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Title: 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 (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.

Authors:
 [1]; ORCiD logo [2];  [2];  [1]
  1. REM Engineering Services, PLLC, Morgantown, WV (United States)
  2. National Energy Technology Lab. (NETL), Morgantown, WV (United States)
Publication Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
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:
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. https://doi.org/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},
journal = {Particuology},
number = C,
volume = 36,
place = {United States},
year = {2017},
month = {7}
}

Journal Article:

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Cited by: 3 works
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Figures / Tables:

Table 1 Table 1: Spouted and Spout-Fluidized Experimental Conditions

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