Transient phenomena in fluidized beds when switching the fluidizing agent from one gas to another

K. Rietema; J. Hoebink

doi:10.1016/0032-5910(77)80016-8

Transient phenomena in fluidized beds when switching the fluidizing agent from one gas to another

K. Rietema, J. Hoebink

Department of Chemical Engineering and Chemistry

Research output: Contribution to journal › Article › Academic › peer-review

18 Citations (Scopus)

Abstract

The free-bubbling behaviour of a bed, fluidized with hydrogen, stops temporarily when the hydrogen flow is changed suddenly to an equal volumetric flow of nitrogen; large conglomerates of particles form and channelling occurs. Changing the gas flow in opposite direction causes no disturbance at all. This phenomenon has been studied experimentally with different gases. It is explained how the intensity of the phenomenon depends on both the viscosities and the molecular weights of the gases used.

Original language	English
Pages (from-to)	257-265
Number of pages	9
Journal	Powder Technology
Volume	18
Issue number	2
DOIs	https://doi.org/10.1016/0032-5910(77)80016-8
Publication status	Published - 1 Jan 1977

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