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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]
+ Show Author Affiliations
  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); USDOE Office of Fossil Energy and Carbon Management (FECM)
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. doi:10.1016/j.partic.2017.02.008.
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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
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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.
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@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}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1016/j.partic.2017.02.008
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Citation Metrics:
Cited by: 16 works
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Figures / Tables:

Table 1 Table 1: Spouted and Spout-Fluidized Experimental Conditions
All figures and tables (20 total)
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Works referenced in this record:

Sewage sludge valorization by flash pyrolysis in a conical spouted bed reactor
journal, August 2015

Influence of temperature on biomass pyrolysis in a conical spouted bed reactor
journal, February 2012

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Multicycle Reduction and Oxidation of Different Types of Iron Oxide ParticlesApplication to Chemical-Looping Combustion
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Impact of Sodium and Sulfur Species on Agglomeration and Defluidization during Spouted Bed Gasification of South Australian Lignite
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    Works referencing / citing this record:

    Experimental Study on Gas–Solid Flow in the Spouted Bed under Longitudinal Vortex Effect
    journal, November 2019

    CFD Simulation and Optimization of Mixing Behaviors in a Spouted Bed with a Longitudinal Vortex
    journal, May 2019

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      Figures / Tables found in this record:

      Table 1 (p. 15)table
      Table 2 (p. 15)table
      Table 3 (p. 16)table
      Table 4 (p. 17)table
      Table 5 (p. 17)table
      Figure 1 (p. 18)figure
      Figure 2 (p. 19)figure
      Figure 3 (p. 20)figure
      Figure 4 (p. 20)figure
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      Figure 14 (p. 26)figure
      Figure 15 (p. 26)figure
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