1
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Xiong X, Wang S, Liu P, Tao C, Wang Y, Liu Z. Numerical investigation on intensified mixing performance with modified dual impeller. Chem Eng Sci 2023. [DOI: 10.1016/j.ces.2023.118698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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2
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Reduced power consumption in stirred vessel with high solid loading by equipping punched baffles. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2022.07.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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3
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Computational Fluid Dynamics Study of a Pharmaceutical Full-Scale Hydrogenation Reactor. Processes (Basel) 2022. [DOI: 10.3390/pr10061163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The pharmaceutical industry has been quite successful in developing new hydrogenation processes, and the chemistry of hydrogenation is currently well understood. However, it is a complex process to scale and optimize due to its high exothermicity, use of expensive catalysts and solvents, and its mass transfer requirements. Therefore, the aim of this work is to develop a CFD model to be able to describe the mass transfer, hydrodynamics, and mixing with respect to changes in rotational speed for a full-scale pharmaceutical hydrogenation reactor. In the first stage, a simple CFD model is used to predict the development of the surface vortex, and it is validated against literature data. In the second stage, the CFD model is tested on a full-scale configuration equipped with a Rushton turbine and a bottom kicker to study the formation of the surface vortex. Simulation results show the ability to predict the development of the surface vortex. These results are used to estimate the liquid height and mixing time as a function of several rotational speeds, allowing us to propose novel process correlations for this particular configuration. Although modelling the complete hydrogenation process would be challenging, this work is seen as a first step towards developing models that demonstrate the use of CFD at such large reactor scales.
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A novel ANN-CFD model for simulating flow in a vortex mixer. Chem Eng Sci 2022. [DOI: 10.1016/j.ces.2022.117819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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5
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Xiong X, Liu Z, Tao C, Wang Y, Fei W. Study on instability strengthening of flow field in stirred tank. J Taiwan Inst Chem Eng 2022. [DOI: 10.1016/j.jtice.2022.104284] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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6
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He J, Wang K, Zhang X, Wu P, Liu C, Jiang W. Efficient Antiscaling Technology Based on Superhydrophobicity Coupled Ultrasonic Technology. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c00412] [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]
Affiliation(s)
- Jian He
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Keke Wang
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Xingyang Zhang
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Pan Wu
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Changjun Liu
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
| | - Wei Jiang
- Low-Carbon Technology and Chemical Reaction Engineering Laboratory, School of Chemical Engineering, Sichuan University, Chengdu 610065, P. R. China
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Camacho Corzo DM, Ma CY, Mahmud T, Roberts KJ. Digital Design of Batch Cooling Crystallization Processes: Computational Fluid Dynamics Methodology for Modeling Free-Surface Hydrodynamics in Agitated Crystallizers. Org Process Res Dev 2020. [DOI: 10.1021/acs.oprd.0c00240] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Diana M. Camacho Corzo
- Centre for the Digital Design of Drug Products, School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, U.K
| | - Cai Y. Ma
- Centre for the Digital Design of Drug Products, School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, U.K
| | - Tariq Mahmud
- Centre for the Digital Design of Drug Products, School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, U.K
| | - Kevin J. Roberts
- Centre for the Digital Design of Drug Products, School of Chemical and Process Engineering, University of Leeds, Leeds LS2 9JT, U.K
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8
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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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9
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Study on critical speed of vortex rupture and gas-liquid two-phase flow in rotating soybean milk machine. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2020. [DOI: 10.1515/ijfe-2020-0144] [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 gas-liquid two-phase flow field inside a soybean milk machine is simulated with the Navier–Stokes equations, Renormalization group (RNG) k-ɛ turbulence model and the particle two-phase flow model. The critical speed of vortex breakdown in the container and the influence of the characteristics of the two-phase flow on the soybean crushing effect at different speeds are investigated. The results show that there is a critical value of rotating speed of 1500 rpm for the vortex breakdown in the studied machine. At this rotational speed, the turbulent eddy dissipation (TED) reaches the maximum, and the position where the vortex first rupture is near the central axis and with a distance of 0.01 m from the central axis. It is also found that with the increase of rotating speed, the pressure difference around the blade varies significantly. The research in this study has important implication for the design of the soybean milk machine.
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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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12
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Varela S, Martínez M, Delgado JA, Godard C, Curulla-Ferré D, Pallares J, Vernet A. Numerical and experimental modelization of the two-phase mixing in a small scale stirred vessel. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2017.11.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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13
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Zhang Y, Pan X, Wang Y, Luo P, Wu H. Numerical and experimental investigation on surface air entrainment mechanisms of a novel long-short blades agitator. AIChE J 2017. [DOI: 10.1002/aic.15865] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yueqiao Zhang
- School of Chemistry & Chemical Engineering; Southeast University; Nanjing 211189 China
| | - Xiang Pan
- School of Chemistry & Chemical Engineering; Southeast University; Nanjing 211189 China
| | - Yaohua Wang
- School of Chemistry & Chemical Engineering; Southeast University; Nanjing 211189 China
| | - Peicheng Luo
- School of Chemistry & Chemical Engineering; Southeast University; Nanjing 211189 China
| | - Hua Wu
- Institute for Chemical and Bioengineering, Dept. of Chemistry and Applied Biosciences; ETH Zurich; Zurich 8093 Switzerland
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Affiliation(s)
- Fengling Yang
- Shandong University; School of Mechanical Engineering; 17923 Jingshi Road 250061 Jinan China
- Shandong University; Key Laboratory of High Efficiency and Clean Mechanical Manufacture; 17923 Jingshi Road 250061 Jinan China
| | - Shenjie Zhou
- Shandong University; School of Mechanical Engineering; 17923 Jingshi Road 250061 Jinan China
- Shandong University; Key Laboratory of High Efficiency and Clean Mechanical Manufacture; 17923 Jingshi Road 250061 Jinan China
| | - Cuixun Zhang
- Shandong Tianli Energy Co., Ltd.; 28789 East Jingshi Road Jinan China
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Ardhan N, Ruttithiwapanich T, Songkasiri W, Phalakornkule C. Comparison of performance of continuous-flow and batch electrocoagulators: A case study for eliminating reactive blue 21 using iron electrodes. Sep Purif Technol 2015. [DOI: 10.1016/j.seppur.2015.03.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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16
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Analysis of solid concentration distribution in dense solid–liquid stirred tanks by electrical resistance tomography. Chem Eng Sci 2014. [DOI: 10.1016/j.ces.2014.07.049] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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17
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Free-surface shape in unbaffled stirred vessels: Experimental study via digital image analysis. Chem Eng Sci 2013. [DOI: 10.1016/j.ces.2013.10.019] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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18
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Ng K, Ng E. Laminar mixing performances of baffling, shaft eccentricity and unsteady mixing in a cylindrical vessel. Chem Eng Sci 2013. [DOI: 10.1016/j.ces.2013.10.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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19
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Fluid-dynamics characteristics of a vortex-ingesting stirred tank for biohydrogen production. Chem Eng Res Des 2013. [DOI: 10.1016/j.cherd.2013.04.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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20
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Durve A, Patwardhan A. Numerical and experimental investigation of onset of gas entrainment phenomenon. Chem Eng Sci 2012. [DOI: 10.1016/j.ces.2012.01.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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21
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Nogueira ES, Pinto JC, Vianna AS. Analysis of energy dissipation in stirred suspension polymerisation reactors using computational fluid dynamics. CAN J CHEM ENG 2011. [DOI: 10.1002/cjce.20611] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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22
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Haque JN, Mahmud T, Roberts KJ, Liang JK, White G, Wilkinson D, Rhodes D. Free-surface turbulent flow induced by a Rushton turbine in an unbaffled dish-bottom stirred tank reactor: LDV measurements and CFD simulations. CAN J CHEM ENG 2011. [DOI: 10.1002/cjce.20599] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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23
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Lamarque N, Zoppé B, Lebaigue O, Dolias Y, Bertrand M, Ducros F. Large-eddy simulation of the turbulent free-surface flow in an unbaffled stirred tank reactor. Chem Eng Sci 2010. [DOI: 10.1016/j.ces.2010.03.014] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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24
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Measurements and modelling of free-surface turbulent flows induced by a magnetic stirrer in an unbaffled stirred tank reactor. Chem Eng Sci 2009. [DOI: 10.1016/j.ces.2009.06.059] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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25
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26
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Jet injection studies for partially baffled mixing reactors: A general correlation for the jet trajectory and jet penetration depth. Chem Eng Res Des 2008. [DOI: 10.1016/j.cherd.2008.05.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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27
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An experimental and CFD study of liquid jet injection into a partially baffled mixing vessel: A contribution to process safety by improving the quenching of runaway reactions. Chem Eng Sci 2008. [DOI: 10.1016/j.ces.2007.10.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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28
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Hristov HV, Stephan B, Uwe H, Holger K, Günther H, Wilfried S. A study on the two-phase flow in a stirred tank reactor agitated by a gas-inducing turbine. Chem Eng Res Des 2008. [DOI: 10.1016/j.cherd.2007.10.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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29
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Torré JP, Fletcher DF, Lasuye T, Xuereb C. Single and multiphase CFD approaches for modelling partially baffled stirred vessels: Comparison of experimental data with numerical predictions. Chem Eng Sci 2007. [DOI: 10.1016/j.ces.2007.06.044] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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30
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Torré J, Fletcher D, Lasuye T, Xuereb C. Transient Hydrodynamics and Free Surface Capture of an Under-Baffled Stirred Tank During Stopping. Chem Eng Res Des 2007. [DOI: 10.1205/cherd06174] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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