Fluidization behavior of vibrated and aerated beds of starch powders

Siti Masrinda Tasirin, Nornizar Anuar

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Batch experimental work on the fluidization hydrodynamic and entrainment phenomena of cohesive starch powders was studied. Results show that fluidization can be realized as vibration break particle- particle bond in the bed. The higher Umf values compared to predictions indicate the formation of agglomerates in the bed. This has increased the residence time of fines to reduce material loss by entrainment. It was found that using starch powders as feed materials, entrainment was only in the range of 0.5-1.7% of the total fines (should be entrained) in the bed. As has also been found by other workers, the entrainment rate constants of group C decrease as particle size decreases. By adapting the criterion proposed by Rietema (1984) as well as Ma and Kato (1998), it was found in this case that the critical cohesion number, Ncnh* is 19.

Original languageEnglish
Pages (from-to)1251-1258
Number of pages8
JournalJournal of Chemical Engineering of Japan
Volume34
Issue number10
DOIs
Publication statusPublished - Oct 2001

Fingerprint

Fluidization
Starch
Powders
Rate constants
Hydrodynamics
Particle size

Keywords

  • Elutriation rate constant
  • Entrainment
  • Fluidization
  • Group C
  • Vibration

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

Fluidization behavior of vibrated and aerated beds of starch powders. / Tasirin, Siti Masrinda; Anuar, Nornizar.

In: Journal of Chemical Engineering of Japan, Vol. 34, No. 10, 10.2001, p. 1251-1258.

Research output: Contribution to journalArticle

Tasirin, Siti Masrinda ; Anuar, Nornizar. / Fluidization behavior of vibrated and aerated beds of starch powders. In: Journal of Chemical Engineering of Japan. 2001 ; Vol. 34, No. 10. pp. 1251-1258.
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