Drag force in random arrays of mono- and bidisperse spheres

Fluid-particle contact is essential in many processes in the chemical, petrochemical, metallurgical and food processing industry. A reactor type which is particularly successful in establishing a thorough contact between fluid and particles, and has excellent heat and mass transfer properties, is the fluidised bed reactor. In these reactors the interaction between fluid and particles (drag force) balances the gravity acting on the particles, with the effect that the particles `float¿ in the reactor, which enhances mixing properties

Improved Li-Ion Battery Performance by Coating Cathode Nano-Particles using Atomic Layer Deposition

The use of nanoparticles as a cathode in Li-ion batteries is very promising. However, many of the cathode materials that could be economically attractive suffer from degradation. Therefore, an objective is to stabilise the surface, in order to reduce the degradation. A setup was build to coat the nanoparticles by atomic layer deposition in a fluidised bed reactor. The first fluidisation results for the nanoparticles are presented in this paper