Minimum spouting velocity of flat-base spouted fluid bed
Abstract
Experiments were performed on spout characteristics of a cylindrical spout-fluidized bed (I.D. = 10 cm) with different static heights and two materials (Al 2O 3 and high density polyethylene). Results of minimum spouting velocity obtained in this study were compared with reported correlations for both spouted and spout-fluidized beds. Considerable discrepancies were found between the values obtained using different model equations as well as with respect to experimental results. Based on the Mathur–Gishler correlation, a new correlation is proposed for calculating the minimum spouting velocity that introduces the ratio U/U mf. It was found that the minimum spouting velocity decreases with increasing fluidizing gas velocity (U/U mf). The pressure drop at the point of minimum spouting velocity is also correlated using this dimensionless group and is presented in this work. Finally, this investigation demonstrates that the use of correlations reported in the literature that focus primarily on conical bottom spouted beds are not applicable to flat-bottom spouted and spout-fluidized beds.
- Authors:
-
- REM Engineering Services, PLLC, Morgantown, WV (United States)
- National Energy Technology Lab. (NETL), Morgantown, WV (United States)
- Publication Date:
- Research Org.:
- NETL
- Sponsoring Org.:
- USDOE Office of Fossil Energy (FE)
- OSTI Identifier:
- 1461084
- Alternate Identifier(s):
- OSTI ID: 1550444
- Report Number(s):
- NETL-PUB-20386
Journal ID: ISSN 1674-2001
- Grant/Contract Number:
- FE0004000
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Particuology
- Additional Journal Information:
- Journal Volume: 36; Journal Issue: C; Journal ID: ISSN 1674-2001
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
Citation Formats
Monazam, Esmail R., Breault, Ronald W., Weber, Justin, and Layfield, Ky. Minimum spouting velocity of flat-base spouted fluid bed. United States: N. p., 2017.
Web. doi:10.1016/j.partic.2017.02.008.
Monazam, Esmail R., Breault, Ronald W., Weber, Justin, & Layfield, Ky. Minimum spouting velocity of flat-base spouted fluid bed. United States. https://doi.org/10.1016/j.partic.2017.02.008
Monazam, Esmail R., Breault, Ronald W., Weber, Justin, and Layfield, Ky. Mon .
"Minimum spouting velocity of flat-base spouted fluid bed". United States. https://doi.org/10.1016/j.partic.2017.02.008. https://www.osti.gov/servlets/purl/1461084.
@article{osti_1461084,
title = {Minimum spouting velocity of flat-base spouted fluid bed},
author = {Monazam, Esmail R. and Breault, Ronald W. and Weber, Justin and Layfield, Ky},
abstractNote = {Experiments were performed on spout characteristics of a cylindrical spout-fluidized bed (I.D. = 10 cm) with different static heights and two materials (Al2O3 and high density polyethylene). Results of minimum spouting velocity obtained in this study were compared with reported correlations for both spouted and spout-fluidized beds. Considerable discrepancies were found between the values obtained using different model equations as well as with respect to experimental results. Based on the Mathur–Gishler correlation, a new correlation is proposed for calculating the minimum spouting velocity that introduces the ratio U/Umf. It was found that the minimum spouting velocity decreases with increasing fluidizing gas velocity (U/Umf). The pressure drop at the point of minimum spouting velocity is also correlated using this dimensionless group and is presented in this work. Finally, this investigation demonstrates that the use of correlations reported in the literature that focus primarily on conical bottom spouted beds are not applicable to flat-bottom spouted and spout-fluidized beds.},
doi = {10.1016/j.partic.2017.02.008},
url = {https://www.osti.gov/biblio/1461084},
journal = {Particuology},
issn = {1674-2001},
number = C,
volume = 36,
place = {United States},
year = {2017},
month = {7}
}
Web of Science
Figures / Tables:

Figures / Tables found in this record: