In-line spatial filtering velocimetry for particle size and film thickness determination in fluidized-bed pellet coating processes

A study on the applicability of in-line measurements in the monitoring of the pellet coating process

“…Such results suggested that although SFT measures particle size in the dynamic fluid bed environment, it was capable to determine the pellet size with high precision and gave results correlating with the SIA. The results confirm the findings of Folttmann et al in a recently published article comparing SFT to Dynamic image analysis (Folttmann et al, 2014).…”

“…The influence of process parameters and key SFT measurement setting (Particle buffer) on measurement results is discussed. Authors concluded that Particle buffer setting has an important impact on measured particle size values (Folttmann et al, 2014). Although in-line particle size measurements could be very useful in pellet coating process for evaluating coating thickness and also undesirable processes, such as agglomeration and pellet attrition, there is still very little research in this area.…”

In-line particle size measurement and agglomeration detection of pellet fluidized bed coating by Spatial Filter Velocimetry

“…The application of the relatively new method of Spatial Filter Velocimetry (SFV) for the measuring of rate and chord length of the particles in fluidized bed granulation is already under investigation [9][10][11][12][13][14] but the use in fluidized bed coating is in the early stage [15,16]. In general the application of the SFV method in fluidized bed apparatus in laboratory, pilot and production scale is possible.…”

Investigations on the Capability of the Statistical Extinction Method for the Determination of Mean Particle Sizes in Concentrated Particle Systems

“…For this purpose, the Parsum GmbH developed a particle dispenser unit, which makes it suitable for particle concentrations up to 30% by volume for particles >1 mm and up to 12% by volume for particles <1 mm . The advanced spatial filtering velocimetry has been successfully applied, among others, to fluidized pellet coating and granulation and high shear mixing processes …”