Axial mixing of resin beads in a gas-solid fluidized bed

Yong Chil Seo, Myung Han Ko, Yong Kang

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2 Citations (Scopus)


As a first stage of studies on the development of a fluidized bed incinerator for radioactive spent ion-exchange resins, the axial mixing characteristics of anion exchange resin beads and glass beads in a fluidized bed were investigated. The extent of axial solid mixing could be well characterized with a diffusion model and a global mixing index under various experimental conditions such as excess air velocities, size differences of particles and concentrations of resins. It was found that a certain extent of mixing or segregation was reached after 90 s. Axial diffusion coefficients are varing from 1 to 5 cm2/s in this experimental ranges. The best conditions to incinerate anion resin beads with glass beads as bed materials in the gas-solid fluidized bed system, were 30 wt% of resins in overall composition and excess air velocity over 8 cm/s with glass beads having an averaged diameter of 320 μm.

Original languageEnglish
Pages (from-to)212-218
Number of pages7
JournalKorean Journal of Chemical Engineering
Issue number4
Publication statusPublished - 1992 Oct

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)


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