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liquid mixing dynamics in slurry stirred tanks based on

liquid mixing dynamics in slurry stirred tanks based on

Liquid mixing dynamics in slurry stirred tanks based on ...

Oct 02, 2016  For a more extensive evaluation of the liquid mixing dynamics in the slurry stirred tank, the local conductivity data on adjacent measurement planes are interpolated, providing information on the vessel volume bounded between the lower and the upper measurements’ planes (z 1 and z 4).

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Solid Suspension and Liquid Phase Mixing in Solid−Liquid ...

The analysis of the solid-liquid fluid dynamics of stirred tanks working with high amount of solids showed that, depending on the impeller speed, an almost stagnant clear liquid layer can be ...

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Mixing indices allow scale-up of stirred tank slurry ...

Jan 01, 2020  Liquid mixing dynamics in slurry stirred tanks based on electrical resistance tomography Chem. Eng. Sci. , 152 ( 2016 ) , pp. 478 - 487 , 10.1016/j.ces.2016.06.044 Article Download PDF View Record in Scopus Google Scholar

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Augmented-reality Visualisation of Fluid Mixing in Stirred ...

Liquid mixing dynamics in slurry stirred tanks based on electrical resistance tomography ... in a solid–liquid baffled stirred tank is investigated experimentally by Electrical Resistance ...

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Analysis of immiscible liquid-liquid mixing in stirred ...

Dec 14, 2020  The effectiveness in evaluating the liquid-liquid mixing performances based on ERT data was shown by Mirshekari and Pakzad (2019), who compared the effect of different physical properties of the liquid-liquid dispersions and different geometrical characteristics of the stirred vessels based on a mixing index obtained on two measuring planes.

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Handbook of industrial mixing Request PDF

Liquid mixing dynamics in slurry stirred tanks based on electrical resistance tomography ... the evaluation of the scalar mixing dynamics in stirred tanks. ... for a two-phase gas–liquid stirred ...

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Liquid mixing dynamics in slurry stirred tanks based on ...

Whole-field data on the homogenization dynamics are collected with liquid only and with a mass ratio of suspended solid to liquid equal to 0.43. The liquid mixing time, which is often adopted as a measure of the intensity of mixing in turbulent stirred tanks, leads to quantitatively assess the significant difference in the scalar mixing process ...

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Particles dissolution and liquid mixing dynamics by ...

Salt particles dissolution in slurry stirred tanks provides an ambitious challenge for the application of Electrical Resistance Tomography in the process industry, because the presence of high load...

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Augmented-reality Visualisation of Fluid Mixing in Stirred ...

Liquid mixing dynamics in slurry stirred tanks based on electrical resistance tomography ... in a solid–liquid baffled stirred tank is investigated experimentally by Electrical Resistance ...

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Computational fluid dynamics modelling of solid suspension ...

stirred slurry reactors as well as further research in the field. Keywords: Computational fluid dynamics, hysteresis, solid suspension, stirred tanks. Solid suspension and mixing are crucial in many impor tant processes, including multiphase catalytic reactions, crystallization, precipitation, leaching, dissolution, co agulation and water ...

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Experimental and CFD studies of solid–liquid slurry tank ...

Computational fluid dynamics (CFD) has been used to analyze the mixing process of Asphalt and Rubber (AR) in a stirred tank with a six flat-blade disc turbine (Rushton), a down-pumping 45 ...

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Computational Fluid Dynamics Simulation of the Solid ...

A comprehensive computational fluid dynamics CFD model was developed in the present study to gain insight into the solid suspension in a stirred slurry reactor. The preliminary simulations highlighted the need for the correct modeling of the interphase drag force. A two-dimensional model problem was then developed using CFD to understand the influence of free stream turbulence on the particle ...

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Computational fluid dynamics simulation and experimental ...

Sep 26, 2019  The suspension characteristics of ultrafine powder slurry in the stirred vessel were simulated by using computational fluid dynamics. The results show that the Rushton disk turbine impeller is more conducive to maintaining suspended homogeneity and circulation of slurry compared with the pitch blade turbine pumping up impeller and the pitch blade turbine pumping down impeller.

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Improved mixing of solid suspensions in stirred tanks with ...

Abstract Mixing is an important unit operation in the process industry. Ensuring homogeneity of slurry or emulsion is critical for subsequent processing or to improve the efficacy of reactions, and heat/mass transfer. Mixing in stirred tanks is typically improved through baffles. While baffles are good at breaking vortices, they contribute to energy dissipation.

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Computational Fluid Dynamics of Solid Suspension in ...

Abstract. A comprehensive computational fluid dynamics CFD model was developed in the present study to gain insight into the solid suspension in a stirred slurry reactor. The preliminary ...

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Analysis of solid concentration distribution in dense ...

Nov 08, 2014  1. Introduction. Slurry stirred tanks are widely adopted for accomplishing several unit operations of the chemical industry (Atiemo-Obeng et al., 2004) including, among others, crystallization, leaching and solid-catalyzed reactions, just to mention a few examples.A deep knowledge of the complex fluid dynamics of this equipment, which affects solids suspension and distribution, power ...

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Using Electrical Resistance Tomography Images to ...

The liquid mixing time, which is often adopted as a measure of the intensity of mixing in turbulent stirred tanks, leads to quantitatively assess the significant difference in the scalar mixing ...

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Positron Emission Particle Tracking for Liquid‐Solid ...

Jul 06, 2020  1 Introduction 1.1 Measuring Solids Suspension and Homogeneity in Stirred-Tank Systems. The mixing of solids and liquids in stirred-tank systems is an important process widely used across a variety of industrial sectors 1-4.In many of these applications, e.g., wastewater treatment and fermentation 3, 5, it is desirable that all solids within the system are fully suspended, thus maximizing ...

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Solid Suspension and Liquid Phase Mixing in Solid−Liquid ...

Solid Suspension and Liquid Phase Mixing in Solid−Liquid Stirred Tanks. Vivek Ranade. Related Papers. Computational Fluid Dynamics Simulation of Solid Suspension in a Gas−Liquid−Solid Mechanically Agitated Contactor. By Vivek Ranade. CFD modeling of gas–liquid–solid mechanically agitated contactor.

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Giuseppina Montante — Università di Bologna — Pubblicazioni

Carletti, CLAUDIO ALBERTO; Montante, GIUSEPPINA MARIA ROSA; De Blasio, Cataldo; Paglianti, Alessandro, Liquid mixing dynamics in slurry stirred tanks based on electrical resistance tomography, «CHEMICAL ENGINEERING SCIENCE», 2016, 152, pp. 478 - 487 [articolo]

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Liquid mixing dynamics in slurry stirred tanks based on ...

Whole-field data on the homogenization dynamics are collected with liquid only and with a mass ratio of suspended solid to liquid equal to 0.43. The liquid mixing time, which is often adopted as a measure of the intensity of mixing in turbulent stirred tanks, leads to quantitatively assess the significant difference in the scalar mixing process ...

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Liquid Mixing in Stirred Tanks - Chemical Engineering Page 1

Aug 01, 2019  A method of quantifying mixing according to a mixing index can evaluate and predict mixing intensity related to fluid velocities in stirred tanks. Various size stirred tanks are used to carry out an enormous variety of process objectives in nearly all of the chemical process industries (CPI). While the processes can be very different, the ...

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Improved mixing of solid suspensions in stirred tanks with ...

Abstract Mixing is an important unit operation in the process industry. Ensuring homogeneity of slurry or emulsion is critical for subsequent processing or to improve the efficacy of reactions, and heat/mass transfer. Mixing in stirred tanks is typically improved through baffles. While baffles are good at breaking vortices, they contribute to energy dissipation.

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A model of transient mixing in a stirred tank Semantic ...

Abstract A model describing two-dimensional transient mixing phenomena of a single-phase fluid within a stirred tank has been developed. The model employs a k − e turbulence model and uses Lagrangian tracer particles as indicators of mixing behavior. Calculations over a relatively coarse (20 × 30) mesh containing 4800 tracer particles are capable of producing a realistic depiction of slurry ...

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CFD simulations of stirred-tank reactors for gas-liquid ...

CFD simulations of stirred-tank reactors for gas-liquid and gas-liquid-solid systems using OpenFOAM® ... reactor and greatly limits the range of optical-based mea-surement techniques that can be applied. Computational fluid dynamics (CFD) simulation is another approach to study mixing and fluid dynamics in STRs. While, many single-phase CFD ...

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Experimental and CFD studies of solid–liquid slurry tank ...

DOI: 10.1016/S1003-6326(14)63395-1 Corpus ID: 54495451. Experimental and CFD studies of solid–liquid slurry tank stirred with an improved Intermig impeller @article{Zhao2014ExperimentalAC, title={Experimental and CFD studies of solid–liquid slurry tank stirred with an improved Intermig impeller}, author={H. Zhao and Z. Zhang and T. Zhang and Y. Liu and S. Gu and C. Zhang}, journal ...

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Computational fluid dynamics simulation and experimental ...

Sep 26, 2019  The suspension characteristics of ultrafine powder slurry in the stirred vessel were simulated by using computational fluid dynamics. The results show that the Rushton disk turbine impeller is more conducive to maintaining suspended homogeneity and circulation of slurry compared with the pitch blade turbine pumping up impeller and the pitch blade turbine pumping down impeller.

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Alessandro Paglianti — University of Bologna — Publications

Carletti, CLAUDIO ALBERTO; Montante, GIUSEPPINA MARIA ROSA; De Blasio, Cataldo; Paglianti, Alessandro, Liquid mixing dynamics in slurry stirred tanks based on electrical resistance tomography, «CHEMICAL ENGINEERING SCIENCE», 2016, 152, pp. 478 - 487 [Scientific article]

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Alessandro Paglianti — Università di Bologna — Pubblicazioni

Carletti, CLAUDIO ALBERTO; Montante, GIUSEPPINA MARIA ROSA; De Blasio, Cataldo; Paglianti, Alessandro, Liquid mixing dynamics in slurry stirred tanks based on electrical resistance tomography, «CHEMICAL ENGINEERING SCIENCE», 2016, 152, pp. 478 - 487 [articolo]

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(PDF) CFD simulation of liquid-phase mixing in solid ...

ConclusionsA computational fluid dynamics (CFD) based model has been developed to understand the complex interaction between solid suspension quality and the liquid-phase mixing process in a stirred slurry reactor. The two-fluid model along with the standard k. model of turbulence with mixture properties was used to simulate solid--liquid flows ...

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Solid Suspension and Liquid Phase Mixing in Solid−Liquid ...

Solid Suspension and Liquid Phase Mixing in Solid−Liquid Stirred Tanks. Vivek Ranade. Related Papers. Computational Fluid Dynamics Simulation of Solid Suspension in a Gas−Liquid−Solid Mechanically Agitated Contactor. By Vivek Ranade. CFD modeling of gas–liquid–solid mechanically agitated contactor.

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Effects of rotor and stator geometry on dissolution ...

Jun 11, 2020  Part 2—Mixing and emulsification. Chemical Engineering Research Design, 2017, 124: 321–329. CAS Article Google Scholar 16. Carletti C, Montante G, De Blasio C, Paglianti A. Liquid mixing dynamics in slurry stirred tanks based on electrical resistance tomography. Chemical Engineering Science, 2016, 152: 478–487

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Continuous Sampling of Floating Solids Suspension from a ...

Nov 03, 1997  Solid-liquid mixing performance in a stirred tank with a double punched rigid-flexible impeller coupled with a chaotic motor. Chemical Engineering and Processing: Process Intensification 2017, 118 , 37-46.

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Large Eddy Simulation of Turbulent Flow and Mixing Time in ...

Mixing time is a key parameter relevant to the scale-up and design of agitated reactors. Although there have been many published papers on mixing times in stirred tanks predicted by computational fluid dynamics (CFD), there are few reports on the large eddy simulation (LES) based prediction of the mixing time in a gas liquid stirred tank. In this work, an LES method based on an Eulerian ...

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