Spout Geometry in Shallow Spouted Beds with Solids of Different Density and Different Sphericity

2005 ◽  
Vol 44 (22) ◽  
pp. 8393-8400 ◽  
Author(s):  
María J. San José ◽  
Sonia Alvarez ◽  
Alvaro Ortiz de Salazar ◽  
Martin Olazar ◽  
Javier Bilbao
Keyword(s):  
Spouted Beds

Fluid and Solids Flow Affecting the Solids Circulation Rate in Spouted Beds with a Draft-Tube

2004 ◽  
Vol 37 (9) ◽  
pp. 1085-1091 ◽  
Author(s):  
Hirotsugu Hattori ◽  
Shinya Ito ◽  
Tomomi Onezawa ◽  
Kazutaka Yamada ◽  
Shinichi Yanai
Keyword(s):  
Draft Tube ◽  
Circulation Rate ◽  
Spouted Beds ◽  
Solids Circulation Rate

Stability of slot-rectangular spouted beds: Effect of slot configuration

2011 ◽  
Vol 89 (6) ◽  
pp. 1401-1407 ◽  
Author(s):  
Z. Chen ◽  
C. J. Lim ◽  
J. R. Grace
Keyword(s):  
Spouted Beds

Draft tube design based on a borescopic technique in conical spouted beds

2021 ◽  
Author(s):  
Ronaldo Correia de Brito ◽  
Mikel Tellabide ◽  
Aitor Atxutegi ◽  
Idoia Estiati ◽  
José Teixeira Freire ◽  
...  
Keyword(s):  
Draft Tube ◽  
Spouted Beds

Hydrodynamics of slot-rectangular spouted beds: Process intensification

2017 ◽  
Vol 121 ◽  
pp. 315-328 ◽  
Author(s):  
Shahab Golshan ◽  
Reza Zarghami ◽  
Navid Mostoufi
Keyword(s):  
Process Intensification ◽  
Spouted Beds

Thick coatings by thermo-chemical deposition in spouted beds

1983 ◽  
Vol 61 (3) ◽  
pp. 448-453 ◽  
Author(s):  
Norberto Piccinini ◽  
Giorgio Rovero
Keyword(s):  
Chemical Deposition ◽  
Spouted Beds ◽  
Thick Coatings

Simulation of Spouted Bed Using a Eulerian Multiphase Model

2005 ◽  
Vol 498-499 ◽  
pp. 270-277 ◽  
Author(s):  
Claudio Roberto Duarte ◽  
Valéria V. Murata ◽  
Marcos A.S. Barrozo
Keyword(s):  
Control Volume ◽  
Flow Behavior ◽  
Cfd Modeling ◽  
Gas Flows ◽  
Present Calculation ◽  
Multiphase Model ◽  
Spouted Bed ◽  
Particle Coating ◽  
Spouted Beds ◽  
Good Agreement

Spouted bed systems have emerged as very efficient fluid-particle contactors and find many applications in the chemical and biochemical industry. Some important applications of spouted beds include coal combustion, biochemical reactions, drying of solids, drying of solutions and suspensions, granulation, blending, grinding, and particle coating. An extensive overview can be found in Mathur and Epstein[1]. The pattern of solid and gas flows in a spouted bed was numerically simulated using a CFD modeling technique. The Eulerian-Eulerian multifluid modeling approach was applied to predict gas-solid flow behavior. A commercially available, control-volume-based code FLUENT 6.1 was chosen to carry out the computer simulations. In order to reduce computational times and required system resources, the 2D axisymmetric segregated solver was chosen. The typical flow pattern of the spouted bed was obtained in the present calculation. The simulated velocity and voidage profiles presented a good agreement qualitative and quantitative with the experimental results obtained by He et al. [4].

scholarly journals Influence of inlet air distributor geometry on the fluid dynamics of conical spouted beds: A CFD study

2018 ◽  
Vol 24 (4) ◽  
pp. 369-378 ◽  
Author(s):  
J.N.M. Batista ◽  
R.C. Brito ◽  
R. Béttega
Keyword(s):  
Fluid Dynamics ◽  
Cfd Simulation ◽  
Low Cost ◽  
Scale Up ◽  
Straight Tube ◽  
Spouted Bed ◽  
Bed Height ◽  
Spouted Beds ◽  
Wide Range ◽  
Solid Dynamics

The spouted bed presents limitations in terms of scale-up. Furthermore, its stability depends on its geometry as well as the properties of the fluid and solid phases. CFD provides an important tool to improve understanding of these aspects, enabling a wide range of information to be obtained rapidly and at low cost. In this work, CFD simulation was used to evaluate the effects of different inlet air distributors (Venturi and straight tube) and the effects of static bed height on the fluid and solid dynamics of a conical spouted bed. Simulations were performed using the two-dimensional Euler-Euler approach. In order to evaluate the fluid dynamics model, static pressure data obtained by simulation were compared with experimental data obtained with the Venturi distributor. The fluid and solid dynamics of the conical spouted bed were obtained by CFD simulation. The results showed that the pressure drop was lower for the straight tube air distributor, while the Venturi air distributor provided higher stability and a more homogenous air distribution at the bed entrance.

Operating and Peak Pressure Drops in Conical Spouted Beds Equipped with Draft Tubes of Different Configuration

2013 ◽  
Vol 53 (1) ◽  
pp. 415-427 ◽  
Author(s):  
Haritz Altzibar ◽  
Gartzen Lopez ◽  
Javier Bilbao ◽  
Martin Olazar
Keyword(s):  
Peak Pressure ◽  
Pressure Drops ◽  
Spouted Beds ◽  
Draft Tubes
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