The physical parameters of two products widely used in the confectionery industry – peanuts and cocoa beans have been studied. hydrodynamic characteristics these products, influencing fluidized bed roasting regime, determined. hydrodynamics a rotating-pulsed fluidization cited materials has examined. Dependences are derived for calculating pressure drops initial velocity particles during creati...

Composite zeolites impregnated with anhydrous salt particles are promising materials for use in domestic thermochemical energy storage (TCES), however they have limited power output. Fluidization has the potential to increase mass and heat transfer of TCES systems. In this study, a composite material LiX zeolite MgCl2 is produced. This batch then fluidized at different gas velocities study whet...

In order to investigate the high volume fraction problem of the solid phase in superfine unclassified backfilling pipeline transportation, characteristic parameters were obtained by fitting to test data with an R–R particle size distribution function; then, a Euler dense-phase DPM (Discrete phase model) model was established by applying solid–liquid two-phase flow theory and the kinetic theory ...

Vibration of gas-solid fluidized beds is often used to enable fluidization cohesive particles; however, it has also been shown reduce the minimum velocity (Umf). Here, we show via experiments that vibration can both Umf and bubbling (Umb) in Geldart Group B D particles. We observe reduced more than Umb, thereby creating a densely packed, bubble-free state when superficial gas between Umb. Umb d...

Currently, various industrial processes are carried out in fluidized bed reactors. Knowing its internal dynamics is fundamental for the intensification of these processes. This work assesses motion calcium alginate spheres under influence an upward fluid flow within a 1.2 m high and 0.1 inner diameter acrylic column. The liquid–solid was compared with gas–liquid–solid operation mode terms mixin...

Gas solid fluidized bed application has gained popularity as an excellent contacting device that is been widely used in thermo-chemical processes, drying food processing industries etc. due to its favorable heat transfer characteristics. Most of the outmoded fluidization activities reported confined with columnar/cylindrical shaped reactors. Conventionally, tapered/conical reactors are for ener...

We explore experimentally the fluidization of vertically agitated polymethylmethacrylate spheres wetted by liquid 4He . By controlling the temperature around the lambda point, we change the properties of the wetting liquid from a normal fluid (helium I) to a superfluid (helium II). For wetting by helium I, the critical acceleration for fluidization (Gamma_{c}) shows a steep increase close to th...

This work presents a computational study of flow behaviour in a bubbling fluidized bed polymerization reactor. The model is developed by using the commercial CFD code Fluent 6.3. The model is based on an Eulerian description of the gas and the particle phase. The effect of distributor shape on fluidization is analyzed using the inbuilt Gidaspow and Syamlal-O’brien Drag Model. The computational ...