Interrogation of a new inline multi-bin cyclone for sorting of produced powders of a lab-scale spray dryer

Sadegh Poozesh, Seid Mahdi Jafari, Nelson K. Akafuah

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Spray drying as a primary powder synthesis tool is not designed to separate particles during the process. Here we report on the simulation, optimization, and development of a customized multi-bin cyclone for a lab-scale spray dryer to segregate particles based on their sizes. Two criteria were chosen to optimize the number of bins, cutoff size, and pressure drop. Accordingly, a non-dimensional factor describing cyclone performance was introduced by investigating which five bins of powder collection were found to render a compromise between competing factors. Spray-dried powders were administered to the cyclone, and deposition of the particles in the bins was recorded. The cyclone could segregate particles with a size resolution as low as 4 μm. For each bin, the data on particle size, morphology, pore attributes, BET surface, and moisture content showed that even within a single batch, there is a broad span of particle properties.

Original languageEnglish
Pages (from-to)590-598
Number of pages9
JournalPowder Technology
StatePublished - Aug 2020

Bibliographical note

Funding Information:
The first author was funded by the DoD Grant entitled “Acquisition of a Lab-Scale Spray Dryer and a Particle Size Analyzer for the Improvement of Undergraduate and Graduate Research and Education Capabilities at Tuskegee University” with grant number of W911NF1910508 .

Publisher Copyright:
© 2020 Elsevier B.V.


  • CFD
  • Cyclone
  • Optimization
  • Particle engineering
  • Particle size
  • Spray drying

ASJC Scopus subject areas

  • General Chemical Engineering


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