Fluidization and mixing behaviors of Geldart groups A, B and C particles assisted by vertical vibration in fluidized bed

Jae Rang Lee, Kang San Lee, Naim Hasolli, Young Ok Park, Kwan Young Lee, Yong Ha Kim

Research output: Contribution to journalArticle

Abstract

Geldart groups A (NiO – 1300 μm, green), B (MoO3 - 480 μm, white), and C (NiO – 30 μm, gray color and MoS2 – 25 μm, black) particles were used in a transparent, acrylic fluidized bed reactor. The experiment was carried out for four cases by setting the position of the particles injected in the reactor as a variable. For these cases, Geldart group C particles (which are typically difficult to fluidize) were included. When easily fluidizable particles were placed at the bottom of the fluidized bed reactor, particle circulation and bubbling occurred. Channeling occurred when there were particles that were difficult to fluidize. Homogeneous fluidization was possible with vibration when channeling occurred. With the increasing vibration frequency, the pressure drop increased, and the minimum fluidization velocity decreased. The occurrence of channeling via vibration resulted in a high mixing index and variations in the pressure drop.

Original languageEnglish
Article number107856
JournalChemical Engineering and Processing - Process Intensification
Volume149
DOIs
Publication statusPublished - 2020 Mar

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Keywords

  • Channeling
  • Fluidized bed reactor
  • Geldart group
  • Mixing
  • Vibration

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

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