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Sung WC, Jung HS, Bae JW, Kim JY, Lee DH. Segregation phenomena of binary solids in a pulsed fluidized bed. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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2
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Chen S, Jiarui W, Simin W, Jian W. Investigation of flow behaviors in a fluidized bed reactor with binary mixture of Geldart-A and B particles. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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3
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Wu SM, Straiton B, Zong Y, Marashdeh Q, Li L, Xu Z, Zhao L. A new measurement method for mixing and segregation of binary mixture by combining gas cutting-off method and ECVT. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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4
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Raman R, Mollick PK, Goswami PS. Computational Fluid Dynamics–Discrete Element Method Studies on Dynamics and Segregation in Spouted Bed with Polydispersed Particles. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ritesh Raman
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Palash Kumar Mollick
- Glass & Advanced Materials Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Partha S. Goswami
- Department of Chemical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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Zhao Y, Zhang L, Duan F. Mixing Transition Characteristics of Binary Particles in a Fluidized Bed Using the Hilbert–Huang Transformation. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.1c03943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yunxiang Zhao
- School of Energy and Environment, Anhui University of Technology, Maanshan 243002, Anhui, P. R. China
| | - Lihui Zhang
- School of Energy and Environment, Anhui University of Technology, Maanshan 243002, Anhui, P. R. China
| | - Feng Duan
- School of Energy and Environment, Anhui University of Technology, Maanshan 243002, Anhui, P. R. China
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Computational analysis of the particle size effect on the pressure profiles and type of flow regimes of TiO2 microparticles in a fluidized bed. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2021. [DOI: 10.1515/ijcre-2021-0216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
The effect of particle size on the pressure profiles and flow regimes of the bed containing TiO2 microparticles (MPs) was investigated in a fluidized bed. The fluidization behavior of particles with mean diameters, d
p
, of 170, 200, 225, and 300 μm at different gas velocities, U
g
, was investigated both experimental and computational viewpoints. A computational fluid dynamic (CFD) model was developed by the Eulerian–Eulerian approach to evaluate the sensitivity of the Syamlal–O’Brien, and Gidaspow drag models on the predicted results of the bed pressure profiles. The results showed that with increasing particle size, the amplitude of pressure fluctuations increases and the type of flow regime in the bed tended from bubbling to slugging flow regime. The error analysis showed that the use of the Gidaspow model led to more accurate results than the Syamlal–O’Brien model in predicting the bed pressure drop and pressure fluctuations in the slugging flow regime. However, the Syamlal–O’Brien model was more suitable for predicting the pressure profiles in the bubbling flow regime. The results were more suitable for the bed containing particles of 300 μm than the beds with d
p
≤ 225 μm. The highest and lowest deviations between the experimental data and simulation outputs were obtained at U
g
of 0.295 and 0.650 m/s, respectively. The findings confirmed that the mutual effects existed between the d
p
pressure profiles, and the type of flow regimes in the bed.
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Huang J, Dong K, Lv M, Li H, Liu Z. Comprehensive Study on the Mixing Behavior of Small Dissimilar Particles in a Fluidized Bed. Ind Eng Chem Res 2020. [DOI: 10.1021/acs.iecr.0c04603] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jikai Huang
- Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250014, China
| | - Kaiming Dong
- Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250014, China
| | - Mingming Lv
- Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250014, China
| | - Huanan Li
- Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250014, China
| | - Zhigang Liu
- Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong 250014, China
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Oshitani J, Sugo R, Mawatari Y, Tsuji T, Jiang Z, Franks GV. Dry separation of fine particulate sand mixture based on density-segregation in a vibro-fluidized bed. ADV POWDER TECHNOL 2020. [DOI: 10.1016/j.apt.2020.08.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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9
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Systematic Study of Pressure Fluctuation in the Riser of a Dual Inter-Connected Circulating Fluidized Bed: Using Single and Binary Particle Species. Processes (Basel) 2019. [DOI: 10.3390/pr7120890] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This study systematically investigates the pressure fluctuation in the riser of a dual interconnected circulating fluidized bed (CFB) representing a 10 kWth cold-flow model (CFM) of a chemical-looping combustion (CLC) system. Specifically, a single-species system (SSS) and a binary-mixtures system (BMS) of particles with different sizes and densities were utilized. The pressure fluctuation was analyzed using the fast Fourier transform (FFT) method. The effect of introducing a second particle, changing the inventory, composition (i.e., 5, 10 to 20 wt.%), particle size ratio, and fluidization velocity were investigated. For typical SSS experiments, the results were similar to those scarcely reported in the literature, where the pressure fluctuation intensity was influenced by varying the initial operating conditions. The pressure fluctuations of BMS were investigated in detail and compared with those obtained from SSS experiments. BMS exhibited different behaviour; it had intense pressure fluctuation in the air reactor and in the riser when compared to SSS experiments. The standard deviation (SD) of the pressure fluctuation was found to be influenced by the fluidization regime and initial operating conditions, while the power spectrum density (PSD) values were more sensitive to the presence of the particles with the higher terminal velocity in the binary mixture.
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Liu C, Lu S, He J, Zhao Y, Zhu L. A modified model for predicting bed density of air dense medium gas-solid fluidized bed (ADMGFB) using binary dense media. POWDER TECHNOL 2019. [DOI: 10.1016/j.powtec.2019.07.052] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Anicic B, Lu B, Lin W, Wu H, Dam‐Johansen K, Wang W. CFD Simulation of Mixing and Segregation of Binary Solid Mixtures in a Dense Fluidized Bed. CAN J CHEM ENG 2019. [DOI: 10.1002/cjce.23561] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Bozidar Anicic
- Department of Chemical and Biochemical EngineeringTechnical University of Denmark, Søltofts Plads, Building 229, Kongens Lyngby Denmark
- Sino‐Danish Center for Education and Research, 380 Huaibeizhuang, Huairou District Beijing China
- Sino‐Danish CollegeUniversity of Chinese Academy of Science Beijing, Huairou District China
| | - Bona Lu
- Sino‐Danish CollegeUniversity of Chinese Academy of Science Beijing, Huairou District China
- Institute of Process Engineering, Chinese Academy of Sciences Beijing China
| | - Weigang Lin
- Department of Chemical and Biochemical EngineeringTechnical University of Denmark, Søltofts Plads, Building 229, Kongens Lyngby Denmark
| | - Hao Wu
- Department of Chemical and Biochemical EngineeringTechnical University of Denmark, Søltofts Plads, Building 229, Kongens Lyngby Denmark
| | - Kim Dam‐Johansen
- Department of Chemical and Biochemical EngineeringTechnical University of Denmark, Søltofts Plads, Building 229, Kongens Lyngby Denmark
| | - Wei Wang
- Sino‐Danish CollegeUniversity of Chinese Academy of Science Beijing, Huairou District China
- Institute of Process Engineering, Chinese Academy of Sciences Beijing China
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He J, Zhao Y, Huang G, Liu C. Evaluation of the separation performance of an air dense medium gas-solid fluidized bed for coal cleaning: Effect of the binary dense media. ADV POWDER TECHNOL 2018. [DOI: 10.1016/j.apt.2018.09.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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13
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Zhang Y, Zhang M, Yao X, Lyu J, Yang H. The exit impact on segregation of binary particles in the CFB system. POWDER TECHNOL 2018. [DOI: 10.1016/j.powtec.2018.08.070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Peng Z, Alghamdi YA, Moghtaderi B, Doroodchi E. CFD-DEM investigation of transition from segregation to mixing of binary solids in gas fluidised beds. ADV POWDER TECHNOL 2016. [DOI: 10.1016/j.apt.2016.08.024] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Khan MJH, Hussain MA, Mujtaba IM. Developed Hybrid Model for Propylene Polymerisation at Optimum Reaction Conditions. Polymers (Basel) 2016; 8:E47. [PMID: 30979141 PMCID: PMC6432575 DOI: 10.3390/polym8020047] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 01/20/2016] [Accepted: 01/28/2016] [Indexed: 11/16/2022] Open
Abstract
A statistical model combined with CFD (computational fluid dynamic) method was used to explain the detailed phenomena of the process parameters, and a series of experiments were carried out for propylene polymerisation by varying the feed gas composition, reaction initiation temperature, and system pressure, in a fluidised bed catalytic reactor. The propylene polymerisation rate per pass was considered the response to the analysis. Response surface methodology (RSM), with a full factorial central composite experimental design, was applied to develop the model. In this study, analysis of variance (ANOVA) indicated an acceptable value for the coefficient of determination and a suitable estimation of a second-order regression model. For better justification, results were also described through a three-dimensional (3D) response surface and a related two-dimensional (2D) contour plot. These 3D and 2D response analyses provided significant and easy to understand findings on the effect of all the considered process variables on expected findings. To diagnose the model adequacy, the mathematical relationship between the process variables and the extent of polymer conversion was established through the combination of CFD with statistical tools. All the tests showed that the model is an excellent fit with the experimental validation. The maximum extent of polymer conversion per pass was 5.98% at the set time period and with consistent catalyst and co-catalyst feed rates. The optimum conditions for maximum polymerisation was found at reaction temperature (RT) 75 °C, system pressure (SP) 25 bar, and 75% monomer concentration (MC). The hydrogen percentage was kept fixed at all times. The coefficient of correlation for reaction temperature, system pressure, and monomer concentration ratio, was found to be 0.932. Thus, the experimental results and model predicted values were a reliable fit at optimum process conditions. Detailed and adaptable CFD results were capable of giving a clear idea of the bed dynamics at optimum process conditions.
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Affiliation(s)
- Mohammad Jakir Hossain Khan
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Mohd Azlan Hussain
- Department of Chemical Engineering, Faculty of Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia.
- UM Power Energy Dedicated Advanced Centre (UMPEDAC).
| | - Iqbal Mohammed Mujtaba
- Chemical Engineering Division, School of Engineering, University of Bradford, Bradford BD7 1DP, UK.
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Wang Y, Yuan F. The basic study of methanol to gasoline in a pilot-scale fluidized bed reactor. J IND ENG CHEM 2014. [DOI: 10.1016/j.jiec.2013.06.037] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Polypropylene Production Optimization in Fluidized Bed Catalytic Reactor (FBCR): Statistical Modeling and Pilot Scale Experimental Validation. MATERIALS 2014; 7:2440-2458. [PMID: 28788576 PMCID: PMC5453352 DOI: 10.3390/ma7042440] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2013] [Revised: 03/12/2014] [Accepted: 03/13/2014] [Indexed: 11/17/2022]
Abstract
Propylene is one type of plastic that is widely used in our everyday life. This study focuses on the identification and justification of the optimum process parameters for polypropylene production in a novel pilot plant based fluidized bed reactor. This first-of-its-kind statistical modeling with experimental validation for the process parameters of polypropylene production was conducted by applying ANNOVA (Analysis of variance) method to Response Surface Methodology (RSM). Three important process variables i.e., reaction temperature, system pressure and hydrogen percentage were considered as the important input factors for the polypropylene production in the analysis performed. In order to examine the effect of process parameters and their interactions, the ANOVA method was utilized among a range of other statistical diagnostic tools such as the correlation between actual and predicted values, the residuals and predicted response, outlier t plot, 3D response surface and contour analysis plots. The statistical analysis showed that the proposed quadratic model had a good fit with the experimental results. At optimum conditions with temperature of 75°C, system pressure of 25 bar and hydrogen percentage of 2%, the highest polypropylene production obtained is 5.82% per pass. Hence it is concluded that the developed experimental design and proposed model can be successfully employed with over a 95% confidence level for optimum polypropylene production in a fluidized bed catalytic reactor (FBCR).
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Alavi Shoushtari N, Hosseini SA, Soleimani R. Investigation of segregation of large particles in a pressurized fluidized bed with a high velocity gas: A discrete particle simulation. POWDER TECHNOL 2013. [DOI: 10.1016/j.powtec.2013.05.041] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Di Maio FP, Di Renzo A, Vivacqua V. Extension and validation of the particle segregation model for bubbling gas-fluidized beds of binary mixtures. Chem Eng Sci 2013. [DOI: 10.1016/j.ces.2013.04.012] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Busciglio A, Vella G, Micale G. On the bubbling dynamics of binary mixtures of powders in 2D gas-solid fluidized beds. POWDER TECHNOL 2012. [DOI: 10.1016/j.powtec.2012.07.033] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Halow J, Holsopple K, Crawshaw B, Daw S, Finney C. Observed Mixing Behavior of Single Particles in a Bubbling Fluidized Bed of Higher-Density Particles. Ind Eng Chem Res 2012. [DOI: 10.1021/ie301517w] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jack Halow
- Waynesburg University, 51 West College Street, Waynesburg,
Pennsylvania 15370
| | - Kerri Holsopple
- Waynesburg University, 51 West College Street, Waynesburg,
Pennsylvania 15370
| | - Benjamin Crawshaw
- Waynesburg University, 51 West College Street, Waynesburg,
Pennsylvania 15370
| | - Stuart Daw
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
| | - Charles Finney
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831
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Di Maio FP, Di Renzo A, Vivacqua V. A particle segregation model for gas-fluidization of binary mixtures. POWDER TECHNOL 2012. [DOI: 10.1016/j.powtec.2012.04.040] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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25
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Norouzi H, Mostoufi N, Sotudeh-Gharebagh R. Effect of fines on segregation of binary mixtures in gas–solid fluidized beds. POWDER TECHNOL 2012. [DOI: 10.1016/j.powtec.2012.03.025] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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