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Received May 29, 2014
Accepted June 27, 2014
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Application of Hilbert-Huang transformation in fluidized bed with two-component (biomass particles and quartz sands) mixing flow
Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China
zzhong@seu.edu.cn
Korean Journal of Chemical Engineering, January 2015, 32(1), 43-50(8), 10.1007/s11814-014-0181-5
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Abstract
Hilbert-Huang transformation was used to investigate the nonlinear characteristics of two-component (biomass particles and quartz sand) mixing flow by analyzing the pressure fluctuation signals in fluidized bed. Based on empirical mode decomposition (EMD), the Hilbert-Huang spectra in bubbling and slugging flow patterns were obtained and analyzed. In bubbling flow pattern, compared with one-component (quartz sand) flow, the energy of two-component_x000D_
mixing flow is lower in 0-5 Hz and higher in 40-50 Hz. In slugging flow pattern, the energy in pressure fluctuation mainly lies in 0-5 Hz. and the effect of biomass particles on the Hilbert-Huang spectrum is not very obvious. Compared with traditional power spectral density (PSD), HHT is much more suitable for investigating pressure fluctuation signals in fluidized beds.
Keywords
References
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Mante OD, Agblevor FA, McClung R, Fuel, 108, 451 (2013)
Zhang WH, Li XG, Chem. Eng. Sci., 64(5), 1009 (2009)
Ding H, Huang ZY, Song ZH, Yan Y, Flow Measurement and Instrumentation, 18, 37 (2007)
Wang CH, Zhong ZP, E JQ, Powder Technol., 219, 20 (2012)
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Luo LJ, Yan Y, Xie P, Sun JW, Xu YY, Yuan JQ, Chem. Eng. J., 181, 570 (2012)
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Huang NE, Shen Z, Long SR, Wu MC, Shih HH, Zheng Q, Yen NC, Tung CC, Liu HH, Proceedings of the Royal Society of London, Series A:Mathematical, Physical and Engineering Sciences, 454, 903 (1998)
Yang ZS, Yu ZH, Xie C, Huang YF, Measurement, 47, 14 (2014)
Wang XP, Journal of Chemical Engineering of Chinese Universities, 19, 474 (2005)
Liu MX, Zhang YM, Bi HT, Grace JR, Zhu YD, Chem. Eng. Sci., 65(11), 3485 (2010)
