Circulating fluidized bed in chemical-looping combustion (CLC) is a recent technology that provides great advantage for gas–solid interaction and efficiency. In order to obtain a thorough understanding of this technology and to assess its effectiveness for industrial scale deployment, numerical simulations are conducted. Computational fluid dynamics (CFD) simulations are performed with dense discrete phase model (DDPM) to simulate the gas–solid interactions. CFD commercial software ansysfluent is used for the simulations. Two bed materials of different particle density and diameter, namely the molochite and Fe100, are used in studying the hydrodynamics and particle behavior in a fuel reactor corresponding to the experimental setup of Haider et al. (2016, “A Hydrodynamic Study of a Fast-Bed Dual Circulating Fluidized Bed for Chemical Looping Combustion,” Energy Technol., 4(10), pp. 1254–1262.) at Cranfield University in the UK. Both the simulations show satisfactory agreement with the experimental data for both the static pressure and volume fraction at various heights above the gas inlet in the reactor. It is found that an appropriate drag law should be used in the simulation depending on the particle size and flow conditions in order to obtain accurate results. The simulations demonstrate the ability of CFD/DDPM to accurately capture the physics of circulating fluidized bed-based CLC process at pilot scale which can be extended to industrial scale projects.
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November 2018
Research-Article
Transient Cold Flow Simulation of Fast Fluidized Bed Fuel Reactors for Chemical-Looping Combustion
Mengqiao Yang,
Mengqiao Yang
Department of Mechanical Engineering
and Materials Science,
Washington University in St. Louis,
1 Brookings Drive,
St. Louis, MO 63130
e-mail: mengqiao@wustl.edu
and Materials Science,
Washington University in St. Louis,
1 Brookings Drive,
St. Louis, MO 63130
e-mail: mengqiao@wustl.edu
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Subhodeep Banerjee,
Subhodeep Banerjee
Multiphase Flow Science Group,
National Energy Technology Laboratory,
3610 Collins Ferry Road,
Morgantown, WV 26505
e-mail: subhodeep.banerjee@netl.doe.gov
National Energy Technology Laboratory,
3610 Collins Ferry Road,
Morgantown, WV 26505
e-mail: subhodeep.banerjee@netl.doe.gov
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Ramesh K. Agarwal
Ramesh K. Agarwal
Department of Mechanical Engineering
and Materials Science,
Washington University in St. Louis,
St. Louis, MO 63130
e-mail: rka@wustl.edu
and Materials Science,
Washington University in St. Louis,
1 Brookings Drive
,St. Louis, MO 63130
e-mail: rka@wustl.edu
Search for other works by this author on:
Mengqiao Yang
Department of Mechanical Engineering
and Materials Science,
Washington University in St. Louis,
1 Brookings Drive,
St. Louis, MO 63130
e-mail: mengqiao@wustl.edu
and Materials Science,
Washington University in St. Louis,
1 Brookings Drive,
St. Louis, MO 63130
e-mail: mengqiao@wustl.edu
Subhodeep Banerjee
Multiphase Flow Science Group,
National Energy Technology Laboratory,
3610 Collins Ferry Road,
Morgantown, WV 26505
e-mail: subhodeep.banerjee@netl.doe.gov
National Energy Technology Laboratory,
3610 Collins Ferry Road,
Morgantown, WV 26505
e-mail: subhodeep.banerjee@netl.doe.gov
Ramesh K. Agarwal
Department of Mechanical Engineering
and Materials Science,
Washington University in St. Louis,
St. Louis, MO 63130
e-mail: rka@wustl.edu
and Materials Science,
Washington University in St. Louis,
1 Brookings Drive
,St. Louis, MO 63130
e-mail: rka@wustl.edu
1Corresponding author.
Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received April 16, 2017; final manuscript received January 31, 2018; published online June 26, 2018. Editor: Hameed Metghalchi.
J. Energy Resour. Technol. Nov 2018, 140(11): 112203 (7 pages)
Published Online: June 26, 2018
Article history
Received:
April 16, 2017
Revised:
January 31, 2018
Citation
Yang, M., Banerjee, S., and Agarwal, R. K. (June 26, 2018). "Transient Cold Flow Simulation of Fast Fluidized Bed Fuel Reactors for Chemical-Looping Combustion." ASME. J. Energy Resour. Technol. November 2018; 140(11): 112203. https://doi.org/10.1115/1.4039415
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