Modeling and simulation of an industrial slaker reactor

Detalhes bibliográficos
Autor(a) principal: Andreola, Ricardo
Data de Publicação: 2008
Outros Autores: Vieira, Osvaldo, Santos, Onélia Aparecida Andreo dos, Jorge, Luiz Mario de Matos
Tipo de documento: Artigo
Idioma: por
Título da fonte: Acta scientiarum. Technology (Online)
Texto Completo: http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/3051
Resumo: White liquor used in cellulose digesters is produced by the causticizing process that employs a reactor system composed of two main parts: a mixing slaker reactor followed by causticizing reactors. At the slaker reactor, calcium hydroxide is produced, according to the reaction: CaO(s) + H2O(1) → Ca(OH) 2 (s). Simultaneously a causticizing reaction occurs with the formation of sodium hydroxide: Na2CO3 (aq) + Ca(OH) 2 (s) → 2 NaOH(aq) + CaCO3 (s). The latter takes place along several mixing reactors connected in series. An initial step towards building this dynamic mathematic model was taken and tested for the Klabin Paraná Papéis mill slaker reactor, established in Brazil, for modeling purposes. Simulations of the dynamic model at process conditions show that it was able to reproduce the main characteristics of the process. Close agreement with plant measurements was obtained by adjusting one kinetic parameter.
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spelling Modeling and simulation of an industrial slaker reactorModelagem e simulação de um reator industrial de apagamentocaustificaçãoapagamentomodelagem3.06.00.00-6 Engenharia QuímicaWhite liquor used in cellulose digesters is produced by the causticizing process that employs a reactor system composed of two main parts: a mixing slaker reactor followed by causticizing reactors. At the slaker reactor, calcium hydroxide is produced, according to the reaction: CaO(s) + H2O(1) → Ca(OH) 2 (s). Simultaneously a causticizing reaction occurs with the formation of sodium hydroxide: Na2CO3 (aq) + Ca(OH) 2 (s) → 2 NaOH(aq) + CaCO3 (s). The latter takes place along several mixing reactors connected in series. An initial step towards building this dynamic mathematic model was taken and tested for the Klabin Paraná Papéis mill slaker reactor, established in Brazil, for modeling purposes. Simulations of the dynamic model at process conditions show that it was able to reproduce the main characteristics of the process. Close agreement with plant measurements was obtained by adjusting one kinetic parameter.O sistema de reatores de caustificação é responsável pela geração do licor branco e é composto, basicamente, por um reator de apagamento, seguido por vários reatores de caustificação. No reator de apagamento, ocorre a formação de hidróxido de cálcio, segundo a reação: CaO(s) + H2O(1) → Ca(OH) 2 (s), e, simultaneamente, a reação de caustificação com a formação de hidróxido de sódio: Na2CO3 (aq) + Ca(OH) 2 (s) → 2 NaOH(aq) + CaCO3 (s), estendendo-se ao longo de vários reatores de mistura, dispostos em série. Neste sentido, como primeira etapa, foi elaborado e testado um modelo matemático fenomenológico do reator de apagamento em regime transiente, da indústria Klabin Paraná Papéis. O modelo foi obtido a partir de balanços de massa e de energia no reator, resultando num sistema de oito equações diferenciais ordinárias, que foram resolvidas numericamente. As simulações deste modelo, nas condições operacionais da planta, revelam que este é capaz de representar as principais tendências do processo.Universidade Estadual De Maringá2008-05-13info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/305110.4025/actascitechnol.v22i0.3051Acta Scientiarum. Technology; Vol 22 (2000); 1219-1224Acta Scientiarum. Technology; v. 22 (2000); 1219-12241806-25631807-8664reponame:Acta scientiarum. Technology (Online)instname:Universidade Estadual de Maringá (UEM)instacron:UEMporhttp://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/3051/2211Andreola, RicardoVieira, OsvaldoSantos, Onélia Aparecida Andreo dosJorge, Luiz Mario de Matosinfo:eu-repo/semantics/openAccess2024-05-17T13:02:53Zoai:periodicos.uem.br/ojs:article/3051Revistahttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/indexPUBhttps://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/oai||actatech@uem.br1807-86641806-2563opendoar:2024-05-17T13:02:53Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)false
dc.title.none.fl_str_mv Modeling and simulation of an industrial slaker reactor
Modelagem e simulação de um reator industrial de apagamento
title Modeling and simulation of an industrial slaker reactor
spellingShingle Modeling and simulation of an industrial slaker reactor
Andreola, Ricardo
caustificação
apagamento
modelagem
3.06.00.00-6 Engenharia Química
title_short Modeling and simulation of an industrial slaker reactor
title_full Modeling and simulation of an industrial slaker reactor
title_fullStr Modeling and simulation of an industrial slaker reactor
title_full_unstemmed Modeling and simulation of an industrial slaker reactor
title_sort Modeling and simulation of an industrial slaker reactor
author Andreola, Ricardo
author_facet Andreola, Ricardo
Vieira, Osvaldo
Santos, Onélia Aparecida Andreo dos
Jorge, Luiz Mario de Matos
author_role author
author2 Vieira, Osvaldo
Santos, Onélia Aparecida Andreo dos
Jorge, Luiz Mario de Matos
author2_role author
author
author
dc.contributor.author.fl_str_mv Andreola, Ricardo
Vieira, Osvaldo
Santos, Onélia Aparecida Andreo dos
Jorge, Luiz Mario de Matos
dc.subject.por.fl_str_mv caustificação
apagamento
modelagem
3.06.00.00-6 Engenharia Química
topic caustificação
apagamento
modelagem
3.06.00.00-6 Engenharia Química
description White liquor used in cellulose digesters is produced by the causticizing process that employs a reactor system composed of two main parts: a mixing slaker reactor followed by causticizing reactors. At the slaker reactor, calcium hydroxide is produced, according to the reaction: CaO(s) + H2O(1) → Ca(OH) 2 (s). Simultaneously a causticizing reaction occurs with the formation of sodium hydroxide: Na2CO3 (aq) + Ca(OH) 2 (s) → 2 NaOH(aq) + CaCO3 (s). The latter takes place along several mixing reactors connected in series. An initial step towards building this dynamic mathematic model was taken and tested for the Klabin Paraná Papéis mill slaker reactor, established in Brazil, for modeling purposes. Simulations of the dynamic model at process conditions show that it was able to reproduce the main characteristics of the process. Close agreement with plant measurements was obtained by adjusting one kinetic parameter.
publishDate 2008
dc.date.none.fl_str_mv 2008-05-13
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/3051
10.4025/actascitechnol.v22i0.3051
url http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/3051
identifier_str_mv 10.4025/actascitechnol.v22i0.3051
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv http://www.periodicos.uem.br/ojs/index.php/ActaSciTechnol/article/view/3051/2211
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Universidade Estadual De Maringá
publisher.none.fl_str_mv Universidade Estadual De Maringá
dc.source.none.fl_str_mv Acta Scientiarum. Technology; Vol 22 (2000); 1219-1224
Acta Scientiarum. Technology; v. 22 (2000); 1219-1224
1806-2563
1807-8664
reponame:Acta scientiarum. Technology (Online)
instname:Universidade Estadual de Maringá (UEM)
instacron:UEM
instname_str Universidade Estadual de Maringá (UEM)
instacron_str UEM
institution UEM
reponame_str Acta scientiarum. Technology (Online)
collection Acta scientiarum. Technology (Online)
repository.name.fl_str_mv Acta scientiarum. Technology (Online) - Universidade Estadual de Maringá (UEM)
repository.mail.fl_str_mv ||actatech@uem.br
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