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Title: Transient Characterization of Type B Particles in a Transport Riser

Abstract

Simple and rapid dynamic tests were used to evaluate fluid dynamic behavior of granular materials in the transport regime. Particles with densities ranging from 189 to 2,500 kg/m3 and Sauter mean size from 61 to 812 μm were tested in a 0.305 m diameter, 15.5 m height circulating fluidized bed (CFB) riser. The transient tests involved the abrupt stoppage of solids flow for each granular material over a wide range gas flow rates. The riser emptying time was linearly related to the Froude number in each of three different operating regimes. The flow structure along the height of the riser followed a distinct pattern as tracked through incremental pressures. These results are discussed to better understand the transformations that take place when operating over various regimes. During the transients the particle size distribution was measured. The effects of pressure, particle size, and density on test performance are also presented.

Authors:
;  [1];
  1. (REM Engineering Services, Morgantown, WV)
Publication Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, and Morgantown, WV
Sponsoring Org.:
USDOE - Office of Fossil Energy (FE)
OSTI Identifier:
915487
Report Number(s):
DOE/NETL-IR-2007-147
TRN: US200817%%381
DOE Contract Number:
None cited
Resource Type:
Conference
Resource Relation:
Conference: 12th International Conference on Fluidization - New Horizons in Fluidization Engineering, Vancouver, BC, Canada, May 13-17, 2007
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; CIRCULATING SYSTEMS; FLUIDIZED BEDS; FROUDE NUMBER; GAS FLOW; GRANULAR MATERIALS; PARTICLE SIZE; PERFORMANCE; SOLIDS FLOW; FLUID MECHANICS; PRESSURE DEPENDENCE; DENSITY; TWO-PHASE FLOW

Citation Formats

Shadle, L.J., Monazam, E.R., and Mei, J.S.. Transient Characterization of Type B Particles in a Transport Riser. United States: N. p., 2007. Web.
Shadle, L.J., Monazam, E.R., & Mei, J.S.. Transient Characterization of Type B Particles in a Transport Riser. United States.
Shadle, L.J., Monazam, E.R., and Mei, J.S.. Mon . "Transient Characterization of Type B Particles in a Transport Riser". United States. doi:. https://www.osti.gov/servlets/purl/915487.
@article{osti_915487,
title = {Transient Characterization of Type B Particles in a Transport Riser},
author = {Shadle, L.J. and Monazam, E.R. and Mei, J.S.},
abstractNote = {Simple and rapid dynamic tests were used to evaluate fluid dynamic behavior of granular materials in the transport regime. Particles with densities ranging from 189 to 2,500 kg/m3 and Sauter mean size from 61 to 812 μm were tested in a 0.305 m diameter, 15.5 m height circulating fluidized bed (CFB) riser. The transient tests involved the abrupt stoppage of solids flow for each granular material over a wide range gas flow rates. The riser emptying time was linearly related to the Froude number in each of three different operating regimes. The flow structure along the height of the riser followed a distinct pattern as tracked through incremental pressures. These results are discussed to better understand the transformations that take place when operating over various regimes. During the transients the particle size distribution was measured. The effects of pressure, particle size, and density on test performance are also presented.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}

Conference:
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