Made available in DSpace on 2014-12-17T15:01:24Z (GMT). No. of bitstreams: 1
MarcioBDB_DISSERT.pdf: 1427541 bytes, checksum: 4ea4ab1aa3dd7faa960c62967facffc8 (MD5)
Previous issue date: 2010-09-30 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / This work aims at the implementation and adaptation of a computational model for the
study of the Fischer-Tropsch reaction in a slurry bed reactor from synthesis gas
(CO+H2) for the selective production of hydrocarbons (CnHm), with emphasis on
evaluation of the influence of operating conditions on the distribution of products
formed during the reaction.The present model takes into account effects of rigorous
phase equilibrium in a reactive flash drum, a detailed kinetic model able of predicting
the formation of each chemical species of the reaction system, as well as control loops
of the process variables for pressure and level of slurry phase. As a result, a system of
Differential Algebraic Equations was solved using the computational code DASSL
(Petzold, 1982). The consistent initialization for the problem was based on phase
equilibrium formed by the existing components in the reactor. In addition, the index of
the system was reduced to 1 by the introduction of control laws that govern the output
of the reactor products. The results were compared qualitatively with experimental data
collected in the Fischer-Tropsch Synthesis plant installed at Laborat?rio de
Processamento de G?s - CTG?S-ER-Natal/RN / O presente trabalho tem como objetivo a implementa??o e adapta??o de um
modelo computacional de equil?brio de fases visando o estudo do processo Fischer-
Tropsch em reator leito de lama a partir de g?s de s?ntese (CO + H2) para a produ??o
seletiva de hidrocarbonetos (CnHm), com ?nfase na avalia??o da influ?ncia das
condi??es operacionais sobre a distribui??o dos produtos formados durante a rea??o. O
modelo em quest?o leva em conta efeitos do equil?brio de fases de modo rigoroso num
tambor flash reativo, uma cin?tica detalhada que prev? a forma??o de cada componente
do sistema reacional, bem como malhas de controle do processo para as vari?veis
press?o e n?vel da fase lama. O sistema de equa??es obtido ? do tipo Alg?brico
Diferencial, e foi resolvido utilizando-se o c?digo computacional DASSL (Petzold,
1982). A inicializa??o consistente do sistema de equa??es foi feita com base na
condi??o de equil?brio de fases inicial formado pelos componentes j? existentes no
reator, sendo o ?ndice do sistema reduzido a 1 pela introdu??o das leis de controle que
regem a sa?da de produtos do reator. Os resultados obtidos foram comparados
qualitativamente com os dados experimentais coletados na planta de s?ntese de Fischer-
Tropsch instalada no Laborat?rio de Processamento de G?s do CTG?S-ER em
Natal/RN
| Identifer | oai:union.ndltd.org:IBICT/oai:repositorio.ufrn.br:123456789/15798 |
| Date | 30 September 2010 |
| Creators | Bezerra, Marcio Barbalho Dantas |
| Contributors | CPF:65331060587, http://lattes.cnpq.br/5058617634570704, Lucena, S?rgio, CPF:36018724472, http://lattes.cnpq.br/0088457363574989, Ruiz, Juan Alberto Chavez, CPF:00744293456, http://lattes.cnpq.br/5051286289341242, Sousa, Jo?o Fernandes de, Oliveira, Jackson Ara?jo de |
| Publisher | Universidade Federal do Rio Grande do Norte, Programa de P?s-Gradua??o em Engenharia Qu?mica, UFRN, BR, Pesquisa e Desenvolvimento de Tecnologias Regionais |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/masterThesis |
| Format | application/pdf |
| Source | reponame:Repositório Institucional da UFRN, instname:Universidade Federal do Rio Grande do Norte, instacron:UFRN |
| Rights | info:eu-repo/semantics/openAccess |
Page generated in 0.0026 seconds