Dispersed phase holdup in a pulsed disc and doughnut extraction column

Detalhes bibliográficos
Autor(a) principal: Torab-Mostaedi,M.
Data de Publicação: 2011
Outros Autores: Jalilvand,H., Outokesh,M.
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=S0104-66322011000200016
Resumo: Dispersed phase holdup has been measured in a 76 mm diameter pulsed disc and doughnut extraction column for three different liquid-liquid systems. The effects of operational variables such as pulsation intensity and dispersed and continuous phase flow rates on holdup have been investigated and found to be significant. The existence of three different operational regimes, namely mixer-settler, dispersion, and emulsion regimes, was observed when the energy input was changed. The results indicated that the characteristic velocity approach is applicable to this type of extraction column for analysis of holdup in the transition and emulsion regions. Empirical correlations are derived for prediction of the dispersed phase holdup in terms of the physical properties of the system and the operating variables in different operating regimes. Good agreement between prediction and experiments was found for all operating conditions investigated.
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spelling Dispersed phase holdup in a pulsed disc and doughnut extraction columnDispersed phase holdupPulsed disc and doughnut columnSlip velocityCharacteristic velocityDispersed phase holdup has been measured in a 76 mm diameter pulsed disc and doughnut extraction column for three different liquid-liquid systems. The effects of operational variables such as pulsation intensity and dispersed and continuous phase flow rates on holdup have been investigated and found to be significant. The existence of three different operational regimes, namely mixer-settler, dispersion, and emulsion regimes, was observed when the energy input was changed. The results indicated that the characteristic velocity approach is applicable to this type of extraction column for analysis of holdup in the transition and emulsion regions. Empirical correlations are derived for prediction of the dispersed phase holdup in terms of the physical properties of the system and the operating variables in different operating regimes. Good agreement between prediction and experiments was found for all operating conditions investigated.Brazilian Society of Chemical Engineering2011-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322011000200016Brazilian Journal of Chemical Engineering v.28 n.2 2011reponame:Brazilian Journal of Chemical Engineeringinstname:Associação Brasileira de Engenharia Química (ABEQ)instacron:ABEQ10.1590/S0104-66322011000200016info:eu-repo/semantics/openAccessTorab-Mostaedi,M.Jalilvand,H.Outokesh,M.eng2011-07-04T00:00:00Zoai:scielo:S0104-66322011000200016Revistahttps://www.scielo.br/j/bjce/https://old.scielo.br/oai/scielo-oai.phprgiudici@usp.br||rgiudici@usp.br1678-43830104-6632opendoar:2011-07-04T00:00Brazilian Journal of Chemical Engineering - Associação Brasileira de Engenharia Química (ABEQ)false
dc.title.none.fl_str_mv Dispersed phase holdup in a pulsed disc and doughnut extraction column
title Dispersed phase holdup in a pulsed disc and doughnut extraction column
spellingShingle Dispersed phase holdup in a pulsed disc and doughnut extraction column
Torab-Mostaedi,M.
Dispersed phase holdup
Pulsed disc and doughnut column
Slip velocity
Characteristic velocity
title_short Dispersed phase holdup in a pulsed disc and doughnut extraction column
title_full Dispersed phase holdup in a pulsed disc and doughnut extraction column
title_fullStr Dispersed phase holdup in a pulsed disc and doughnut extraction column
title_full_unstemmed Dispersed phase holdup in a pulsed disc and doughnut extraction column
title_sort Dispersed phase holdup in a pulsed disc and doughnut extraction column
author Torab-Mostaedi,M.
author_facet Torab-Mostaedi,M.
Jalilvand,H.
Outokesh,M.
author_role author
author2 Jalilvand,H.
Outokesh,M.
author2_role author
author
dc.contributor.author.fl_str_mv Torab-Mostaedi,M.
Jalilvand,H.
Outokesh,M.
dc.subject.por.fl_str_mv Dispersed phase holdup
Pulsed disc and doughnut column
Slip velocity
Characteristic velocity
topic Dispersed phase holdup
Pulsed disc and doughnut column
Slip velocity
Characteristic velocity
description Dispersed phase holdup has been measured in a 76 mm diameter pulsed disc and doughnut extraction column for three different liquid-liquid systems. The effects of operational variables such as pulsation intensity and dispersed and continuous phase flow rates on holdup have been investigated and found to be significant. The existence of three different operational regimes, namely mixer-settler, dispersion, and emulsion regimes, was observed when the energy input was changed. The results indicated that the characteristic velocity approach is applicable to this type of extraction column for analysis of holdup in the transition and emulsion regions. Empirical correlations are derived for prediction of the dispersed phase holdup in terms of the physical properties of the system and the operating variables in different operating regimes. Good agreement between prediction and experiments was found for all operating conditions investigated.
publishDate 2011
dc.date.none.fl_str_mv 2011-06-01
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=S0104-66322011000200016
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66322011000200016
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0104-66322011000200016
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.28 n.2 2011
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
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