Three-dimensional reaction-convection-diffusion analysis with temperature influence for biodiesel synthesis in micro-reactors
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFRJ |
Texto Completo: | http://hdl.handle.net/11422/8326 |
Resumo: | Indisponível. |
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Pontes, Péricles CrisironNaveira-Cotta, Carolina PalmaQuaresma, João Nazareno Nonato2019-06-06T15:56:17Z2023-11-30T03:03:29Z2017-04-281290-0729http://hdl.handle.net/11422/832610.1016/j.ijthermalsci.2017.03.022Indisponível.A three-dimensional nonlinear reaction-convection-diffusion model is proposed to analyze mass transfer with temperature effects, within micro-reactors of rectangular cross-section, towards the simulation of the transesterification process in biodiesel synthesis. The coupled nonlinear partial differential equations that govern the concentration of the species involved in the synthesis, is obtained from the general three-dimensional species balance equations for an isothermal and steady state system with constant physical properties. A kinetic model is considered to describe the variation of the species due to the transesterification process, assuming second order homogeneous and reversible chemical reactions. The velocity profile is analytically derived from the Navier-Stokes equations, considering fully developed stratified laminar flow of two immiscible Newtonian fluids in a rectangular cross section micro-reactor, with a plane interface between them and without field forces, and obtained by the Classical Integral Transform Technique (CITT). The nonlinear mass transport equations are then solved by the hybrid numerical-analytical approach known as the Generalized Integral Transform Technique (GITT). In the present GITT solution, two alternative eigenvalue problems are proposed, accounting or not accounting for the space variable velocity profile influence in the eigenfunction expansion basis, in order to investigate the differences in the convergence behavior of the solutions obtained through the two different auxiliary problems. The results for the concentration profiles of the biodiesel and triglyceride species are critically compared with literature data for the limiting case of parallel plates, showing a good agreement among them. The analysis also indicates that improved convergence rates are achievable through the eigenvalue problem with variable coefficients. The effects of governing parameters such as residence time, micro-reactor dimensions, and especially temperature, are investigated. It is then inspected the relative gains in triglycerides conversion rates at higher temperatures and residence times and lower micro-reactor hydraulic diameter.Submitted by Jairo Amaro (jairo.amaro@sibi.ufrj.br) on 2019-06-06T15:56:17Z No. of bitstreams: 1 2-2017_Three-dimensional-reaction-convection-diffusion-min.pdf: 1428842 bytes, checksum: 440fb7fc9fb7121e40c6376c3c6cf35a (MD5)Made available in DSpace on 2019-06-06T15:56:17Z (GMT). No. of bitstreams: 1 2-2017_Three-dimensional-reaction-convection-diffusion-min.pdf: 1428842 bytes, checksum: 440fb7fc9fb7121e40c6376c3c6cf35a (MD5) Previous issue date: 2017-04-28engElsevierBrasilNúcleo Interdisciplinar de Dinâmica dos FluidosInternational Journal of Thermal SciencesCNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOSBiodieselMicro-reactorTransesterificationIntegral transformsReaction-convection-diffusion equationsHybrid methodsThree-dimensional reaction-convection-diffusion analysis with temperature influence for biodiesel synthesis in micro-reactorsinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article118104122365 diasinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRJinstname:Universidade Federal do Rio de Janeiro (UFRJ)instacron:UFRJORIGINAL2-2017_Three-dimensional-reaction-convection-diffusion-min.pdf2-2017_Three-dimensional-reaction-convection-diffusion-min.pdfArtigoapplication/pdf1428842http://pantheon.ufrj.br:80/bitstream/11422/8326/1/2-2017_Three-dimensional-reaction-convection-diffusion-min.pdf440fb7fc9fb7121e40c6376c3c6cf35aMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81853http://pantheon.ufrj.br:80/bitstream/11422/8326/2/license.txtdd32849f2bfb22da963c3aac6e26e255MD5211422/83262023-11-30 00:03:29.344oai:pantheon.ufrj.br:11422/8326TElDRU7Dh0EgTsODTy1FWENMVVNJVkEgREUgRElTVFJJQlVJw4fDg08KCkFvIGFzc2luYXIgZSBlbnRyZWdhciBlc3RhIGxpY2Vuw6dhLCB2b2PDqihzKSBvKHMpIGF1dG9yKGVzKSBvdSBwcm9wcmlldMOhcmlvKHMpIGRvcyBkaXJlaXRvcyBhdXRvcmFpcyBjb25jZWRlKG0pIGFvIFJlcG9zaXTDs3JpbyBQYW50aGVvbiBkYSBVbml2ZXJzaWRhZGUgRmVkZXJhbCBkbyBSaW8gZGUgSmFuZWlybyAoVUZSSikgbyBkaXJlaXRvIG7Do28gLSBleGNsdXNpdm8gZGUgcmVwcm9kdXppciwgY29udmVydGVyIChjb21vIGRlZmluaWRvIGFiYWl4byksIGUvb3UgZGlzdHJpYnVpciBvIGRvY3VtZW50byBlbnRyZWd1ZSAoaW5jbHVpbmRvIG8gcmVzdW1vKSBlbSB0b2RvIG8gbXVuZG8sIGVtIGZvcm1hdG8gZWxldHLDtG5pY28gZSBlbSBxdWFscXVlciBtZWlvLCBpbmNsdWluZG8sIG1hcyBuw6NvIGxpbWl0YWRvIGEgw6F1ZGlvIGUvb3UgdsOtZGVvLgoKVm9jw6ogY29uY29yZGEgcXVlIGEgVUZSSiBwb2RlLCBzZW0gYWx0ZXJhciBvIGNvbnRlw7pkbywgdHJhZHV6aXIgYSBhcHJlc2VudGHDp8OjbyBkZSBxdWFscXVlciBtZWlvIG91IGZvcm1hdG8gY29tIGEgZmluYWxpZGFkZSBkZSBwcmVzZXJ2YcOnw6NvLgoKVm9jw6ogdGFtYsOpbSBjb25jb3JkYSBxdWUgYSBVRlJKIHBvZGUgbWFudGVyIG1haXMgZGUgdW1hIGPDs3BpYSBkZXNzYSBzdWJtaXNzw6NvIHBhcmEgZmlucyBkZSBzZWd1cmFuw6dhLCBiYWNrLXVwIGUgcHJlc2VydmHDp8OjbyBkaWdpdGFsLgoKRGVjbGFyYSBxdWUgbyBkb2N1bWVudG8gZW50cmVndWUgw6kgc2V1IHRyYWJhbGhvIG9yaWdpbmFsLCBlIHF1ZSB2b2PDqiB0ZW0gbyBkaXJlaXRvIGRlIGNvbmNlZGVyIG9zIGRpcmVpdG9zIGNvbnRpZG9zIG5lc3RhIGxpY2Vuw6dhLiBWb2PDqiB0YW1iw6ltIGRlY2xhcmEgcXVlIGEgc3VhIGFwcmVzZW50YcOnw6NvLCBjb20gbyBtZWxob3IgZGUgc2V1cyBjb25oZWNpbWVudG9zLCBuw6NvIGluZnJpbmdpIGRpcmVpdG9zIGF1dG9yYWlzIGRlIHRlcmNlaXJvcy4KClNlIG8gZG9jdW1lbnRvIGVudHJlZ3VlIGNvbnTDqW0gbWF0ZXJpYWwgZG8gcXVhbCB2b2PDqiBuw6NvIHRlbSBkaXJlaXRvcyBkZSBhdXRvciwgZGVjbGFyYSBxdWUgb2J0ZXZlIGEgcGVybWlzc8OjbyBpcnJlc3RyaXRhIGRvIGRldGVudG9yIGRvcyBkaXJlaXRvcyBhdXRvcmFpcyBlIGNvbmNlZGUgYSBVRlJKIG9zIGRpcmVpdG9zIHJlcXVlcmlkb3MgcG9yIGVzdGEgbGljZW7Dp2EsIGUgcXVlIGVzc2UgbWF0ZXJpYWwgZGUgcHJvcHJpZWRhZGUgZGUgdGVyY2Vpcm9zIGVzdMOhIGNsYXJhbWVudGUgaWRlbnRpZmljYWRvIGUgcmVjb25oZWNpZG8gbm8gdGV4dG8gb3UgY29udGXDumRvIGRhIHN1Ym1pc3PDo28uCgpTZSBvIGRvY3VtZW50byBlbnRyZWd1ZSDDqSBiYXNlYWRvIGVtIHRyYWJhbGhvIHF1ZSBmb2ksIG91IHRlbSBzaWRvIHBhdHJvY2luYWRvIG91IGFwb2lhZG8gcG9yIHVtYSBhZ8OqbmNpYSBvdSBvdXRybyhzKSBvcmdhbmlzbW8ocykgcXVlIG7Do28gYSBVRlJKLCB2b2PDqiBkZWNsYXJhIHF1ZSBjdW1wcml1IHF1YWxxdWVyIGRpcmVpdG8gZGUgUkVWSVPDg08gb3UgZGUgb3V0cmFzIG9icmlnYcOnw7VlcyByZXF1ZXJpZGFzIHBvciBjb250cmF0byBvdSBhY29yZG8uCgpBIFVGUkogaXLDoSBpZGVudGlmaWNhciBjbGFyYW1lbnRlIG8ocykgc2V1KHMpIG5vbWUocykgY29tbyBhdXRvcihlcykgb3UgcHJvcHJpZXTDoXJpbyhzKSBkYSBzdWJtaXNzw6NvLCBlIG7Do28gZmFyw6EgcXVhbHF1ZXIgYWx0ZXJhw6fDo28sIHBhcmEgYWzDqW0gZGFzIHBlcm1pdGlkYXMgcG9yIGVzdGEgbGljZW7Dp2EsIG5vIGF0byBkZSBzdWJtaXNzw6NvLgo=Repositório de PublicaçõesPUBhttp://www.pantheon.ufrj.br/oai/requestopendoar:2023-11-30T03:03:29Repositório Institucional da UFRJ - Universidade Federal do Rio de Janeiro (UFRJ)false |
dc.title.en.fl_str_mv |
Three-dimensional reaction-convection-diffusion analysis with temperature influence for biodiesel synthesis in micro-reactors |
title |
Three-dimensional reaction-convection-diffusion analysis with temperature influence for biodiesel synthesis in micro-reactors |
spellingShingle |
Three-dimensional reaction-convection-diffusion analysis with temperature influence for biodiesel synthesis in micro-reactors Pontes, Péricles Crisiron CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS Biodiesel Micro-reactor Transesterification Integral transforms Reaction-convection-diffusion equations Hybrid methods |
title_short |
Three-dimensional reaction-convection-diffusion analysis with temperature influence for biodiesel synthesis in micro-reactors |
title_full |
Three-dimensional reaction-convection-diffusion analysis with temperature influence for biodiesel synthesis in micro-reactors |
title_fullStr |
Three-dimensional reaction-convection-diffusion analysis with temperature influence for biodiesel synthesis in micro-reactors |
title_full_unstemmed |
Three-dimensional reaction-convection-diffusion analysis with temperature influence for biodiesel synthesis in micro-reactors |
title_sort |
Three-dimensional reaction-convection-diffusion analysis with temperature influence for biodiesel synthesis in micro-reactors |
author |
Pontes, Péricles Crisiron |
author_facet |
Pontes, Péricles Crisiron Naveira-Cotta, Carolina Palma Quaresma, João Nazareno Nonato |
author_role |
author |
author2 |
Naveira-Cotta, Carolina Palma Quaresma, João Nazareno Nonato |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Pontes, Péricles Crisiron Naveira-Cotta, Carolina Palma Quaresma, João Nazareno Nonato |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS |
topic |
CNPQ::CIENCIAS EXATAS E DA TERRA::FISICA::AREAS CLASSICAS DE FENOMENOLOGIA E SUAS APLICACOES::DINAMICA DOS FLUIDOS Biodiesel Micro-reactor Transesterification Integral transforms Reaction-convection-diffusion equations Hybrid methods |
dc.subject.por.fl_str_mv |
Biodiesel |
dc.subject.eng.fl_str_mv |
Micro-reactor Transesterification Integral transforms Reaction-convection-diffusion equations Hybrid methods |
description |
Indisponível. |
publishDate |
2017 |
dc.date.issued.fl_str_mv |
2017-04-28 |
dc.date.accessioned.fl_str_mv |
2019-06-06T15:56:17Z |
dc.date.available.fl_str_mv |
2023-11-30T03:03:29Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/11422/8326 |
dc.identifier.issn.pt_BR.fl_str_mv |
1290-0729 |
dc.identifier.doi.pt_BR.fl_str_mv |
10.1016/j.ijthermalsci.2017.03.022 |
identifier_str_mv |
1290-0729 10.1016/j.ijthermalsci.2017.03.022 |
url |
http://hdl.handle.net/11422/8326 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.en.fl_str_mv |
International Journal of Thermal Sciences |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
Elsevier |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Núcleo Interdisciplinar de Dinâmica dos Fluidos |
publisher.none.fl_str_mv |
Elsevier |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFRJ instname:Universidade Federal do Rio de Janeiro (UFRJ) instacron:UFRJ |
instname_str |
Universidade Federal do Rio de Janeiro (UFRJ) |
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UFRJ |
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UFRJ |
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Repositório Institucional da UFRJ |
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Repositório Institucional da UFRJ |
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1784097145451708416 |