Research Papers: Fuel Combustion

Experimental Study of Transient Hydrodynamics in a Spouted Bed of Polydisperse Particles

[+] Author and Article Information
Ling Bai

Research Center of Fluid
Machinery Engineering and Technology,
Jiangsu University,
Zhenjiang 212013, Jiangsu, China
e-mail: lingbai@ujs.edu.cn

Weidong Shi

School of Mechanical Engineering,
Nantong University,
Nantong 226019, Jiangsu, China
e-mail: wdshi@ujs.edu.cn

Ling Zhou

Research Center of Fluid
Machinery Engineering and Technology,
Jiangsu University,
Zhenjiang 212013, Jiangsu, China
e-mail: lingzhoo@hotmail.com

Lingjie Zhang

Research Center of Fluid
Machinery Engineering and Technology,
Jiangsu University,
Zhenjiang 212013, Jiangsu, China
e-mail: 1435131476@qq.com

Wei Li

Research Center of Fluid
Machinery Engineering and Technology,
Jiangsu University,
Zhenjiang 212013, Jiangsu, China
e-mail: lwjiangda@ujs.edu.cn

Ramesh K. Agarwal

Fellow ASME
Department of Mechanical Engineering and
Materials Science,
Washington University in St. Louis,
St. Louis, MO 63130
e-mail: rka@wustl.edu

1Corresponding authors.

Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received September 19, 2017; final manuscript received February 17, 2018; published online April 13, 2018. Assoc. Editor: Ronald Breault.

J. Energy Resour. Technol 140(8), 082206 (Apr 13, 2018) (8 pages) Paper No: JERT-17-1499; doi: 10.1115/1.4039614 History: Received September 19, 2017; Revised February 17, 2018

In industrial processes such as chemical looping combustion, single-component spouted beds of monodisperse particles are very rarely used but the spouted beds of polydisperse particles have been widely used. The flow characteristics of polydisperse particles are much more complex than the single particle fraction in a fluidized bed. To investigate the gas–solid two-phase flow characteristics of the particles with different diameters in a spouted bed, the segregation and mixing characteristics, bubble morphology, minimum spouting velocity, and pressure fluctuations of the particles with different sizes under different superficial gas velocities are studied experimentally. The results show that higher the initial bed height and larger the volume fraction of the bigger particles, higher is the minimum spouting velocity. Moreover, the magnitude of the minimum spouting velocity increases exponentially with increase in the volume fraction of the bigger particles. At low superficial gas velocity, there is a clear trend of segregation between the particles of different diameters. At moderate superficial gas velocity, the mixing trend among particles of different diameters is enhanced, and the pressure fluctuations in the bed present some degree of regularity. At high superficial gas velocity, the particles of different diameters tend to separate again, the pressure fluctuations become intense, and the particle flow turns into a turbulent state. Furthermore, when the bed becomes stable, the particles of different diameters distribute within the bed with regular stratification.

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Hamilton, M. A. , Whitty, K. J. , and Lighty, J. S. , 2016, “ Numerical Simulation Comparison of Two Reactor Configurations for Chemical Looping Combustion and Chemical Looping With Oxygen Uncoupling,” ASME J. Energy Resour. Technol., 138(4), p. 042213. [CrossRef]
Okasha, F. M. , and Zeidan, E. S. B. , 2013, “ Experimental Study on Propane Combustion in a Novel Spouted Bed Configuration,” Fuel Process. Technol., 116(12), pp. 79–84. [CrossRef]
Geldart, D. , 1973, “ Types of Gas Fluidization,” Powder Technol., 7(5), pp. 285–292. [CrossRef]
Alamolhoda, F. , Zarghami, R. , Sotudeh-Gharebagh, R. , and Mostoufi, N. , 2017, “ Effect of Changes in Particle Size on the Hydrodynamics of Gas-Solid Fluidized Beds Through Wall Vibration,” Powder Technol., 307, pp. 129–136. [CrossRef]
Anabtawi, M. Z. , 2010, “ Minimum Spouting Velocity for Binary Mixture of Particles in Rectangular Spouted Beds,” Can. J. Chem. Eng., 76(1), pp. 132–136. [CrossRef]
Anabtawi, M. Z. , Uysal, B. Z. , and Jumah, R. Y. , 1992, “ Flow Characteristics in a Rectangular Spout-Fluid Bed,” Powder Technol., 69(3), pp. 205–211. [CrossRef]
Wiegel, D. , Eckardt, G. , Priese, F. , and Wolf, B. , 2016, “ In-Line Particle Size Measurement and Agglomeration Detection of Pellet Spouted Bed Coating by Spatial Filter Velocimetry,” Powder Technol., 301, pp. 261–267. [CrossRef]
Al-Raqom, F. , and Klausner, J. F. , 2014, “ Reactivity of Iron/Zirconia Powder in Fluidized Bed Thermochemical Hydrogen Production Reactors,” ASME J. Energy Resour. Technol., 136(1), p. 012201.
Shao, Y. , Zhong, W. , and Yu, A. , 2016, “ Mixing Behavior of Binary and Multi-Diameter Mixtures of Particles in Waste Spouted Beds,” Powder Technol., 304, pp. 73–80. [CrossRef]
He, Y. L. , Qin, S. Z. , Lim, C. J. , and Grace, J. R. , 1994, “ Particle Velocity Profiles and Solid Flow Patterns in Spouted Beds,” Can. J. Chem. Eng., 72(4), pp. 561–568. [CrossRef]
He, Y. L. , Lim, C. J. , Grace, J. R. , Zhu, J. X. , and Qzn, S. Z. , 1994, “ Measurements of Voidage Profiles in Spouted Beds,” Can. J. Chem. Eng., 72(2), pp. 229–234. [CrossRef]
Xu, S. , Wang, S. , Zhang, Z. , Li, C. , and Jiang, X. , 2016, “ Study on Pore Structure of Seaweed Particles After Combustion,” ASME J. Energy Resour. Technol., 138(5), p. 051801. [CrossRef]
San Jose, M. J. , Olazar, M. , Penas, F. J. , and Bilbao, J. , 1994, “ Segregation in Conical Spouted Beds With Binary and Ternary Mixtures of Equidensity Spherical Particles,” Ind. Eng. Chem. Res., 33(7), pp. 1838–1844. [CrossRef]
Hilal, N. , Ghannam, M. T. , and Anabtawi, M. Z. , 2001, “ Effect of Bed Diameter, Distributor and Inserts on Minimum Spouting Velocity,” Chem. Eng. Technol., 24(2), pp. 161–165. [CrossRef]
Peng, Z. , Joshi, J. B. , Moghtaderi, B. , Khan, M. S. , Evans, G. M. , and Doroodchi, E. , 2016, “ Segregation and Dispersion of Binary Solids in Liquid Fluidized Beds: A CFD-DEM Study,” Chem. Eng. Sci., 152, pp. 65–83. [CrossRef]
Sang, H. K. , and Gui, Y. H. , 1999, “ An Analysis of Pressure Drop Fluctuation in a Circulating Spouted Bed,” Korean J. Chem. Eng., 16(5), pp. 677–683. [CrossRef]
Renganathan, T. , and Krishnaiah, K. , 2005, “ Voidage Characteristics and Prediction of Bed Expansion in Liquid–Solid Inverse Spouted Bed,” Chem. Eng. Sci., 60(10), pp. 2545–2555. [CrossRef]
Zhou, L. , Zhang, L. , Shi, W. , Agarwal, R. , and Li, W. , 2018, “ Transient Computational Fluid Dynamics/Discrete Element Method Simulation of Gas–Solid Flow in a Spouted Bed and Its Validation by High-Speed Imaging Experiment,” ASME J. Energy Resour. Technol., 140(1), p. 012206. [CrossRef]
Zhou, L. , Zhang, L. , Bai, L. , Shi, W. , Li, W. , Wang, C. , and Agarwal, R. , 2017, “ Experimental Study and Transient CFD/DEM Simulation in a Fluidized Bed Based on Different Drag Models,” RSC Adv., 7(21), pp. 12764–12774. [CrossRef]
Jones, R. , Pollock, H. M. , Cleaver, J. A. , and Hodges, C. S. , 2002, “ Adhesion Forces Between Glass and Silicon Surfaces in Air Studied by AFM: Effects of Relative Humidity, Particle Size, Roughness, and Surface Treatment,” Langmuir, 18(21), pp. 8045–8055. [CrossRef]
Zhong, W. , Chen, X. , and Zhang, M. , 2006, “ Hydrodynamic Characteristics of Spout-Fluid Bed: Pressure Drop and Minimum Spouting/Spout-Fluidizing Velocity,” Chem. Eng. J., 118(1–2), pp. 37–46. [CrossRef]
Molerus, O. , 1980, “ A Coherent Representation of Pressure Drop in Fixed Beds and of Bed Expansion for Particulate Spouted Beds,” Chem. Eng. Sci., 35(6), pp. 1331–1340. [CrossRef]
Alobaid, F. , Ströhle, J. , and Epple, B. , 2013, “ Extended CFD/DEM Model for the Simulation of Circulating Spouted Bed,” Adv. Powder Technol., 24(1), pp. 403–415. [CrossRef]
Alobaid, F. , and Epple, B. , 2013, “ Improvement, Validation and Application of CFD/DEM Model to Dense Gas–Solid Flow in a Spouted Bed,” Particuology, 11(5), pp. 514–526. [CrossRef]
Srinivas, G. , and Setty, Y. P. , 2014, “ Heat and Mass Transfer Studies in a Batch Spouted Bed Dryer Using Geldart Group D Particles,” Heat Mass Transfer, 50(11), pp. 1535–1542. [CrossRef]
Shi, W. , Zhang, L. , Zhou, L. , and Lu, W. , 2017, “ DEM-Based Numerical Simulation of Unsteady Gas–Solid Two Phase Flow in a Fluidized Bed and Experimental Validation,” J. Drain. Irrig. Mach. Eng., 35(5), pp. 404–409.
King, D. F. , and Harrison, D. , 1980, “ The Minimum Spouting Velocity of a Spouted Bed at Elevated Pressure,” Powder Technol., 26(1), pp. 103–107. [CrossRef]


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Fig. 1

Experimental apparatus: (a) actual experimental apparatus and (b) schematic diagram of the experimental apparatus

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Fig. 2

The test-spouted bed

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Fig. 3

Changes in bubble morphology at different velocities from t = 0 ms to 350 ms (top: v = 0.007 kg/s, middle: v = 0.008 kg/s, bottom: v = 0.009 kg/s)

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Fig. 4

Changes in bubble morphology at different velocities from t = 400 ms to 750 ms (top: v = 0.007 kg/s, middle: v = 0.00 8 kg/s, bottom: v = 0.009 kg/s)

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Fig. 5

Minimum spouting velocity versus the proportion of the particles with large diameter

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Fig. 6

Density of the top layer of the bed along the radial direction

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Fig. 7

Volume fraction of the large particles in the top layer of the bed along the radial direction

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Fig. 8

Pressure fluctuations at z = 2 cm

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Fig. 9

Pressure fluctuations at z = 22 cm

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Fig. 10

Pressure fluctuations at z = 40 cm



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