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Flow non-uniformities in packed beds: Effect on dispersion

✍ Scribed by R.G. Carbonell

Publisher
Elsevier Science
Year
1980
Tongue
English
Weight
879 KB
Volume
35
Category
Article
ISSN
0009-2509

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✦ Synopsis

A general equation IS denved for the dispersion coeflictent in a packed bed under condltlons of non-umform, one dlmenslonal flow Predlctlons of the theory are analyzed for the simple case of two conccntrx annular regions m a cylmdncal packed bed with dlffercnt void fractions Small differences m void fraction can lead to slgmficant changes m the dlsperslon coeffinent for the packed bed, both m lammar and turbulent flow reames The radial variations of the average residence time and spread of a pulse of nonreactive tracer are investigated

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