STUDY OF ISOBUTANE-HEXENE SEPARATION: A REAL PETROCHEMICAL INDUSTRY CASE
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | The Journal of Engineering and Exact Sciences |
Texto Completo: | https://periodicos.ufv.br/jcec/article/view/2497 |
Resumo: | This work aimed the study and optimization the recovery method of isobutane and hexene in a distillation column. This column is part of the process to obtain high density polyethylene in a petrochemical industry. To carry out the simulation of the process, the software ASPEN PLUS, ASPEN DYNAMICS and the process data were used, which enabled a simulation with the expected conditions to analyze the causes of the presented problems and propose improvements in its operation. For study the behavior of the column in steady state, it was necessary to define the thermodynamic model by analyzing the composition of the feed currents and the operating pressure data. Based on the new operating point and the steam restriction of the referent, a new reboiler was designed with the purpose of increasing the area of thermal exchange, supplying the energy deficit of the process. Another option, aiming the cost minimization, was the design of an identical reboiler to the existing to operate in parallel with it. Finally, the existing control is evaluated, and it is proposed a background level control of the column through the bottom flow, control of the bottom temperature of the column manipulating the thermal load of the reboiler and control of lateral withdrawal, changing the set point from stage 24 to stage 31, resulting in a better response to the disturbance in the feed stream and ensuring a high hexene composition in lateral withdrawal |
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The Journal of Engineering and Exact Sciences |
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STUDY OF ISOBUTANE-HEXENE SEPARATION: A REAL PETROCHEMICAL INDUSTRY CASEESTUDO DA SEPARAÇÃO ISOBUTANO HEXENO: UM CASO REAL DE INDÚSTRIA PETROQUÍMICADistillationASPEN PLUSHexeneIsobutaneReboilerDestilaçãoASPEN PLUSHexenoIsobutanoRefervedorThis work aimed the study and optimization the recovery method of isobutane and hexene in a distillation column. This column is part of the process to obtain high density polyethylene in a petrochemical industry. To carry out the simulation of the process, the software ASPEN PLUS, ASPEN DYNAMICS and the process data were used, which enabled a simulation with the expected conditions to analyze the causes of the presented problems and propose improvements in its operation. For study the behavior of the column in steady state, it was necessary to define the thermodynamic model by analyzing the composition of the feed currents and the operating pressure data. Based on the new operating point and the steam restriction of the referent, a new reboiler was designed with the purpose of increasing the area of thermal exchange, supplying the energy deficit of the process. Another option, aiming the cost minimization, was the design of an identical reboiler to the existing to operate in parallel with it. Finally, the existing control is evaluated, and it is proposed a background level control of the column through the bottom flow, control of the bottom temperature of the column manipulating the thermal load of the reboiler and control of lateral withdrawal, changing the set point from stage 24 to stage 31, resulting in a better response to the disturbance in the feed stream and ensuring a high hexene composition in lateral withdrawalEste trabalho visou o estudo e otimização do método de recuperação de isobutano e hexeno em uma coluna de destilação. Essa coluna faz parte do processo de obtenção de polietileno de alta densidade em uma indústria petroquímica. Para realizar a simulação do processo foram utilizados os softwares ASPEN PLUS, ASPEN DYNAMICS e também os dados do processo, o que possibilitou uma simulação com as condições esperadas para assim analisar as causas dos problemas apresentados e propor melhorias no seu funcionamento. Para o estudo do comportamento da coluna em regime estacionário foi necessário definir o modelo termodinâmico mediante análises de composição das correntes de alimentação e dados da pressão de operação. Com base no novo ponto de operação e na restrição do vapor do refervedor, projetou-se um novo refervedor, com o intuito de aumentar a área de troca térmica, suprindo a deficiência energética do processo. Outra opção, visando a minimização de custo, foi o projeto de um refervedor idêntico ao existente para operar em paralelo com o mesmo. Por fim avalia-se o controle existente e propõe-se um controle de nível de fundo da coluna através da vazão de fundo, controle de temperatura de fundo da coluna manipulando a carga térmica do refervedor e controle da retirada lateral, alterando-se o set point do estágio 24 para o estágio 31, obtendo-se uma resposta mais rápida frente a distúrbio na corrente de alimentação e garantindo uma composição de hexeno elevada na retirada lateral.This work aimed the study and optimization the recovery method of isobutane and hexene in a distillation column. This column is part of the process to obtain high density polyethylene in a petrochemical industry. To carry out the simulation of the process, the software ASPEN PLUSÒ, ASPEN DYNAMICSÒ and the process data were used, which enabled a simulation with the expected conditions to analyze the causes of the presented problems and propose improvements in its operation. For study the behavior of the column in steady state, it was necessary to define the thermodynamic model by analyzing the composition of the feed currents and the operating pressure data. Based on the new operating point and the steam restriction of the referent, a new reboiler was designed with the purpose of increasing the area of thermal exchange, supplying the energy deficit of the process. Another option, aiming the cost minimization, was the design of an identical reboiler to the existing to operate in parallel with it. Finally, the existing control is evaluated, and it is proposed a background level control of the column through the bottom flow, control of the bottom temperature of the column manipulating the thermal load of the reboiler and control of lateral withdrawal, changing the set point from stage 24 to stage 31, resulting in a better response to the disturbance in the feed stream and ensuring a high hexene composition in lateral withdrawal. Universidade Federal de Viçosa - UFV2018-03-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://periodicos.ufv.br/jcec/article/view/249710.18540/jcecvl4iss1pp0109-0116The Journal of Engineering and Exact Sciences; Vol. 4 No. 1 (2018); 0109-0116The Journal of Engineering and Exact Sciences; Vol. 4 Núm. 1 (2018); 0109-0116The Journal of Engineering and Exact Sciences; v. 4 n. 1 (2018); 0109-01162527-1075reponame:The Journal of Engineering and Exact Sciencesinstname:Universidade Federal de Viçosa (UFV)instacron:UFVporhttps://periodicos.ufv.br/jcec/article/view/2497/1048Ferreira, Newton LibanioChic, Ingrid Ramos AlegreAguiar, Juliana MazarinOta, Rodrigo SeijiCosta, Thais Ribeiroinfo:eu-repo/semantics/openAccess2018-12-05T12:57:24Zoai:ojs.periodicos.ufv.br:article/2497Revistahttp://www.seer.ufv.br/seer/rbeq2/index.php/req2/oai2527-10752527-1075opendoar:2018-12-05T12:57:24The Journal of Engineering and Exact Sciences - Universidade Federal de Viçosa (UFV)false |
dc.title.none.fl_str_mv |
STUDY OF ISOBUTANE-HEXENE SEPARATION: A REAL PETROCHEMICAL INDUSTRY CASE ESTUDO DA SEPARAÇÃO ISOBUTANO HEXENO: UM CASO REAL DE INDÚSTRIA PETROQUÍMICA |
title |
STUDY OF ISOBUTANE-HEXENE SEPARATION: A REAL PETROCHEMICAL INDUSTRY CASE |
spellingShingle |
STUDY OF ISOBUTANE-HEXENE SEPARATION: A REAL PETROCHEMICAL INDUSTRY CASE Ferreira, Newton Libanio Distillation ASPEN PLUS Hexene Isobutane Reboiler Destilação ASPEN PLUS Hexeno Isobutano Refervedor |
title_short |
STUDY OF ISOBUTANE-HEXENE SEPARATION: A REAL PETROCHEMICAL INDUSTRY CASE |
title_full |
STUDY OF ISOBUTANE-HEXENE SEPARATION: A REAL PETROCHEMICAL INDUSTRY CASE |
title_fullStr |
STUDY OF ISOBUTANE-HEXENE SEPARATION: A REAL PETROCHEMICAL INDUSTRY CASE |
title_full_unstemmed |
STUDY OF ISOBUTANE-HEXENE SEPARATION: A REAL PETROCHEMICAL INDUSTRY CASE |
title_sort |
STUDY OF ISOBUTANE-HEXENE SEPARATION: A REAL PETROCHEMICAL INDUSTRY CASE |
author |
Ferreira, Newton Libanio |
author_facet |
Ferreira, Newton Libanio Chic, Ingrid Ramos Alegre Aguiar, Juliana Mazarin Ota, Rodrigo Seiji Costa, Thais Ribeiro |
author_role |
author |
author2 |
Chic, Ingrid Ramos Alegre Aguiar, Juliana Mazarin Ota, Rodrigo Seiji Costa, Thais Ribeiro |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Ferreira, Newton Libanio Chic, Ingrid Ramos Alegre Aguiar, Juliana Mazarin Ota, Rodrigo Seiji Costa, Thais Ribeiro |
dc.subject.por.fl_str_mv |
Distillation ASPEN PLUS Hexene Isobutane Reboiler Destilação ASPEN PLUS Hexeno Isobutano Refervedor |
topic |
Distillation ASPEN PLUS Hexene Isobutane Reboiler Destilação ASPEN PLUS Hexeno Isobutano Refervedor |
description |
This work aimed the study and optimization the recovery method of isobutane and hexene in a distillation column. This column is part of the process to obtain high density polyethylene in a petrochemical industry. To carry out the simulation of the process, the software ASPEN PLUS, ASPEN DYNAMICS and the process data were used, which enabled a simulation with the expected conditions to analyze the causes of the presented problems and propose improvements in its operation. For study the behavior of the column in steady state, it was necessary to define the thermodynamic model by analyzing the composition of the feed currents and the operating pressure data. Based on the new operating point and the steam restriction of the referent, a new reboiler was designed with the purpose of increasing the area of thermal exchange, supplying the energy deficit of the process. Another option, aiming the cost minimization, was the design of an identical reboiler to the existing to operate in parallel with it. Finally, the existing control is evaluated, and it is proposed a background level control of the column through the bottom flow, control of the bottom temperature of the column manipulating the thermal load of the reboiler and control of lateral withdrawal, changing the set point from stage 24 to stage 31, resulting in a better response to the disturbance in the feed stream and ensuring a high hexene composition in lateral withdrawal |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-03-02 |
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 |
https://periodicos.ufv.br/jcec/article/view/2497 10.18540/jcecvl4iss1pp0109-0116 |
url |
https://periodicos.ufv.br/jcec/article/view/2497 |
identifier_str_mv |
10.18540/jcecvl4iss1pp0109-0116 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufv.br/jcec/article/view/2497/1048 |
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 Federal de Viçosa - UFV |
publisher.none.fl_str_mv |
Universidade Federal de Viçosa - UFV |
dc.source.none.fl_str_mv |
The Journal of Engineering and Exact Sciences; Vol. 4 No. 1 (2018); 0109-0116 The Journal of Engineering and Exact Sciences; Vol. 4 Núm. 1 (2018); 0109-0116 The Journal of Engineering and Exact Sciences; v. 4 n. 1 (2018); 0109-0116 2527-1075 reponame:The Journal of Engineering and Exact Sciences instname:Universidade Federal de Viçosa (UFV) instacron:UFV |
instname_str |
Universidade Federal de Viçosa (UFV) |
instacron_str |
UFV |
institution |
UFV |
reponame_str |
The Journal of Engineering and Exact Sciences |
collection |
The Journal of Engineering and Exact Sciences |
repository.name.fl_str_mv |
The Journal of Engineering and Exact Sciences - Universidade Federal de Viçosa (UFV) |
repository.mail.fl_str_mv |
|
_version_ |
1798313319369539584 |