Borescopy in pressurized gas-solid fluidized beds

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

A borescopic technique was used for finding the effect of pressure on the hydrodynamics of gas-solid fluidized beds. The results showed that solids radial distribution may become more or less uniform with increasing pressure depending on the superficial gas velocity. Moreover, it is found that the solids volume fraction of the emulsion phase may decrease at relatively high pressures, only in the central region of the bed. Additionally, it is observed that with increasing pressure the bubble size generally decreased in the central regions and increased near the wall regions. This trend was more complicated at low excess gas velocities. The number of bubbles increased for the central regions and near the walls for all the performed experiments. However, this parameter showed a different trend at other radial positions.

LanguageEnglish
Pages3303-3311
JournalAIChE Journal
Volume64
Issue number9
DOIs
StatePublished - 1 Sep 2018

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Fluidized beds
Gases
Pressure
Hydrodynamics
Emulsions
Volume fraction
Experiments

Keywords

  • Borescopy
  • Effect of pressure
  • Experimental
  • Gas-solid fluidized bed
  • Image analysis

Cite this

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title = "Borescopy in pressurized gas-solid fluidized beds",
abstract = "A borescopic technique was used for finding the effect of pressure on the hydrodynamics of gas-solid fluidized beds. The results showed that solids radial distribution may become more or less uniform with increasing pressure depending on the superficial gas velocity. Moreover, it is found that the solids volume fraction of the emulsion phase may decrease at relatively high pressures, only in the central region of the bed. Additionally, it is observed that with increasing pressure the bubble size generally decreased in the central regions and increased near the wall regions. This trend was more complicated at low excess gas velocities. The number of bubbles increased for the central regions and near the walls for all the performed experiments. However, this parameter showed a different trend at other radial positions.",
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Borescopy in pressurized gas-solid fluidized beds. / Banaei, Mohammad; Dellaert, Rik; Deen, Niels G.; van Sint Annaland, Martin; Kuipers, Johannes A.M.

In: AIChE Journal, Vol. 64, No. 9, 01.09.2018, p. 3303-3311.

Research output: Contribution to journalArticleAcademicpeer-review

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T1 - Borescopy in pressurized gas-solid fluidized beds

AU - Banaei,Mohammad

AU - Dellaert,Rik

AU - Deen,Niels G.

AU - van Sint Annaland,Martin

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