Modeling and simulation of pyrolysis of sisal residue in transient regime

Detalhes bibliográficos
Autor(a) principal: Pereira, Tarcísio de Oliveira
Data de Publicação: 2020
Outros Autores: Pires, Carlos Augusto de Moraes, Passos Santos, Daniel Bemmuyal
Tipo de documento: Artigo
Idioma: por
Título da fonte: Research, Society and Development
Texto Completo: https://rsdjournal.org/index.php/rsd/article/view/2647
Resumo: This study presents a transient mathematical model capable of predicting coal production in a fast pyrolysis process from a fluidized bed reactor. The model was developed from the thermal decomposition of a sisal particle and its solution depended on data not reported in the literature. The convective coefficient of the reaction medium was found from pilot unit experimental data involving heats given and dissipated by the reaction system. The surface temperature of the particle was measured in a new bench test, in which some particles were pyrolysis transformed at a fixed reaction temperature. The surface temperature of a set of particles was measured at each reaction time, as well as their diameters and masses. The particle specific mass was measured with the aid of gas pycnometry, using the particles obtained in the surface temperature experiment. From the results of the particle specific diameters and mass, it was possible to determine their calorific capacities. The system of equations obtained was solved in MATLAB environment, obtaining surface temperature and particle mass profiles throughout the reaction. The data needed to calculate the theoretical carbon mass of a pyrolysis pilot unit was the particle diameter obtained from the model simulation and the resulting particle velocities in the reactor obtained from a force balance in a particle. The calculated particle residence time was 35 s and the calculated coal mass had a discrepancy of 6.38% compared to data collected at the pilot production unit. These results validate the properties, throughout the reaction, of the particle of the sisal residue found experimentally and by means of calculations.
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spelling Modeling and simulation of pyrolysis of sisal residue in transient regimeModelado y simulación de pirólisis de residuos de sisal en régimen transitorioModelagem e simulação da pirólise do resíduo de sisal em regime transientePartículaModeladoPropiedades térmicas.PartículaModelagemPropriedades térmicas.ParticleModelingThermal properties.This study presents a transient mathematical model capable of predicting coal production in a fast pyrolysis process from a fluidized bed reactor. The model was developed from the thermal decomposition of a sisal particle and its solution depended on data not reported in the literature. The convective coefficient of the reaction medium was found from pilot unit experimental data involving heats given and dissipated by the reaction system. The surface temperature of the particle was measured in a new bench test, in which some particles were pyrolysis transformed at a fixed reaction temperature. The surface temperature of a set of particles was measured at each reaction time, as well as their diameters and masses. The particle specific mass was measured with the aid of gas pycnometry, using the particles obtained in the surface temperature experiment. From the results of the particle specific diameters and mass, it was possible to determine their calorific capacities. The system of equations obtained was solved in MATLAB environment, obtaining surface temperature and particle mass profiles throughout the reaction. The data needed to calculate the theoretical carbon mass of a pyrolysis pilot unit was the particle diameter obtained from the model simulation and the resulting particle velocities in the reactor obtained from a force balance in a particle. The calculated particle residence time was 35 s and the calculated coal mass had a discrepancy of 6.38% compared to data collected at the pilot production unit. These results validate the properties, throughout the reaction, of the particle of the sisal residue found experimentally and by means of calculations.Este estudio presenta un modelo matemático transitorio capaz de predecir la producción de carbón en un proceso de pirólisis rápida a partir de un reactor de lecho fluidizado. El modelo fue desarrollado a partir de la descomposición térmica de una partícula de sisal y su solución dependía de datos no reportados en la literatura. El coeficiente convectivo del medio de reacción se encontró a partir de datos experimentales de la unidad piloto que implican calores dados y disipados por el sistema de reacción. La temperatura de la superficie de la partícula se midió en una nueva prueba de banco, en la que algunas partículas se transformaron por pirólisis a una temperatura de reacción fija. La temperatura de la superficie de un conjunto de partículas se midió en cada tiempo de reacción, así como sus diámetros y masas. La masa específica de partículas se midió con la ayuda de picnometría de gases, utilizando las partículas obtenidas en el experimento de temperatura de la superficie. A partir de los resultados de los diámetros y la masa específicos de las partículas, fue posible determinar sus capacidades caloríficas. El sistema de ecuaciones obtenido se resolvió en el entorno MATLAB, obteniendo perfiles de temperatura de superficie y masa de partículas durante toda la reacción. Los datos necesarios para calcular la masa de carbono teórica de una unidad piloto de pirólisis fue el diámetro de partícula obtenido de la simulación del modelo y las velocidades de partícula resultantes en el reactor obtenidas de un equilibrio de fuerza a partícula. El tiempo de residencia de partículas calculado fue de 35 s, y la masa de carbón calculada tuvo una discrepancia de 6.38% de los datos recopilados en la unidad de producción piloto. Estos resultados validan las propiedades, a lo largo de la reacción, de la partícula del residuo de sisal encontrada experimentalmente y mediante cálculos.Esse estudo apresenta um modelo matemático em regime transiente capaz de prever a produção de carvão em um processo de pirólise rápida, a partir um reator de leito fluidizado. O modelo foi desenvolvido a partir da decomposição térmica de uma partícula de sisal e sua solução dependeu de dados não relatados na literatura. O coeficiente convectivo do meio reacional foi encontrado a partir de dados experimentais da unidade piloto, envolvendo calores cedidos e dissipados pelo sistema reacional. A temperatura superficial da partícula foi medida em um novo teste de bancada, no qual algumas partículas foram transformadas por pirólise a uma temperatura de reação fixa. A temperatura superficial de um conjunto de partículas foi medida a cada tempo de reação, assim como seus diâmetros e massas. A massa específica da partícula foi medida com o auxílio da picnometria a gás, utilizando as partículas obtidas no experimento de medida da temperatura superficial. A partir dos resultados dos diâmetros e massa específicas das partículas, foi possível determinar as suas capacidades caloríficas. O sistema de equações obtido foi resolvido em ambiente MATLAB, obtendo-se perfis de temperatura de superfície e massa da partícula ao longo da reação. Os dados necessários para se calcular a massa de carvão teórica de uma unidade piloto de pirólise foram o diâmetro das partículas, obtidos a partir da simulação do modelo, e as velocidades resultantes da partícula no reator, obtidas a partir de um balanço de forças em uma partícula. O tempo de residência da partícula calculado foi de 35 s, e a massa de carvão calculada teve uma discrepância de 6,38% em relação a dados coletados na unidade piloto de produção. Estes resultados validam as propriedades, ao longo da reação, da partícula do resíduo de sisal encontradas experimentalmente e por meio de cálculos.Research, Society and Development2020-02-27info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://rsdjournal.org/index.php/rsd/article/view/264710.33448/rsd-v9i3.2647Research, Society and Development; Vol. 9 No. 3; e121932647Research, Society and Development; Vol. 9 Núm. 3; e121932647Research, Society and Development; v. 9 n. 3; e1219326472525-3409reponame:Research, Society and Developmentinstname:Universidade Federal de Itajubá (UNIFEI)instacron:UNIFEIporhttps://rsdjournal.org/index.php/rsd/article/view/2647/1990Copyright (c) 2019 TARCISIO OLIVEIRA PEREIRAinfo:eu-repo/semantics/openAccessPereira, Tarcísio de OliveiraPires, Carlos Augusto de MoraesPassos Santos, Daniel Bemmuyal2020-08-20T18:07:57Zoai:ojs.pkp.sfu.ca:article/2647Revistahttps://rsdjournal.org/index.php/rsd/indexPUBhttps://rsdjournal.org/index.php/rsd/oairsd.articles@gmail.com2525-34092525-3409opendoar:2024-01-17T09:27:09.538848Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)false
dc.title.none.fl_str_mv Modeling and simulation of pyrolysis of sisal residue in transient regime
Modelado y simulación de pirólisis de residuos de sisal en régimen transitorio
Modelagem e simulação da pirólise do resíduo de sisal em regime transiente
title Modeling and simulation of pyrolysis of sisal residue in transient regime
spellingShingle Modeling and simulation of pyrolysis of sisal residue in transient regime
Pereira, Tarcísio de Oliveira
Partícula
Modelado
Propiedades térmicas.
Partícula
Modelagem
Propriedades térmicas.
Particle
Modeling
Thermal properties.
title_short Modeling and simulation of pyrolysis of sisal residue in transient regime
title_full Modeling and simulation of pyrolysis of sisal residue in transient regime
title_fullStr Modeling and simulation of pyrolysis of sisal residue in transient regime
title_full_unstemmed Modeling and simulation of pyrolysis of sisal residue in transient regime
title_sort Modeling and simulation of pyrolysis of sisal residue in transient regime
author Pereira, Tarcísio de Oliveira
author_facet Pereira, Tarcísio de Oliveira
Pires, Carlos Augusto de Moraes
Passos Santos, Daniel Bemmuyal
author_role author
author2 Pires, Carlos Augusto de Moraes
Passos Santos, Daniel Bemmuyal
author2_role author
author
dc.contributor.author.fl_str_mv Pereira, Tarcísio de Oliveira
Pires, Carlos Augusto de Moraes
Passos Santos, Daniel Bemmuyal
dc.subject.por.fl_str_mv Partícula
Modelado
Propiedades térmicas.
Partícula
Modelagem
Propriedades térmicas.
Particle
Modeling
Thermal properties.
topic Partícula
Modelado
Propiedades térmicas.
Partícula
Modelagem
Propriedades térmicas.
Particle
Modeling
Thermal properties.
description This study presents a transient mathematical model capable of predicting coal production in a fast pyrolysis process from a fluidized bed reactor. The model was developed from the thermal decomposition of a sisal particle and its solution depended on data not reported in the literature. The convective coefficient of the reaction medium was found from pilot unit experimental data involving heats given and dissipated by the reaction system. The surface temperature of the particle was measured in a new bench test, in which some particles were pyrolysis transformed at a fixed reaction temperature. The surface temperature of a set of particles was measured at each reaction time, as well as their diameters and masses. The particle specific mass was measured with the aid of gas pycnometry, using the particles obtained in the surface temperature experiment. From the results of the particle specific diameters and mass, it was possible to determine their calorific capacities. The system of equations obtained was solved in MATLAB environment, obtaining surface temperature and particle mass profiles throughout the reaction. The data needed to calculate the theoretical carbon mass of a pyrolysis pilot unit was the particle diameter obtained from the model simulation and the resulting particle velocities in the reactor obtained from a force balance in a particle. The calculated particle residence time was 35 s and the calculated coal mass had a discrepancy of 6.38% compared to data collected at the pilot production unit. These results validate the properties, throughout the reaction, of the particle of the sisal residue found experimentally and by means of calculations.
publishDate 2020
dc.date.none.fl_str_mv 2020-02-27
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://rsdjournal.org/index.php/rsd/article/view/2647
10.33448/rsd-v9i3.2647
url https://rsdjournal.org/index.php/rsd/article/view/2647
identifier_str_mv 10.33448/rsd-v9i3.2647
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv https://rsdjournal.org/index.php/rsd/article/view/2647/1990
dc.rights.driver.fl_str_mv Copyright (c) 2019 TARCISIO OLIVEIRA PEREIRA
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Copyright (c) 2019 TARCISIO OLIVEIRA PEREIRA
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Research, Society and Development
publisher.none.fl_str_mv Research, Society and Development
dc.source.none.fl_str_mv Research, Society and Development; Vol. 9 No. 3; e121932647
Research, Society and Development; Vol. 9 Núm. 3; e121932647
Research, Society and Development; v. 9 n. 3; e121932647
2525-3409
reponame:Research, Society and Development
instname:Universidade Federal de Itajubá (UNIFEI)
instacron:UNIFEI
instname_str Universidade Federal de Itajubá (UNIFEI)
instacron_str UNIFEI
institution UNIFEI
reponame_str Research, Society and Development
collection Research, Society and Development
repository.name.fl_str_mv Research, Society and Development - Universidade Federal de Itajubá (UNIFEI)
repository.mail.fl_str_mv rsd.articles@gmail.com
_version_ 1797052777010036736

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