Investigation of the electrification of polypropylene particles during the fluidization process

Computational fluid dynamics and electrostatic modeling of polymerization fluidized-bed reactors

“…In dense fluidized-bed systems, particle-particle collisions dominate and in dilute systems, such as risers the particle-wall collisions dominate charge generation. This phenomenon of charging is known as triboelectrification [9][10][11][12]. When the electrostatic charge on the polymer particles exceed a critical value, the electrostatic forces arising due to the gradient of the electric potential dominate the drag forces.…”

On the electrostatic equilibrium of granular flow in pneumatic conveying systems

“…In their experiments, excess electrostatic charge was dissipating near the top of the bed. Gajewski 6 set up a fluidized bed out of organic glass and then covered the inside with rings of copper sheet. Zones of electrostatic charge generation and dissipation were identified.…”

Characterization of flow regime transition and particle motion using acoustic emission measurement in a gas‐solid fluidized bed

“…[8][9] Stable operation can be achieved by controlling particle behaviors including the enhancement of particle mixing and motion, and the prevention of particle sintering and agglomeration. Many conventional methods using electrostatic, [10][11] pressure, [12][13] temperature, radiation and optic measurements 14 have been used to control stable fluidization state. However, it is very difficult to detect early the occurrence of particle sintering and agglomeration, because of its slow aggregation and heterogeneous size using the aforementioned conventional methods.…”