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Correlation for predicting minimum fluidization velocity with different size distributions and bed inventories at elevated temperature in gas-solid fluidized bed. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2022.103483] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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2
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Hydrodynamic behaviors of a spouted fluidized bed with a conical distributor and auxiliary inlets for the production of polysilicon with wide-size-distribution particles. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2021.117069] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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3
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Hosseini SH, Moradkhani MA, Rasteh M, Rahimi M. New Smart Models for Minimum Fluidization Velocity Forecasting in the Tapered Fluidized Beds Based on Particle Size Distribution. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c02682] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | | | - Mojtaba Rasteh
- Department of Chemical Engineering, Hamedan University of Technology, Hamedan 65155-579, Iran
| | - Masoud Rahimi
- Department of Chemical Engineering, Razi University, Kermanshah 67149, Iran
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Korkerd K, Soanuch C, Gidaspow D, Piumsomboon P, Chalermsinsuwan B. Artificial neural network model for predicting minimum fluidization velocity and maximum pressure drop of gas fluidized bed with different particle size distributions. SOUTH AFRICAN JOURNAL OF CHEMICAL ENGINEERING 2021. [DOI: 10.1016/j.sajce.2021.04.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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5
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Modeling of the Minimum Fluidization Velocity and the Incipient Fluidization Pressure Drop in a Conical Fluidized Bed with Negative Pressure. APPLIED SCIENCES-BASEL 2020. [DOI: 10.3390/app10248764] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The modeling of the minimum fluidization velocity (U0mf) and the incipient fluidization pressure drop (ΔPmf) is a valuable research topic in the fluidization field. In this paper, first, a series of experiments are carried out by changing the particle size and material mass to explore their effects on U0mf and ΔPmf. Then, an Ergun equation modifying method and the dimensional analysis method are used to obtain the modeling correlations of U0mf and ΔPmf by fitting the experimental data, and the advantages and disadvantages of the two methods are discussed. The experimental results show that U0mf increases significantly with increasing particle size but has little relationship with the material mass; ΔPmf increases significantly with increasing material mass but has little relationship with the particle size. Experiments with small particles show a significant increase at large superficial gas velocity; we propose a conjecture that the particles’ collision with the fluidization chamber’s top surface causes this phenomenon. The fitting accuracy of the modified Ergun equation is lower than that of the dimensionless model. When using the Ergun equation modifying method, it is deduced that the gas drag force is approximately 0.8995 times the material total weight at the incipient fluidized state.
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Li C, Wang W, Guo X, Duan J. Fluidization characteristics of wide-size-distribution particles in a gas-solid fluidized bed reactor. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2020. [DOI: 10.1515/ijcre-2020-0100] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Fluidization characteristics of wide-size-distribution particles in the gas-solid fluidized bed reactor are investigated by applying experiment and computational fluid dynamics (CFD) methods. In this study, three types of narrow-cut particles and two sets of wide-size-distribution particles are used. A model considering particle size distribution is developed in the Eulerian frame, and good agreement between numerical results and experimental data is observed. The particle size distribution has an important effect on the average bed voidage. The axial particle diameter profiles along bed height have a “S” type feature. Minimum fluidization velocity is determined from the standard deviation of pressure fluctuations and bubble dynamics are analyzed based on power spectra. Results indicate that fine particle composition can reduce the minimum fluidization velocity of wide-size-distribution particle system and the bubble diameter in the fluidized bed.
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Affiliation(s)
- Chaojie Li
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering , Qingdao University of Science and Technology , Qingdao , China
| | - Weiwen Wang
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering , Qingdao University of Science and Technology , Qingdao , China
| | - Xiuling Guo
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering , Qingdao University of Science and Technology , Qingdao , China
| | - Jihai Duan
- State Key Laboratory Base of Eco-Chemical Engineering, College of Chemical Engineering , Qingdao University of Science and Technology , Qingdao , China
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Yan L, Liu H, Li F, Liu J. Dynamic characteristics of the large particles inside the fluidized bed with an inclined air distribution plate. POWDER TECHNOL 2020. [DOI: 10.1016/j.powtec.2020.03.069] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Minimum fluidization velocity of particles with different size distributions at elevated pressures and temperatures. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2020.115555] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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9
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Hosseini S, Rezaei M, Bag-Mohammadi M, Karami M, Moradkhani M, Panahi M, Olazar M. Estimation of the minimum spouting velocity in shallow spouted beds by intelligent approaches: Study of fine and coarse particles. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.06.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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10
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Shao Y, Gu J, Zhong W, Yu A. Determination of minimum fluidization velocity in fluidized bed at elevated pressures and temperatures using CFD simulations. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.03.039] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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