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Lu H, Ruan H, Poletto M, Guo X, Liu H. Study on fine powder discharged from hoppers modified with insert. POWDER TECHNOL 2023. [DOI: 10.1016/j.powtec.2023.118498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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2
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Tomita Y, Wakamizu Y, Ogata K. The role of entrained air from the top of the aerated bin in the discharge of cohesive powder. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.118057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Mishra I, Molnar MJ, Hwang MY, Shetty A, Hrenya CM. Experimental validation of the extraction of a particle-particle cohesion model (square-force) from simple bulk measurements (defluidization in a rheometer). Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Zhu L, Lu H, Guo X, Liu H. Multi-level arch characteristics and flow enhancement regulation of nano powders discharged from silo. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117492] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Tang J, Lu H, Guo X, Liu H. Discharge characteristics of non-gravity-driven powder in horizontal silos. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Experimental study on the fluidization discharging characteristics of Geldart-C kaolin powders in a blow tank with pulsed gas. ADV POWDER TECHNOL 2022. [DOI: 10.1016/j.apt.2021.11.024] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Guo C, Ya M, Xu Y, Zheng J. Comparison on discharge characteristics of conical and hyperbolic hoppers based on finite element method. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.08.064] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tang J, Lu H, Guo X, Liu H. Static wall pressure distribution characteristics in horizontal silos. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.07.084] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Zhu L, Lu H, Guo X, Liu H. Triggering flow of jammed cohesive granular materials using modulated pulsed airflow. AIChE J 2021. [DOI: 10.1002/aic.17411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Lizhuo Zhu
- Shanghai Engineering Research Center of Coal Gasification East China University of Science and Technology Shanghai China
| | - Haifeng Lu
- Shanghai Engineering Research Center of Coal Gasification East China University of Science and Technology Shanghai China
| | - Xiaolei Guo
- Shanghai Engineering Research Center of Coal Gasification East China University of Science and Technology Shanghai China
| | - Haifeng Liu
- Shanghai Engineering Research Center of Coal Gasification East China University of Science and Technology Shanghai China
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Experimental investigation on air bubble dynamics during fine powder discharge in a silo. ADV POWDER TECHNOL 2021. [DOI: 10.1016/j.apt.2020.11.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Hydrodynamics of Pulsed Fluidized Bed of Ultrafine Powder: Fully Collapsing Fluidized Bed. Processes (Basel) 2020. [DOI: 10.3390/pr8070807] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The processing of fine and ultrafine particles using a fluidized bed is challenging in view of their unpredictable hydrodynamic behavior due to interparticle forces. The use of assisted fluidization techniques in such cases can be effective in improving the bed hydrodynamics. This work investigates the dynamics of pulsed fluidized bed of ultrafine nanosilica subjected to square-wave flow pulsations. The pulse duration used in this study is sufficient to allow the complete collapse of the pulsed fluidized bed between two consecutive flow pulsations. The proposed pulsation strategy is carefully implemented using electronic mass flow controllers with the help of analog output signals from data acquisition system. Given that the different regions of the fluidized bed exhibit varying dynamics, which together contribute to overall bed dynamics, the bed transients in the upper, central, and lower regions of the fluidized bed are monitored using several sensitive pressure transducers located along the height of the bed. The effect of the flow pulsation on the hydrodynamics of the fluidized bed is rigorously characterized. A significant reduction in the minimum fluidization velocity was obtained and an increase in the bed homogeneity was observed due to flow pulsations. The frequency domain analysis of the signals clearly delineated the frequency of the various events occurring during the fluidization.
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