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Influence of pressure on the minimum fluidization velocity

Per Olowson ; Alf-Erik Almstedt (Institutionen för tillämpad mekanik ; Institutionen för termo- och fluiddynamik)
Chemical Engineering Science (0009-2509). Vol. 46 (1991), 2, p. 637-640.
[Artikel, refereegranskad vetenskaplig]

The influence of pressure on minimum fluidization velocity has been measured in a pressurized fluidized bed. Three different bed materials, corresponding to Geldart's group B or group D particles, were investigated at pressures between 0.1 and 1.6 MPa. The onset of fluidization was determined both visually and by pressure drop measurements. The results show a clear decrease in the minimum fluidization velocity with increasing pressure. The experimental results are in good accord with results obtained using the Ergun equation. A number of simplified correlations derived from the Ergun equation were also investigated. While many of these give a good description of the pressure effect, their accuracy varies significantly for different bed materials.

Denna post skapades 2006-08-28. Senast ändrad 2013-05-29.
CPL Pubid: 18277


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Institutioner (Chalmers)

Institutionen för tillämpad mekanik (1900-2017)
Institutionen för termo- och fluiddynamik (1989-2004)



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