Hydrodynamic characteristics of bubble-induced three-phase inverse fluidized bed (BIFB)

Keying Ma, Xiliang Sun, Yuanyuan Shao, Mingyan Liu, Jesse Zhu

Research output: Journal PublicationArticlepeer-review

9 Citations (Scopus)


A new bubble-induced three-phase inverse fluidized bed (BIFB) is proposed, where particles lighter than water are fluidized downwards by upward flowing gas without net liquid flow due to the reduced net gas-liquid mixture density and the turbulence caused by bubble flow. Key advantages include uniform fluidization of particles, zero or low liquid flowrate, low energy consumption and easy re-fluidization, showing great potential in biochemical, bioprocess, food, environmental and petrochemical industry. In a 0.33 m diameter pilot-scale BIFB column, four flow regimes; initial fluidization gas velocity and complete fluidization gas velocity were identified, using particles of different diameters and densities. A new concept, the fluidization ratio, is devised to best describe the fluidization quality in BIFB.

Original languageEnglish
Article number115177
JournalChemical Engineering Science
Publication statusPublished - 14 Dec 2019
Externally publishedYes


  • Flow regimes
  • Fluidization ratio
  • Hydrodynamic characteristics
  • Phase holdup
  • Three-phase inverse fluidized bed

ASJC Scopus subject areas

  • Chemistry (all)
  • Chemical Engineering (all)
  • Industrial and Manufacturing Engineering


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