Hydrodynamics of a Gas-Solid Fluidized Bed at Elevated Temperatures Using the Radioactive Particle Tracking Technique

Hydrodynamics of a Gas-Solid Fluidized Bed at Elevated Temperatures Using the Radioactive Particle Tracking Technique

Effect of temperature on hydrodynamics of bubbling gas-solid fluidized beds was investigated.  Experiments were carried out in the range of 25-600 ºC and different superficial gas velocities in the range of 0.17-0.78 m/s with sand particles. Time-position trajectory of particles was obtained by radi...

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Main Authors: Shabnam Sanaei, Navid Mostoufi, Ramin Radmanesh, Rahmat Sotudeh Gharebagh, Jamal Chaouki
Format: Article
Language:English
Published: Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR 2012-06-01
Series:Iranian Journal of Chemistry & Chemical Engineering
Subjects:
fluidized bed
high temperature
hydrodynamics
radioactive particle tracking
Online Access:http://www.ijcce.ac.ir/article_5991_223197ed0797ef7d481054e52bff74f4.pdf
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spelling doaj-1a6e9aef1d674c6cbd96623f783892df2020-11-25T03:34:56ZengIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry & Chemical Engineering 1021-99861021-99862012-06-0131265705991Hydrodynamics of a Gas-Solid Fluidized Bed at Elevated Temperatures Using the Radioactive Particle Tracking TechniqueShabnam Sanaei0Navid Mostoufi1Ramin Radmanesh2Rahmat Sotudeh Gharebagh3Jamal Chaouki4School of Chemical Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563 Tehran, I.R. IRANSchool of Chemical Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563 Tehran, I.R. IRANDepartment of Chemical Engineering, Ecole Polytechnique de Montreal, P.O. Box 6075 Station Centre-Ville, Montreal, Quebec, CANADASchool of Chemical Engineering, College of Engineering, University of Tehran, P.O. Box 11155-4563 Tehran, I.R. IRANDepartment of Chemical Engineering, Ecole Polytechnique de Montreal, P.O. Box 6075 Station Centre-Ville, Montreal, Quebec, CANADAEffect of temperature on hydrodynamics of bubbling gas-solid fluidized beds was investigated.  Experiments were carried out in the range of 25-600 ºC and different superficial gas velocities in the range of 0.17-0.78 m/s with sand particles. Time-position trajectory of particles was obtained by radioactive particle tracking technique. These data were used for determination of mean velocities of upward-moving (including bubble wake and ascending clusters) and downward-moving (descending clusters) particles. It was found that the upward velocity increases by increasing temperature up to 300 ºC, however, it decreases by further increase in temperature. Due to the wall effect, there is no significant change in the mean velocity of downward-moving clusters. The change in hydrodynamic parameters with temperature can be a consequence of changing physical properties of the bed which have been represented by Reynolds number in this study.http://www.ijcce.ac.ir/article_5991_223197ed0797ef7d481054e52bff74f4.pdffluidized bedhigh temperaturehydrodynamicsradioactive particle tracking
collection DOAJ
language English
format Article
sources DOAJ
author Shabnam Sanaei
Navid Mostoufi
Ramin Radmanesh
Rahmat Sotudeh Gharebagh
Jamal Chaouki
spellingShingle Shabnam Sanaei
Navid Mostoufi
Ramin Radmanesh
Rahmat Sotudeh Gharebagh
Jamal Chaouki
Hydrodynamics of a Gas-Solid Fluidized Bed at Elevated Temperatures Using the Radioactive Particle Tracking Technique
Iranian Journal of Chemistry & Chemical Engineering
fluidized bed
high temperature
hydrodynamics
radioactive particle tracking
author_facet Shabnam Sanaei
Navid Mostoufi
Ramin Radmanesh
Rahmat Sotudeh Gharebagh
Jamal Chaouki
author_sort Shabnam Sanaei
title Hydrodynamics of a Gas-Solid Fluidized Bed at Elevated Temperatures Using the Radioactive Particle Tracking Technique
title_short Hydrodynamics of a Gas-Solid Fluidized Bed at Elevated Temperatures Using the Radioactive Particle Tracking Technique
title_full Hydrodynamics of a Gas-Solid Fluidized Bed at Elevated Temperatures Using the Radioactive Particle Tracking Technique
title_fullStr Hydrodynamics of a Gas-Solid Fluidized Bed at Elevated Temperatures Using the Radioactive Particle Tracking Technique
title_full_unstemmed Hydrodynamics of a Gas-Solid Fluidized Bed at Elevated Temperatures Using the Radioactive Particle Tracking Technique
title_sort hydrodynamics of a gas-solid fluidized bed at elevated temperatures using the radioactive particle tracking technique
publisher Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR
series Iranian Journal of Chemistry & Chemical Engineering
issn 1021-9986
1021-9986
publishDate 2012-06-01
description Effect of temperature on hydrodynamics of bubbling gas-solid fluidized beds was investigated.  Experiments were carried out in the range of 25-600 ºC and different superficial gas velocities in the range of 0.17-0.78 m/s with sand particles. Time-position trajectory of particles was obtained by radioactive particle tracking technique. These data were used for determination of mean velocities of upward-moving (including bubble wake and ascending clusters) and downward-moving (descending clusters) particles. It was found that the upward velocity increases by increasing temperature up to 300 ºC, however, it decreases by further increase in temperature. Due to the wall effect, there is no significant change in the mean velocity of downward-moving clusters. The change in hydrodynamic parameters with temperature can be a consequence of changing physical properties of the bed which have been represented by Reynolds number in this study.
topic fluidized bed
high temperature
hydrodynamics
radioactive particle tracking
url http://www.ijcce.ac.ir/article_5991_223197ed0797ef7d481054e52bff74f4.pdf
work_keys_str_mv AT shabnamsanaei hydrodynamicsofagassolidfluidizedbedatelevatedtemperaturesusingtheradioactiveparticletrackingtechnique
AT navidmostoufi hydrodynamicsofagassolidfluidizedbedatelevatedtemperaturesusingtheradioactiveparticletrackingtechnique
AT raminradmanesh hydrodynamicsofagassolidfluidizedbedatelevatedtemperaturesusingtheradioactiveparticletrackingtechnique
AT rahmatsotudehgharebagh hydrodynamicsofagassolidfluidizedbedatelevatedtemperaturesusingtheradioactiveparticletrackingtechnique
AT jamalchaouki hydrodynamicsofagassolidfluidizedbedatelevatedtemperaturesusingtheradioactiveparticletrackingtechnique
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