Gas flow through a fluid&d bed is normally streamline and the pattern of flow depends on the bubbles within the bed and their velocities relative to gas. When the gas velocity for fluidization is low compared with the bubble velocity (as in beds of fine particles) a region of gas circulation or a "c
On the formation of bubbles in gas-particulate fluidized beds
β Scribed by Fanucci, Jerome B.; Ness, Nathan; Yen, Ruey-Hor
- Book ID
- 120109537
- Publisher
- Cambridge University Press
- Year
- 1979
- Tongue
- English
- Weight
- 280 KB
- Volume
- 94
- Category
- Article
- ISSN
- 0022-1120
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
The successive formation of gas bubbles on the gas distributor of a multi-orifice plate in two-dimensional air-fluidized beds was studied both theoretically and experimentally. A brief theory for the initial bubble formation, which reflects the effects of fluidized particles, was developed based on
## AbstracbIn gas-fluidized beds bubbling starts when the voids formed by the oscillating bottom layer of the bed exceed a minimal size. The so-called vibration criterion derived predicts the porosity at the bubble point in close agreement with the experimental data. Comparison of the other criter
Harrison and Leung model for spherical bubble formation in fluid&d beds has been extended to account for the dynamics of the emulsion phase. The simplified Davidson-Harrison model is used to obtain the gas and particle velocities in the emulsion phase sad includes the effect of the bubble oressure.