Abstract
Group C particles, although deemed to be difficult to fluidize because of their cohesive nature, fluidize well with high bed expansion and therefore hold more gas in the bed after nano-modulation. Using the bed collapse test, the dense phase properties of those formed Group C+ and Group A particles were characterized. Group C+ particles exhibited much higher dense phase expansion and larger dense phase voidage than Group A particles, indicating more gas holdup in the dense phase available for intimate gas-solid contact. Therefore, Group C+ particles, with the extraordinary dense phase expansion and the large specific surface area, are significantly better for industrial processes, especially in gas-phase catalytic reactions. Maximum dense phase expansion (Ed,max) was defined as a factor for quantifying the expansion ability of the dense phase for different particles. Group C+ particles with greater Ed,max values signifies higher dense phase expansions, beneficial for gas-solid contact.
Original language | English |
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Article number | 115420 |
Journal | Chemical Engineering Science |
Volume | 214 |
DOIs | |
Publication status | Published - 16 Mar 2020 |
Externally published | Yes |
Keywords
- Bed collapse test
- Bubble holdup
- Dense phase expansion
- Group C particle fluidization
- Nanoparticle modulation
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering
- Industrial and Manufacturing Engineering