An improved model for mass transfer in three-phase fluidized beds
β Scribed by Abdul-Fattah A. Asfour; Abdulghanni H. Nhaesi
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 596 KB
- Volume
- 45
- Category
- Article
- ISSN
- 0009-2509
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β¦ Synopsis
A model for describing mass transfer in three-uhase fluid&d beds has been develoDed and tested using experimental data. The presence of two distinct mass transfer zones led to the idea o> interfacing a plug flow model (PFM) with an axial dispersion model (ADM) at the separation boundary between these zones. The model has been validated for a wide range of operating conditions and proved to perform better than previous models.
π SIMILAR VOLUMES
Ah&a&-The rate of absorption with chemical reaction has been measured in a bed of solid spheres fluidized by upward flowing gas and irrigated by downward flowing liquid for different reactant concentrations in the liquid phase and different values of the liquid superficial velocity. Values of the ef
The volumetric gas-liquid mass transfer coefficient (KLa) and axial dispersion coefficient (Dz) of liquid phase have been studied in air-oxygen saturated water fluidized beds of 0.52 to 0.755 mm glass spheres in a plexiglass column. The effects of liquid velocity, gas velocity, particle size and loa
The local gas hold-up and average gas bubble velocity in three-phase fluidized beds (TPFBs) were measured by optical fiber probes. A radial gas dispersion model was applied to analyse the gas hold-up distribution in the TPFB. The gas dispersion was found high near the grid and the dispersion decreas