis of Tar and Particles in Biomass Producer Gases. Technical Report.
[17]
Malhotra, G. (2009) Effect of Different Process Conditions on Pyrolysis Products. MSc, Cardiff University, Cardiff.
[18]
Hernandez, J.J., Aranda, G., Barba, J. and Mendoza, J.M. (2012) Effect of Steam Content in the Air-Steam Flow on Biomass Entrained Flow Gasification. Fuel Processing Technology, 99, 43-55. https://doi.org/10.1016/j.fuproc.2012.01.030