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Analysis of volume change effects in a fluidized bed catalytic reactor

✍ Scribed by Ching-Yeh Shiau; Chin-Jou Lin

Publisher
Wiley (John Wiley & Sons)
Year
2007
Tongue
English
Weight
592 KB
Volume
56
Category
Article
ISSN
0268-2575

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✦ Synopsis

A mathematical model based on the concept of an improved bubble assemblage model is developed for calculating the conversion of a reaction system involving a volume change in fluidized beds. The influence of volume change on the hydrodynamic behavior of gas in the bed, such as bubble size variation, superficial gas velocity change, and volume fraction occupied by each phase, is also investigated. It is found that increasing stoichiometric coefficient values results in larger bubble size, higher superficial gas velocities, higher crossflow rate between emulsion phase and bubble phase, and greater volume fraction of bubble phase, but smaller volume fraction occupied by the emulsion phase as well as lower conversions.

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