Abstract
Choking is examined in terms of its definitions. Three choking initiation mechanisms are identified: type A (accumulative) choking occurs when solids start to accumulate at the bottom of the conveyor as the saturation gas carrying capacity is reached; type B (blower-/standpipe-induced) choking results from instabilities due to gas blower-conveyor or solids feeder-conveyor interactions where there is insufficient pressure or too limited solids feed capacity to provide the needed solids flow; and type C (classical) choking corresponds to a transition to severe slugging. Approaches for predicting the onset of each of these type of choking are recommended. Implications for regime transitions in fast fluidization are also identified.
| Original language | English |
|---|---|
| Pages (from-to) | 1077-1092 |
| Number of pages | 16 |
| Journal | International Journal of Multiphase Flow |
| Volume | 19 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Dec 1993 |
| Externally published | Yes |
Keywords
- choking
- dense-phase pneumatic transport
- dilute-phase pneumatic transport
- fast fluidization
- instability
ASJC Scopus subject areas
- Mechanical Engineering
- General Physics and Astronomy
- Fluid Flow and Transfer Processes