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Liu F, Lu T, Li K, Xie C, Zhao H. Computational fluid dynamics study on the effect of stirring parameters on solid–liquid suspension in the slurry electrolysis square tank. ADV POWDER TECHNOL 2023. [DOI: 10.1016/j.apt.2023.104016] [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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Yin C, Zheng K, He J, Xiong Y, Tian Z, Lin Y, Long D. Turbulent CFD Simulation of Two Rotor-Stator Agitators for High Homogeneity and Liquid Level Stability in Stirred Tank. MATERIALS (BASEL, SWITZERLAND) 2022; 15:8563. [PMID: 36500064 PMCID: PMC9736096 DOI: 10.3390/ma15238563] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/23/2022] [Accepted: 11/25/2022] [Indexed: 06/17/2023]
Abstract
Good solid-liquid mixing homogeneity and liquid level stability are necessary conditions for the preparation of high-quality composite materials. In this study, two rotor-stator agitators were utilized, including the cross-structure rotor-stator (CSRS) agitator and the half-cross structure rotor-stator (HCSRS) agitator. The performances of the two types of rotor-stator agitators and the conventional A200 (an axial-flow agitator) and Rushton (a radial-flow agitator) in the solid-liquid mixing operations were compared through CFD modeling, including the homogeneity, power consumption and liquid level stability. The Eulerian-Eulerian multi-fluid model coupling with the RNG k-ε turbulence model were used to simulate the granular flow and the turbulence effects. When the optimum solid-liquid mixing homogeneity was achieved in both conventional agitators, further increasing stirring speed would worsen the homogeneity significantly, while the two rotor-stator agitators still achieving good mixing homogeneity at the stirring speed of 600 rpm. The CSRS agitator attained the minimum standard deviation of particle concentration σ of 0.15, which was 42% smaller than that achieved by the A200 agitators. Moreover, the average liquid level velocity corresponding to the minimum σ obtained by the CSRS agitator was 0.31 m/s, which was less than half of those of the other three mixers.
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Affiliation(s)
- Cuicui Yin
- Guangdong Provincial Key Laboratory of Metal Toughening Technology and Application, Institute of New Materials, Guangdong Academy of Sciences, National Engineering Research Center of Powder Metallurgy of Titanium and Rare Metals, Guangzhou 510651, China
| | - Kaihong Zheng
- Guangdong Provincial Key Laboratory of Metal Toughening Technology and Application, Institute of New Materials, Guangdong Academy of Sciences, National Engineering Research Center of Powder Metallurgy of Titanium and Rare Metals, Guangzhou 510651, China
| | - Jiazhen He
- Guangdong Provincial Key Laboratory of Metal Toughening Technology and Application, Institute of New Materials, Guangdong Academy of Sciences, National Engineering Research Center of Powder Metallurgy of Titanium and Rare Metals, Guangzhou 510651, China
| | - Yongnan Xiong
- Guangdong Provincial Key Laboratory of Metal Toughening Technology and Application, Institute of New Materials, Guangdong Academy of Sciences, National Engineering Research Center of Powder Metallurgy of Titanium and Rare Metals, Guangzhou 510651, China
| | - Zhuo Tian
- Guangdong Provincial Key Laboratory of Metal Toughening Technology and Application, Institute of New Materials, Guangdong Academy of Sciences, National Engineering Research Center of Powder Metallurgy of Titanium and Rare Metals, Guangzhou 510651, China
| | - Yingfei Lin
- Guangdong Provincial Key Laboratory of Metal Toughening Technology and Application, Institute of New Materials, Guangdong Academy of Sciences, National Engineering Research Center of Powder Metallurgy of Titanium and Rare Metals, Guangzhou 510651, China
| | - Danfeng Long
- Institute of Intelligent Manufacturing, Guangdong Academy of Sciences, Guangzhou 510651, China
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3
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Numerical Simulation of Solid-Liquid Suspension in a Slurry Electrolysis Stirred Tank. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.11.046] [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]
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4
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A data-driven stochastic model for velocity field and phase distribution in stirred particle-liquid suspensions. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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5
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Study on the solid–liquid suspension behavior in a tank stirred by the long-short blades impeller. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2021.06.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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6
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Analyzing the dispersion of solids in pseudoplastic fluids with coaxial stirrers via numerical modeling and tomography technique. POWDER TECHNOL 2022. [DOI: 10.1016/j.powtec.2022.117127] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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7
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Basheer AA, Bharathesh K. Effect of baffle configuration on hydrodynamics and solid suspension in a continuous stirred vessel. CHEM ENG COMMUN 2021. [DOI: 10.1080/00986445.2021.1975681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Ashraf Ali Basheer
- Department of Chemical Engineering, National Institute of Technology Karnataka, Mangalore, India
| | - Kumar Bharathesh
- Department of Chemical Engineering, National Institute of Technology Karnataka, Mangalore, India
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8
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Gu D, Zhao F, Wang X, Liu Z. Modeling evaluation on solid-liquid mixing characteristics in a dislocated guide impeller stirred tank. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2021. [DOI: 10.1515/ijcre-2021-0147] [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
The solid-liquid mixing characteristics in a stirred tank with pitched blade impellers, dislocated impellers, and dislocated guide impellers were investigated through using CFD simulation. The effects of impeller speed, impeller type, aperture ratio, aperture length, solid particle diameter and initial solid holdup on the homogeneity degree in the solid-liquid mixing process were investigated. As expected, the solid particle suspension quality was increased with an increase in impeller speed. The dislocated impeller could reduce the accumulation of solid particles and improve the cloud height compared with pitched blade impeller under the same power consumption. The dislocated guide impeller could enhance the solid particles suspension quality on the basis of dislocated impeller, and the optimum aperture ratio and aperture length of dislocated guide impeller were 12.25% and 7 mm, respectively, in the solid-liquid mixing process. Smaller solid particle diameter and lower initial solid holdup led to higher homogeneity degree of solid-liquid mixing system. The dislocated guide impeller could increase solid particle integrated velocity and enhance turbulent intensity of solid-liquid two-phase compared with pitched blade impeller and dislocated impeller under the same power consumption.
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Affiliation(s)
- Deyin Gu
- School of Environment and Resources , Chongqing Technology and Business University , Chongqing 400060 , China
| | - Fenghui Zhao
- Qinghai Salt Lake Haina Chemical Co. Ltd. , Qinghai , China
| | - Xingmin Wang
- School of Environment and Resources , Chongqing Technology and Business University , Chongqing 400060 , China
| | - Zuohua Liu
- School of Chemistry and Chemical Engineering , Chongqing University , Chongqing 400044 , China
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9
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Mishra P, Ein-Mozaffari F. Using flow visualization and numerical methods to investigate the suspension of highly concentrated slurries with the coaxial mixers. POWDER TECHNOL 2021. [DOI: 10.1016/j.powtec.2021.05.078] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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CFD Simulation of Solid Suspension for a Liquid–Solid Industrial Stirred Reactor. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11125705] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The present study examines the possibility of using an industrial stirred chemical reactor, originally employed for liquid–liquid mixtures, for operating with two-phase liquid–solid suspensions. It is critical when obtaining a high-quality chemical product that the solid phase remains suspended in the liquid phase long enough that the chemical reaction takes place. The impeller was designed for the preparation of a chemical product with a prescribed composition. The present study aims at finding, using a numerical simulation analysis, if the performance of the original impeller is suitable for obtaining a new chemical product with a different composition. The Eulerian multiphase model was employed along with the renormalization (RNG) k-ε turbulence model to simulate liquid–solid flow with a free surface in a stirred tank. A sliding-mesh approach was used to model the impeller rotation with the commercial CFD code, FLUENT. The results obtained underline that 25% to 40% of the solid phase is sedimented on the lower part of the reactor, depending on the initial conditions. It results that the impeller does not perform as needed; hence, the suspension time of the solid phase is not long enough for the chemical reaction to be properly completed.
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11
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Improving the Homogenization of the Liquid-Solid Mixture Using a Tandem of Impellers in a Baffled Industrial Reactor. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11125492] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The paper explores a tandem configuration of three-blade impellers in a stirred reactor. The working fluid is a liquid-solid mixture and the stirring mechanism fitted with the two impellers must prevent the sedimentation of solid particles while homogenously dispersing them in the bulk liquid. The present numerical investigation, performed with the expert software Ansys® Fluent, Release 16, employs the Eulerian multiphase model along with the RNG k–ε turbulence model to simulate the free-surface liquid–solid flows in the baffled stirred reactor. A sliding mesh approach is used to model the impellers rotation. The tandem configuration is clearly superior to a single impeller, while the existing electrical motor that drives the stirring mechanism still provides the necessary power.
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12
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CFD Assessment of the Hydrodynamic Performance of Two Impellers for a Baffled Stirred Reactor. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11114949] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
When converting a baffled stirred reactor to work with a different fluid, usually the original impeller must be replaced with a customized one. If the original impeller was designed for mixing liquids, its performance for liquid–solid suspensions may not be satisfactory. A case study is presented, where a two-blade original impeller is replaced with a new three-blade design. The new impeller shows clear improvements in mixing a liquid–solid suspension, while keeping the shaft power practically at the same level. As a result, a practically homogenous liquid–solid mixture is obtained, thus ensuring the required quality of the final product. The present numerical investigations employ the Eulerian multiphase model with renormalization (RNG) k–ε turbulence model to simulate the three-dimensional unsteady free-surface liquid–solid flow in a stirred tank. A sliding mesh approach was used to account for the impeller rotation within the expert code, FLUENT 16. The comparative quantitative analysis of the solid phase distribution and the relevant velocity profiles show that the new design of three-blade-impeller is significantly increasing the sedimentation time of the solid phase beyond the chemical reaction specific time. The necessary power to drive the new impeller has a slightly higher value than for the original impeller but it can be sustained by the existing driving system.
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13
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Xu Z, Yang C, Zhang Z, Liu B, Jin Z. Study on the Numerical Model of Dense Solid Suspension Driven by a Coaxial Mixer. Ind Eng Chem Res 2021. [DOI: 10.1021/acs.iecr.0c06287] [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]
Affiliation(s)
- Zilong Xu
- Institute of Process Equipment, Zhejiang University, Hangzhou 310027, China
| | - Chao Yang
- Institute of Process Equipment, Zhejiang University, Hangzhou 310027, China
| | - Ziqiang Zhang
- Institute of Process Equipment, Zhejiang University, Hangzhou 310027, China
| | - Baoqing Liu
- Institute of Process Equipment, Zhejiang University, Hangzhou 310027, China
| | - Zhijiang Jin
- Institute of Process Equipment, Zhejiang University, Hangzhou 310027, China
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14
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15
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CFD simulation of impeller shape effect on quality of mixing in two-phase gas–liquid agitated vessel. Chin J Chem Eng 2020. [DOI: 10.1016/j.cjche.2020.06.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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16
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Numerical simulation of micro-mixing in gas–liquid and solid–liquid stirred tanks with the coupled CFD-E-model. Chin J Chem Eng 2020. [DOI: 10.1016/j.cjche.2020.06.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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17
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Disengagement of dispersed cerium oxalate from nitric-oxalic acid medium in a batch settler: Measurements and CFD simulations. ANN NUCL ENERGY 2020. [DOI: 10.1016/j.anucene.2020.107574] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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18
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Abstract
The mixing process in a mechanically agitated vessel is a widespread phenomenon which plays an important role among industrial processes. In that process, one of the crucial parameters, the mixing efficiency, depends on a large number of geometrical factors, as well as process parameters and complex interactions between the phases which are still not well understood. In the last decade, large progress has been made in optimisation, construction and numerical and experimental analysis of mechanically agitated vessels. In this review, the current state in this field has been presented. It shows that advanced computational fluid dynamic techniques for multiphase flow analysis with reactions and modern experimental techniques can be used with success to analyse in detail mixing features in liquid-liquid, gas-liquid, solid-liquid and in more than two-phase flows. The objective is to show the most important research recently carried out.
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19
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Mishra P, Ein-Mozaffari F. Critical review of different aspects of liquid-solid mixing operations. REV CHEM ENG 2020. [DOI: 10.1515/revce-2018-0017] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
AbstractMechanically stirred slurry tanks are utilized in several industries to perform various unit operations such as crystallization, adsorption, ion-exchange, suspensions polymerization, dispersion of solid particles, leaching and dissolution, and activated sludge processes. The major goal of this review paper is to critically and thoroughly analyse the different aspects of previous research works reported in the literature in the field of liquid-solid mixing. This paper sheds light on the advantages and limitations of various particle concentration measurement methods employed to assess the suspension quality and the extent of solid suspensions in slurry reactors. Attempts are being made to identify and compare various mathematical models and methods to quantify particle dispersion and distribution in slurry reactors. It has been shown that various factors such as geometric configurations, agitation conditions, and physical characteristics of liquid and solid have pronounced influence on local suspension quality and power consumption. Computational fluid dynamics (CFD) modeling can be extremely useful in assessing the suspension of solid particles in slurry tanks. A critical review of different scale-up procedures employed for solid suspension and distribution in liquid-solid systems is presented as well. The findings of this review paper can be useful for future research works in liquid-solid mixing.
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Affiliation(s)
- Prakash Mishra
- Department of Chemical Engineering, Ryerson University, 350 Victoria Street, M5B 2K3 Toronto, Canada
| | - Farhad Ein-Mozaffari
- Department of Chemical Engineering, Ryerson University, 350 Victoria Street, M5B 2K3 Toronto, Canada
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20
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Multi-phase particle-in-cell coupled with population balance equation (MP-PIC-PBE) method for multiscale computational fluid dynamics simulation. Comput Chem Eng 2020. [DOI: 10.1016/j.compchemeng.2019.106686] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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21
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Liu B, Xu Z, Xiao Q, Huang B. Numerical study on solid suspension characteristics of a coaxial mixer in viscous systems. Chin J Chem Eng 2019. [DOI: 10.1016/j.cjche.2019.01.031] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Ćosić M, Čelan A, Pehnec I, Kuzmanić N. Investigation of crystal growth of borax in single and dual impeller batch cooling crystallizer. CHEM ENG COMMUN 2019. [DOI: 10.1080/00986445.2019.1630392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Marija Ćosić
- Department of Chemical Engineering, Faculty of Chemistry and Technology, University of Split, Split, Croatia
| | - Antonija Čelan
- Department of Chemical Engineering, Faculty of Chemistry and Technology, University of Split, Split, Croatia
| | - Igor Pehnec
- Department of Mechanical Engineering and Naval Architecture, Faculty of Electrical Engineering, Mechanical Engineering and Naval Architecture, University of Split, Split, Croatia
| | - Nenad Kuzmanić
- Department of Chemical Engineering, Faculty of Chemistry and Technology, University of Split, Split, Croatia
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23
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Sen N, Singh K, Patwardhan A, Mukhopadhyay S, Shenoy K. CFD-PBM simulations of a pulsed sieve plate column. PROGRESS IN NUCLEAR ENERGY 2019. [DOI: 10.1016/j.pnucene.2018.10.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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24
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Tamburini A, Gagliano G, Micale G, Brucato A, Scargiali F, Ciofalo M. Direct numerical simulations of creeping to early turbulent flow in unbaffled and baffled stirred tanks. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.07.023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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25
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Farakte RA, Hendre NV, Patwardhan AW. CFD Simulations of Two Phase Flow in Asymmetric Rotary Agitated Columns. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b02720] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Raosaheb A. Farakte
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai-400019, India
| | - Nilesh V. Hendre
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai-400019, India
| | - Ashwin W. Patwardhan
- Department of Chemical Engineering, Institute of Chemical Technology, Matunga, Mumbai-400019, India
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26
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Celani A, Blackburn S, Simmons M, Stitt E. Effect of mixing conditions on the wet preparation of ceramic foams. Chem Eng Res Des 2018. [DOI: 10.1016/j.cherd.2018.03.044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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27
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Gu D, Liu Z, Qiu F, Li J, Tao C, Wang Y. CFD Simulation of Solid Suspension in a Stirred Reactor Driven by a Dual Punched Rigid-Flexible Impeller. INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING 2018. [DOI: 10.1515/ijcre-2017-0241] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Solid suspension characteristics were predicted by computational fluid dynamics (CFD) simulation in a stirred tank driven by a dual rigid-flexible impeller and a dual punched rigid-flexible impeller. An Eulerian-Eulerian approach, standard k-ε turbulence model, and multiple reference frames (MRF) technique were employed to simulate the solid-liquid two-phase flow, turbulent flow, and impeller rotation in the stirred tank, respectively. The CFD results showed that dual punched rigid-flexible impeller could increase the axial velocity and turbulent kinetic energy dissipation rate, and decrease the quantity of sediment solid particles compared with dual rigid-flexible impeller. Less impeller power was consumed by dual punched rigid-flexible impeller compared with dual rigid-flexible impeller at the same impeller speed. It was found that punched rigid-flexible impeller was more efficient in terms of solid suspension quality than dual rigid-flexible impeller at the same Pw. The simulated results for the axial solid concentration were in good agreement with the experimental data.
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28
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Sen N, Singh K, Patwardhan A, Mukhopadhyay S, Shenoy K. CFD simulations to predict dispersed phase holdup in a pulsed sieve plate column. SEP SCI TECHNOL 2018. [DOI: 10.1080/01496395.2018.1459702] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Nirvik Sen
- Chemical Engineering Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - K.K. Singh
- Chemical Engineering Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - A.W. Patwardhan
- Department of Chemical Engineering, Institute of Chemical Technology, Mumbai, India
| | - S. Mukhopadhyay
- Chemical Engineering Division, Bhabha Atomic Research Centre, Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - K.T. Shenoy
- Chemical Engineering Division, Bhabha Atomic Research Centre, Mumbai, India
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29
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Delafosse A, Loubière C, Calvo S, Toye D, Olmos E. Solid-liquid suspension of microcarriers in stirred tank bioreactor – Experimental and numerical analysis. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2018.01.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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30
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Modeling and simulation of the influences of particle-particle interactions on dense solid–liquid suspensions in stirred vessels. Chem Eng Sci 2018. [DOI: 10.1016/j.ces.2017.11.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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31
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Gu D, Liu Z, Xie Z, Li J, Tao C, Wang Y. Numerical simulation of solid-liquid suspension in a stirred tank with a dual punched rigid-flexible impeller. ADV POWDER TECHNOL 2017. [DOI: 10.1016/j.apt.2017.07.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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32
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Sen N, Singh KK, Patwardhan AW, Mukhopadhyay S, Shenoy KT. CFD simulation of two-phase flow in pulsed sieve-plate column – Identification of a suitable drag model to predict dispersed phase hold up. SEP SCI TECHNOL 2016. [DOI: 10.1080/01496395.2016.1218895] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Nirvik Sen
- Homi Bhabha National Institute, Mumbai, India
- Chemical Engineering Division, Bhabha Atomic Research Centre, Mumbai, India
| | - K. K. Singh
- Homi Bhabha National Institute, Mumbai, India
- Chemical Engineering Division, Bhabha Atomic Research Centre, Mumbai, India
| | | | - S. Mukhopadhyay
- Homi Bhabha National Institute, Mumbai, India
- Chemical Engineering Division, Bhabha Atomic Research Centre, Mumbai, India
| | - K. T. Shenoy
- Chemical Engineering Division, Bhabha Atomic Research Centre, Mumbai, India
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ZHOU XUELING, LIU YIFAN, YU WEN, CHENG SHAOJIE, YIN JIANZHONG. SIMULATION OF SOLID–LIQUID SUSPENSION AND SCALE-UP OF AGAROSE GEL ACTIVATION REACTOR. J MECH MED BIOL 2016. [DOI: 10.1142/s0219519416500871] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Agarose gel activation reaction, which is of great importance in preparing the carrier of the column packing material for blood purification, would be significantly influenced by the configuration and parameter of reactor. In order to optimize the structure design of the reactor and operating parameters of the process, the characteristics of suspension system composed of agarose gel, NaOH, water, 3-allyl bromide, and activated alumina were simulated numerically utilizing an Eulerian multiphase flow model and multi-reference frame (MRF) approach. The effect of impeller configuration was studied with three typical impellers, including Rushton disk turbine (DT), pitched blade downflow turbine (PBTD45), and pitched blade upflow turbine (PBTU45). The results showed that the optimum solid suspension was obtained using PBTD45 impeller with a diameter of 100[Formula: see text]mm and critical suspension speed of 570[Formula: see text]rpm in a 20[Formula: see text]L stirred reactor. In addition, the critical suspension speeds using the three impellers were calculated and the errors were all within the engineering allowance. Finally, the feasibility of scale-up design for agarose gel activation reactor was preliminarily discussed. The results would be useful to the optimization and scale-up of relevant reactor design.
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Affiliation(s)
- XUELING ZHOU
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, P. R. China
| | - YIFAN LIU
- School of Chemical Machinery, State Key Laboratory of Fine Chemicals, Dalian 116024, P. R. China
| | - WEN YU
- School of Chemical Machinery, State Key Laboratory of Fine Chemicals, Dalian 116024, P. R. China
| | - SHAOJIE CHENG
- School of Chemical Machinery, State Key Laboratory of Fine Chemicals, Dalian 116024, P. R. China
| | - JIANZHONG YIN
- State Key Laboratory of Fine Chemicals, School of Chemical Machinery, Dalian University of Technology, Dalian 116024, P. R. China
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34
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Wang S, Jiang M, Ibrahim S, Wu J, Feng X, Duan X, Yang Z, Yang C, Ohmura N. Optimized Stirred Reactor for Enhanced Particle Dispersion. Chem Eng Technol 2016. [DOI: 10.1002/ceat.201500458] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Yang S, Li X, Yang C, Ma B, Mao ZS. Computational Fluid Dynamics Simulation and Experimental Measurement of Gas and Solid Holdup Distributions in a Gas–Liquid–Solid Stirred Reactor. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b03163] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shifang Yang
- Key
Laboratory of Green Process and Engineering, Institute of Process
Engineering, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiangyang Li
- Key
Laboratory of Green Process and Engineering, Institute of Process
Engineering, Chinese Academy of Sciences, Beijing 100190, China
| | - Chao Yang
- Key
Laboratory of Green Process and Engineering, Institute of Process
Engineering, Chinese Academy of Sciences, Beijing 100190, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Bin Ma
- Key
Laboratory of Green Process and Engineering, Institute of Process
Engineering, Chinese Academy of Sciences, Beijing 100190, China
- China University of Mining & Technology, Beijing 100083, China
| | - Zai-Sha Mao
- Key
Laboratory of Green Process and Engineering, Institute of Process
Engineering, Chinese Academy of Sciences, Beijing 100190, China
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Cao H, Deng B, Hong J, Xue J, Chang F. Numerical Simulation of the Arrangement of Baffles on Radiation Distribution and Disinfection in UV Reactors. Chem Eng Technol 2015. [DOI: 10.1002/ceat.201500151] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Abstract
AbstractThis review evaluates computational fluid dynamic applications to analyze solid suspension quality in stirred vessels. Most researchers typically employ either Eulerian-Eulerian or Eulerian-Lagrangian approach to investigate multiphase flow in stirred vessels. With sufficient computational resources, the E-L approach simulates flow structures with higher spatial resolution for dispersed multiphase flows. Common turbulence models such as the two-equation eddy-viscosity models (
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Li Z, Derksen JJ, Gao Z. Models and Applications for Simulating Turbulent Solid–Liquid Suspensions in Stirred Tanks. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2015. [DOI: 10.1252/jcej.14we056] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Zhipeng Li
- School of Engineering, University of Aberdeen
- State Key Laboratory of Chemical Resource Engineering, School of Chemical Engineering, Beijing University of Chemical Technology
| | - J. J. Derksen
- Chemical Engineering, Delft University of Technology
- School of Engineering, University of Aberdeen
| | - Zhengming Gao
- State Key Laboratory of Chemical Resource Engineering, School of Chemical Engineering, Beijing University of Chemical Technology
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Qiao S, Wang R, Yang X, Yan Y. CFD simulation of complete drawdown of floating solids in a stirred tank. CAN J CHEM ENG 2014. [DOI: 10.1002/cjce.22097] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Shengchao Qiao
- School of Chemical Engineering & Technology; Tianjin University; Tianjin 300072 PR China
| | - Rijie Wang
- School of Chemical Engineering & Technology; Tianjin University; Tianjin 300072 PR China
| | - Xiaoxia Yang
- School of Chemical Engineering & Technology; Tianjin University; Tianjin 300072 PR China
| | - Yuefei Yan
- School of Chemical Engineering & Technology; Tianjin University; Tianjin 300072 PR China
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Qiao S, Wang R, Yan Y, Yang X. Computational fluid dynamics analysis to effects of geometrical design and physical property on complete suspension of floating solids in stirred tanks. ASIA-PAC J CHEM ENG 2014. [DOI: 10.1002/apj.1835] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shengchao Qiao
- School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
| | - Rijie Wang
- School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
| | - Yuefei Yan
- School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
| | - Xiaoxia Yang
- School of Chemical Engineering and Technology; Tianjin University; Tianjin 300072 China
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Influence of drag and turbulence modelling on CFD predictions of solid liquid suspensions in stirred vessels. Chem Eng Res Des 2014. [DOI: 10.1016/j.cherd.2013.10.020] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Qiao S, Wang R, Yang X, Yan Y. CFD Prediction of Effects of Impeller Design on Floating Solids Mixing in Stirred Tanks with Pitched Blade Turbines. JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 2014. [DOI: 10.1252/jcej.13we313] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Shengchao Qiao
- School of Chemical Engineering and Technology, Tianjin University
| | - Rijie Wang
- School of Chemical Engineering and Technology, Tianjin University
| | - Xiaoxia Yang
- School of Chemical Engineering and Technology, Tianjin University
| | - Yuefei Yan
- School of Chemical Engineering and Technology, Tianjin University
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Feng X, Li X, Cheng J, Yang C, Mao ZS. Numerical simulation of liquid–liquid turbulent flow in a stirred tank with an explicit algebraic stress model. Chem Eng Res Des 2013. [DOI: 10.1016/j.cherd.2013.07.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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45
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Numerical modelling of velocity field and phase distribution in dense monodisperse solid–liquid suspensions under different regimes of agitation: CFD and PEPT experiments. Chem Eng Sci 2013. [DOI: 10.1016/j.ces.2013.05.066] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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47
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Improving the mixing performances of rice straw anaerobic digestion for higher biogas production by computational fluid dynamics (CFD) simulation. Appl Biochem Biotechnol 2013; 171:626-42. [PMID: 23873639 DOI: 10.1007/s12010-013-0375-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Accepted: 06/27/2013] [Indexed: 10/26/2022]
Abstract
As a lignocellulose-based substrate for anaerobic digestion, rice straw is characterized by low density, high water absorbability, and poor fluidity. Its mixing performances in digestion are completely different from traditional substrates such as animal manures. Computational fluid dynamics (CFD) simulation was employed to investigate mixing performances and determine suitable stirring parameters for efficient biogas production from rice straw. The results from CFD simulation were applied in the anaerobic digestion tests to further investigate their reliability. The results indicated that the mixing performances could be improved by triple impellers with pitched blade, and complete mixing was easily achieved at the stirring rate of 80 rpm, as compared to 20-60 rpm. However, mixing could not be significantly improved when the stirring rate was further increased from 80 to 160 rpm. The simulation results agreed well with the experimental results. The determined mixing parameters could achieve the highest biogas yield of 370 mL (g TS)(-1) (729 mL (g TS(digested))(-1)) and 431 mL (g TS)(-1) (632 mL (g TS(digested))(-1)) with the shortest technical digestion time (T 80) of 46 days. The results obtained in this work could provide useful guides for the design and operation of biogas plants using rice straw as substrates.
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Sajjadi B, Raman AAA, Shah RSSRE, Ibrahim S. Review on Applicable breakup/coalescence models in turbulent liquid-liquid flows. REV CHEM ENG 2013. [DOI: 10.1515/revce-2012-0014] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Montante G, Paglianti A, Magelli F. Analysis of dilute solid–liquid suspensions in turbulent stirred tanks. Chem Eng Res Des 2012. [DOI: 10.1016/j.cherd.2012.01.009] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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50
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Feng X, Li X, Cheng J, Yang C, Mao ZS. Numerical simulation of solid–liquid turbulent flow in a stirred tank with a two-phase explicit algebraic stress model. Chem Eng Sci 2012. [DOI: 10.1016/j.ces.2012.07.044] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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