numerical study of particle mixing in a labscale screw

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Numerical study of particle mixing in a lab-scale screw ...

Feb 15, 2017  1. Introduction. Screw conveyors/mixers are often used in solid handling processes in industries such as pharmaceutical production, food processing, mineral processing, construction and renewable energy production , , .Usually single- or double-screws are installed in a housing, and the rotation of the screw(s) results in transportation and mixing of the solid bulk materials.

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Numerical study of particle mixing in a lab-scale screw ...

This study employs the discrete element method (DEM) to simulate particulate flow and investigate mixing performance of a lab-scale double screw mixer. The simulation employs polydispersed biomass and glass bead particles based on experiments conducted in previous studies.

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PowderTechnology Numericalstudyofparticlemixinginalab ...

ing performance of a lab-scale double screw mixer. The simulation employs polydispersed biomass and ... Solid particle mixing processes have been analyzed based on ... ing the mixing degree in a ...

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Numerical study on particle mixing in a double-screw ...

Jun 15, 2019  In this paper, we quantitatively study the particle mixing in a double-screw conical mixer by DEM with particle number from 0.5 to 1.1 million. Detailed information of the granular flow in the mixer can be obtained. To the best of our knowledge, this paper is the first DEM simulation to investigate the particle mixing in this kind of mixer.

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Numerical study on particle mixing in a double-screw ...

Request PDF Numerical study on particle mixing in a double-screw conical mixer The double-screw conical mixer, as a mixing device, has been widely used in lots of industries for its high ...

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PowderTechnology Numericalstudyofparticlemixinginalab ...

ing performance of a lab-scale double screw mixer. The simulation employs polydispersed biomass and ... Solid particle mixing processes have been analyzed based on ... ing the mixing degree in a ...

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Particle-scale modeling of heat transfer in a double screw ...

Particle residence time distribution (RTD) and mixing degree (M) along the axial direction were investigated. F, Qi, T.J. Heindel, M. M. Wright, Numerical study of particle mixing in a lab-scale screw mixer using the discrete element method, Powder Technology, 2016. (under review) Simulation carried out by LIGGGTHS

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A non-sampling mixing index for multicomponent mixtures ...

Sep 01, 2017  Numerical study of particle mixing in a lab-scale screw mixer using the discrete element method Powder Technol. , 308 ( 2017 ) , pp. 334 - 345 Article Download PDF View Record in Scopus Google Scholar

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Particle mixing: 43 Research Articles

Numerical study of particle mixing in a lab-scale screw mixer using the discrete element method Fulltext Access 36 Pages 2017 Mixing behaviors in an industrial-scale spout-fluid mixer by 3D CFD-TFM

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Numerical study of the mixing process of binary-density ...

May 01, 2021  Numerical study of particle mixing in a double-screw conical mixer Powder Technol. , 352 ( 2019 ) , pp. 193 - 208 Article Download PDF View Record in Scopus Google Scholar

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Analysis of flow behavior of size distributed spherical ...

Apr 01, 2021  Numerical study of particle mixing in a lab-scale screw mixer using the discrete element method Powder Technol. , 308 ( 2017 ) , pp. 334 - 345 Article Download PDF View Record in Scopus Google Scholar

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Powder Technology Vol 308, Pages 1-478 (15 February 2017 ...

Mixing quality in mono- and bidisperse systems under the influence of particle shape: A numerical and experimental study K. Vollmari, T. Oschmann, H. Kruggel-Emden Pages 101-113

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祁风雷 - hfut.cn

Nov 14, 2018  Particle scale modeling of heat transfer in granular flows in a double screw reactor. Powder Technology, 335, 18-34. Qi, F., Heindel, T. J., Wright, M. M.* (2017). Numerical study of particle mixing in a lab-scale screw mixer using the discrete element method. Powder Technology, 308, 334-345. Qi, F., Wright, M.* (2016). A novel optimization ...

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Chemical Engineering Journal Pharmaceutical Granulation ...

select article Labscale fluidized bed granulator instrumented with non-invasive process monitoring devices. ... select article Mixing of a wet granular medium: Effect of the particle size, the liquid and the granular compacity on the intensity consumption ... select article Numerical study of the effects of particle size and polydispersity on ...

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Journal Articles CenUSA Bioenergy

Particle scale modeling of heat transfer in granular flows in a double screw reactor. Powder Technology 335: 18-34. ... T.J. Heindel, M. Mba Wright. 2017. Numerical study of particle mixing in a labscale screw mixer using the discrete element method. Powder Technol. 308: 334-345.

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A DEM modeling of biomass fast pyrolysis in a double screw ...

[6] F. Qi, T. J. Heindel, M. M. Wright, Numerical study of particle mixing in a lab-scale screw mixer using the discrete element method, Powder Technology 308 (2017) 334–345. Title

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Numerical simulation of a simplified, transient, 2D, non ...

Mar 05, 2019  Numerical simulation of a simplified, transient, 2D, non-reactive heat transfer model of a lab-scale fixed-bed pyrolysis reactor ... CH with PS lower than 250 µm where mixed with 2 mm diameter PE pellets in a screw mixing machine until a homogenous mixture was obtained, CH and PS’s masses were previously measured for appropriate mass ...

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Numerical Analysis of Solids Mixing in Pressurized ...

Jan 06, 2010  In the production and processing of granular matter, mixing of solids plays an important role. Granular materials such as sand, polymeric particles, and fertilizers are processed in different apparatuses such as fluidized beds, rotary kilns, and spouted beds. In the operation of these apparatuses, proper mixing is essential, as it helps to prevent the formation of hot spots, off

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An improved contact method for quantifying the mixing of a ...

Jan 31, 2021  When two granular phases are brought into motion in a rotating drum, a competition of mixing and segregation occurs. Several image analysis methods have been used to quantify the mixing. In this work, a modification of the contact method, originally proposed by Van Puyvelde et al. (Powder Technol. 106, 183–191 (1999)), is suggested to allow evaluation of the mixing index for each

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A DEM modeling of biomass fast pyrolysis in a double screw ...

[6] F. Qi, T. J. Heindel, M. M. Wright, Numerical study of particle mixing in a lab-scale screw mixer using the discrete element method, Powder Technology 308 (2017) 334–345. Title

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Theoretical Studies of the Interaction between Screw ...

Feb 18, 2021  mixing in a double-screw mixer. In the paper [36], Mihailova et al. demonstrated using ... dimensionless screw pitch, and particle size were investigated and compared ... According to the presented motivation, the purpose of this work is to study the interaction between the screw surface of the mixer screw and the material.

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Fenglei QI Research Associate PhD University of ...

Numerical study of particle mixing in a lab-scale screw mixer using the discrete element method. Article. ... The numerical model used the distributed resistance method along with the concept of ...

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Experimental study and evaluation of mixing mechanism and ...

with a screw diameter of 25mm and a length- to-diameter ratio (L/D) of 40 was set for the comparison. The extruders and screw configurations are shown in Figures3 and 4. The positions of kneading blocks and reverse elements for two extruders were designed similar for good comparison. The equipments used in this study were as follows: Drying

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An improved contact method for quantifying the mixing of a ...

Jan 31, 2021  When two granular phases are brought into motion in a rotating drum, a competition of mixing and segregation occurs. Several image analysis methods have been used to quantify the mixing. In this work, a modification of the contact method, originally proposed by Van Puyvelde et al. (Powder Technol. 106, 183–191 (1999)), is suggested to allow evaluation of the mixing index for each

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Mixing Enhancement of Wheat Granules in a Hopper Bottom ...

mixing of wheat granules in a small-scaled hopper base screw mixer. A screw-mated-horizontal-ploughs has been utilized to improve the agitation of grains rather than a simple screw. 1, 2 and 4 mated ploughs to the screw axle has been used, also the tilt angle of the 4 mated ploughs case has been varied as follows; 20°, 45° and 70° then ...

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Theoretical Studies of the Interaction between Screw ...

Mixing is one of the most commonly used processes in food, animal feed, chemical, cosmetic, etc., industries. It is supposed to provide high-quality homogenous, nutritious mixtures. To provide appropriate mixing of materials while maintaining the process high efficiency and low energy consumption it is crucial to explore and describe the material flow caused by the movement of mixing elements ...

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Influence of initial conditions on distributive mixing in ...

mixing that warrants study. We use Poincare´ sections to identify chaotic flow fea-tures in a twin-flight single-screw extruder and focus on these regions to analyze the influence of initial conditions on the minor component distribution in the system. We quantify distributive mixing by means of Renyi entropies (Wang et al., 2001, 2003).

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Assessment of blending performance of pharmaceutical ...

Abstract This study proposes a new sample-independent mixing index, termed the Coefficient of Blending Performance (CBP), for monitoring the formation of undesired API (Active Pharmaceutical Ingredient) agglomerates in continuous mixing processes. The proposed index is examined for the blending of pharmaceutical powders in a simulated twin-screw mixer using Discrete Element Method

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[PDF] A non-sampling mixing index for multicomponent ...

Abstract Uniform mixing is crucial for different types of molecules, powders, and materials in several chemical, mineral, cement, and drug companies. However, there is no effective index to evaluate the uniformity of mixing of multiple components. This study proposes a non-sampling mixing index (SMI) that is applicable to both multiple mixtures with more than two components as well as binary ...

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Impact of screw configuration on the particle size ...

The aim of the current study was to evaluate the impact of granulator screw configuration on the PSD of granules produced by TSG. Experiments were performed using a 25 mm co-rotating twin screw granulator, being part of the ConsiGma™-25 system (a fully continuous from-powder-to-tablet manufacturing line from GEA Pharma Systems).

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Computational study of particle distribution development ...

Feb 08, 2021  The use of downer reactors (gas-solid co-current downward flow) in the Fluid Catalytic cracking (FCC) process for the upgrading of heavy crude oil into more valuable products has gradually become more common in the last decades. This kind of reactor is characterized by having homogeneous axial and radial flow structures, no back mixing, and shorter residence times as compared with the

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Mixing (process engineering) - Wikipedia

In industrial process engineering, mixing is a unit operation that involves manipulation of a heterogeneous physical system with the intent to make it more homogeneous.Familiar examples include pumping of the water in a swimming pool to homogenize the water temperature, and the stirring of pancake batter to eliminate lumps (deagglomeration).. Mixing is performed to allow heat and/or mass ...

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Colored particle tracking method for mixing analysis of ...

May 13, 2004  A systematic method of mixing analysis was proposed to carry out direct numerical simulations of chaotic mixing in micromixers with a periodic mixing protocol. Instead of solving a mass transport equation, the colored particle tracking was employed to visualize and quantify the mixing of two different fluids.

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