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Title: Fluidization of solids with CO{sub 2} at pressures from ambient to supercritical

Abstract

Beds of two granular materials belonging to groups A-B and B of the Geldart classification of powders were fluidized by carbon dioxide at 35 C and at 1 to 80 bar. Within this pressure interval, spanning from subcritical to supercritical conditions, the fluid density changes from the values typical of dilute gases to those of liquids. The hydrodynamic behavior of the bed changes accordingly. The bed behavior was investigated by visual inspection of the bed and by analysis of the time series of the pressure drop across the bed and of the heat-transfer coefficient between the bed and a hot wire probe. The boundaries between different captive fluidization regimes--incipient fluidization, onset of bubbling, and the incipient and fully established turbulent regime--were mapped in gas superficial velocity vs. fluid density phase planes for the two granular materials investigated.

Authors:
;
Publication Date:
Research Org.:
Univ. di Napoli Federico II (IT)
OSTI Identifier:
20080306
Resource Type:
Journal Article
Journal Name:
AIChE Journal (American Institute of Chemical Engineers)
Additional Journal Information:
Journal Volume: 46; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 0001-1541
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; FLUIDIZED BEDS; GRANULAR MATERIALS; CARBON DIOXIDE; SUPERCRITICAL STATE; FLUID MECHANICS

Citation Formats

Marzocchella, A., and Salatino, P. Fluidization of solids with CO{sub 2} at pressures from ambient to supercritical. United States: N. p., 2000. Web. doi:10.1002/aic.690460505.
Marzocchella, A., & Salatino, P. Fluidization of solids with CO{sub 2} at pressures from ambient to supercritical. United States. doi:10.1002/aic.690460505.
Marzocchella, A., and Salatino, P. Mon . "Fluidization of solids with CO{sub 2} at pressures from ambient to supercritical". United States. doi:10.1002/aic.690460505.
@article{osti_20080306,
title = {Fluidization of solids with CO{sub 2} at pressures from ambient to supercritical},
author = {Marzocchella, A. and Salatino, P.},
abstractNote = {Beds of two granular materials belonging to groups A-B and B of the Geldart classification of powders were fluidized by carbon dioxide at 35 C and at 1 to 80 bar. Within this pressure interval, spanning from subcritical to supercritical conditions, the fluid density changes from the values typical of dilute gases to those of liquids. The hydrodynamic behavior of the bed changes accordingly. The bed behavior was investigated by visual inspection of the bed and by analysis of the time series of the pressure drop across the bed and of the heat-transfer coefficient between the bed and a hot wire probe. The boundaries between different captive fluidization regimes--incipient fluidization, onset of bubbling, and the incipient and fully established turbulent regime--were mapped in gas superficial velocity vs. fluid density phase planes for the two granular materials investigated.},
doi = {10.1002/aic.690460505},
journal = {AIChE Journal (American Institute of Chemical Engineers)},
issn = {0001-1541},
number = 5,
volume = 46,
place = {United States},
year = {2000},
month = {5}
}