Borescopy in pressurized gas-solid fluidized beds

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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.

Originele taal-2Engels
Pagina's (van-tot)3303-3311
Aantal pagina's9
TijdschriftAIChE Journal
Nummer van het tijdschrift9
StatusGepubliceerd - 1 sep 2018

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