Minimum spouting velocity of flat-base spouted fluid bed

Monazam, Esmail R.; Breault, Ronald W.; Weber, Justin; Layfield, Ky

doi:10.1016/j.partic.2017.02.008

Title: Minimum spouting velocity of flat-base spouted fluid bed

Journal Article · 02 July 2017 · Particuology

DOI: https://doi.org/10.1016/j.partic.2017.02.008 · OSTI ID:1461084

Monazam, Esmail R. ^[1];

^[2]; Weber, Justin ^[2]; Layfield, Ky ^[1]

REM Engineering Services, PLLC, Morgantown, WV (United States)
National Energy Technology Lab. (NETL), Morgantown, WV (United States)

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/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.

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Research Organization:: NETL

Sponsoring Organization:: USDOE Office of Fossil Energy (FE)

Grant/Contract Number:: FE0004000

OSTI ID:: 1461084

Alternate ID(s):: OSTI ID: 1550444

Report Number(s):: NETL-PUB-20386; {"","Journal ID: ISSN 1674-2001"}

Journal Information:: Particuology, Journal Name: Particuology Journal Issue: C Vol. 36; ISSN 1674-2001

Country of Publication:: United States

Language:: English

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Numerical Study on the Gas–Solid Flow in a Spouted Bed Installed with a Controllable Nozzle and a Swirling Flow Generator Wu, Feng; Che, Xinxin; Huang, Zhenyu ACS Omega, Vol. 5, Issue 2 https://doi.org/10.1021/acsomega.9b02704	journal	January 2020
Experimental Study on Gas–Solid Flow in the Spouted Bed under Longitudinal Vortex Effect Wu, Feng; Che, Xinxin; Duan, Haojie ACS Omega, Vol. 4, Issue 20 https://doi.org/10.1021/acsomega.9b02920	journal	November 2019

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