Identification of defluidization region in a gas-solid fluidized bed using a method based on pressure fluctuation measurements
Autor(a) principal: | |
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Data de Publicação: | 2009 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Brazilian Journal of Chemical Engineering |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322009000300009 |
Resumo: | Industrial applications that involve fluidized bed operations must prevent the undesirable phenomenon of partial or complete bed defluidization. Defluidization can be avoided by increasing the gas velocity and/or, in some cases, changing the solid feed conditions in the system, provided that the changes in the hydrodynamics of the flow are detected early enough. The use of a technique that can perform an early detection of the defluidization condition in industrial applications is important, in order to avoid the loss of efficiency or even an undesirable shutting down of the process. The objective of this work is to show the application of a method for early detection of the condition where the bed is tending to the defluidization, in a gas-solid fluidized bed flow. The method is based on pressure fluctuation measurements. Experimental tests are carried out using two solid particles: microcrystalline cellulose and sand. Results show that the proposed method is efficient in detecting the fluidization condition in a conventional bubbling bed regime. The potential of application of the technique is also shown for the control of the defluidization phenomenon in industry. |
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Brazilian Journal of Chemical Engineering |
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|
spelling |
Identification of defluidization region in a gas-solid fluidized bed using a method based on pressure fluctuation measurementsGas-solid fluidized bedDefluidizationPressure fluctuationsFourier TransformExponential Gaussian distributionIndustrial applications that involve fluidized bed operations must prevent the undesirable phenomenon of partial or complete bed defluidization. Defluidization can be avoided by increasing the gas velocity and/or, in some cases, changing the solid feed conditions in the system, provided that the changes in the hydrodynamics of the flow are detected early enough. The use of a technique that can perform an early detection of the defluidization condition in industrial applications is important, in order to avoid the loss of efficiency or even an undesirable shutting down of the process. The objective of this work is to show the application of a method for early detection of the condition where the bed is tending to the defluidization, in a gas-solid fluidized bed flow. The method is based on pressure fluctuation measurements. Experimental tests are carried out using two solid particles: microcrystalline cellulose and sand. Results show that the proposed method is efficient in detecting the fluidization condition in a conventional bubbling bed regime. The potential of application of the technique is also shown for the control of the defluidization phenomenon in industry.Brazilian Society of Chemical Engineering2009-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322009000300009Brazilian Journal of Chemical Engineering v.26 n.3 2009reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66322009000300009info:eu-repo/semantics/openAccessParise,M. R.Kurka,P. R. G.Taranto,O. P.eng2009-09-01T00:00:00Zoai:scielo:S0104-66322009000300009Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2009-09-01T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false |
dc.title.none.fl_str_mv |
Identification of defluidization region in a gas-solid fluidized bed using a method based on pressure fluctuation measurements |
title |
Identification of defluidization region in a gas-solid fluidized bed using a method based on pressure fluctuation measurements |
spellingShingle |
Identification of defluidization region in a gas-solid fluidized bed using a method based on pressure fluctuation measurements Parise,M. R. Gas-solid fluidized bed Defluidization Pressure fluctuations Fourier Transform Exponential Gaussian distribution |
title_short |
Identification of defluidization region in a gas-solid fluidized bed using a method based on pressure fluctuation measurements |
title_full |
Identification of defluidization region in a gas-solid fluidized bed using a method based on pressure fluctuation measurements |
title_fullStr |
Identification of defluidization region in a gas-solid fluidized bed using a method based on pressure fluctuation measurements |
title_full_unstemmed |
Identification of defluidization region in a gas-solid fluidized bed using a method based on pressure fluctuation measurements |
title_sort |
Identification of defluidization region in a gas-solid fluidized bed using a method based on pressure fluctuation measurements |
author |
Parise,M. R. |
author_facet |
Parise,M. R. Kurka,P. R. G. Taranto,O. P. |
author_role |
author |
author2 |
Kurka,P. R. G. Taranto,O. P. |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Parise,M. R. Kurka,P. R. G. Taranto,O. P. |
dc.subject.por.fl_str_mv |
Gas-solid fluidized bed Defluidization Pressure fluctuations Fourier Transform Exponential Gaussian distribution |
topic |
Gas-solid fluidized bed Defluidization Pressure fluctuations Fourier Transform Exponential Gaussian distribution |
description |
Industrial applications that involve fluidized bed operations must prevent the undesirable phenomenon of partial or complete bed defluidization. Defluidization can be avoided by increasing the gas velocity and/or, in some cases, changing the solid feed conditions in the system, provided that the changes in the hydrodynamics of the flow are detected early enough. The use of a technique that can perform an early detection of the defluidization condition in industrial applications is important, in order to avoid the loss of efficiency or even an undesirable shutting down of the process. The objective of this work is to show the application of a method for early detection of the condition where the bed is tending to the defluidization, in a gas-solid fluidized bed flow. The method is based on pressure fluctuation measurements. Experimental tests are carried out using two solid particles: microcrystalline cellulose and sand. Results show that the proposed method is efficient in detecting the fluidization condition in a conventional bubbling bed regime. The potential of application of the technique is also shown for the control of the defluidization phenomenon in industry. |
publishDate |
2009 |
dc.date.none.fl_str_mv |
2009-09-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322009000300009 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322009000300009 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0104-66322009000300009 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Brazilian Society of Chemical Engineering |
publisher.none.fl_str_mv |
Brazilian Society of Chemical Engineering |
dc.source.none.fl_str_mv |
Brazilian Journal of Chemical Engineering v.26 n.3 2009 reponame:Brazilian Journal of Chemical Engineering instname:Associação Brasileira de Engenharia Química (ABEQ) instacron:ABEQ |
instname_str |
Associação Brasileira de Engenharia Química (ABEQ) |
instacron_str |
ABEQ |
institution |
ABEQ |
reponame_str |
Brazilian Journal of Chemical Engineering |
collection |
Brazilian Journal of Chemical Engineering |
repository.name.fl_str_mv |
Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ) |
repository.mail.fl_str_mv |
rgiudici@usp.br||rgiudici@usp.br |
_version_ |
1754213173044445184 |