Numerical simulation of mono-disperse droplet spray dryer under the influence of nozzle motion

Yucong Wei, Meng Wai Woo, Cordelia Selomulya, Winston Duo Wu, Jie Xiao, Xiao Dong Chen

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Abstract

With the increasing demand of uniform particles in the fields of medicine etc., the research on monodisperse droplet spray dryer (MDSD) becomes important. The drying efficiency of the current MDSD facility has to be improved to realize industrial applications. In this work, the influence of several kinds of nozzle movement on the drying process has been thoroughly explored by silico experiments. It is found that the velocity of the nozzle movement plays a key role in drying efficiency improvement. The movement of the nozzle leads to a wider distribution of the final moisture content of particles, and this effect becomes less significant with the increase of the velocity of nozzle motion. For all motion types under investigation, the circular motion is superior to the other motion types. It is revealed that the change of droplet dispersion state due to nozzle motion is the main factor that improves drying performance.

Original languageEnglish
Pages (from-to)93-105
Number of pages13
JournalPowder Technology
Volume355
DOIs
Publication statusPublished - 1 Oct 2019

Keywords

  • CFD
  • Mono-disperse droplet spray dryer
  • Optimization
  • Reaction engineering approach
  • Two-phase flow

Cite this