Fluidization stability vs. powder history of Geldart group C+ particles

Huaiming Du, Yandaizi Zhou, Dongqi Zhao, Yuanyuan Shao, Jesse Zhu

Research output: Journal PublicationArticlepeer-review

Abstract

Geldart Group C particles with the addition of nanoparticles (Group C+) show a better flowability and fluidization quality. The stability of these Group C+ particles with different nanoparticle concentrations were systematically examined in this work, including the flow properties, the particle size distribution (PSD), and the fluidization behaviors with the fluidizing time. Although the flowability, PSD, and fluidization behaviors for Group C+ particles fluctuated with the fluidizing time, those became more stable after fluidizing for 1–2 h. The increase of the nanoparticle concentration significantly improved the stability of these behaviors for Group C+ particles. Group A particles showed more stable behaviors with the fluidizing time than Group C+ particles, and nanoparticles had a little effect on the stability. In addition, Group C+ particles exhibited much better fluidization behaviors, including higher bed expansion and higher dense phase expansion, than Group A particles, contributing to better gas-solid contact.

Original languageEnglish
Pages (from-to)423-430
Number of pages8
JournalPowder Technology
Volume384
DOIs
Publication statusPublished - May 2021
Externally publishedYes

Keywords

  • Flowability
  • Fluidization
  • Group C particles
  • Nanoparticles
  • Powder history

ASJC Scopus subject areas

  • Chemical Engineering (all)

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