1. Universidade Federal da Bahia
  2. Escola Politécnica
  3. Programa de Pós-Graduação em Engenharia Industrial (PEI)
  4. Dissertação (PEI)
Use este identificador para citar ou linkar para este item: https://repositorio.ufba.br/handle/ri/37029
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Campo DCValorIdioma
dc.creatorAlves Junior, Ozaná Rocha-
dc.date.accessioned2023-05-22T15:11:21Z-
dc.date.available2023-05-22T15:11:21Z-
dc.date.issued2023-05-05-
dc.identifier.urihttps://repositorio.ufba.br/handle/ri/37029-
dc.description.abstractThe opening of the market and the possibility of the participation of several suppliers in Natural Gas (NG) distribution networks has raised the level of complexity associated with the quality control of the final stream to be made available to the consumer market. There are suppliers that offer lower prices but supply a lower quality of fuel which can contribute to an out-of-spec final stream (after mixing the different suppliers). On the other hand, it is not always economically viable to build Processing Units and acquire analytical equipment for gas quality control. In general, simulations in natural gas distribution networks focus on the evaluation of physical criteria and energy balance. This work presents a dynamic optimization model, validated by real case studies, for the monitoring and quality control of a natural gas stream mixing process that involves several suppliers providing varying quality levels (including out of specification streams) and prices. The results show the feasibility of executing projects for new suppliers, as well as supplying natural gas to customers who use it as a raw material and who establish more restrictive specification limits than those established by the regulatory agency. Comparing with the conventional operating strategy, the results obtained by the proposed optimization model show a reduction in the cost of distribution equal to 13.5% and 22.6% in the two case studies analyzed, respectively.pt_BR
dc.description.sponsorshipCNPqpt_BR
dc.languageporpt_BR
dc.publisherUniversidade Federal da Bahiapt_BR
dc.rightsCC0 1.0 Universal*
dc.rights.urihttp://creativecommons.org/publicdomain/zero/1.0/*
dc.subjectGás naturalpt_BR
dc.subjectRedes de distribuiçãopt_BR
dc.subjectProcessos de misturapt_BR
dc.subjectOtimização dinâmicapt_BR
dc.subjectControle de qualidadept_BR
dc.subject.otherNatural gaspt_BR
dc.subject.otherDistribution networkspt_BR
dc.subject.otherMixing processespt_BR
dc.subject.otherDynamic optimizationpt_BR
dc.subject.otherQuality controlpt_BR
dc.titleModelagem e otimização de redes de distribuição de gás natural para projetos de novos supridorespt_BR
dc.title.alternativeModeling and optimization of natural gas distribution networks for new supplier projectspt_BR
dc.typeDissertaçãopt_BR
dc.publisher.programPrograma de Pós-Graduação em Engenharia Industrial (PEI) pt_BR
dc.publisher.initialsUFBApt_BR
dc.publisher.countryBrasilpt_BR
dc.subject.cnpqCNPQ::ENGENHARIAS::ENGENHARIA QUIMICA::OPERACOES INDUSTRIAIS E EQUIPAMENTOS PARA ENGENHARIA QUIMICA::OPERACOES DE SEPARACAO E MISTURApt_BR
dc.contributor.advisor1Fontes, Cristiano-
dc.contributor.advisor1Latteshttp://lattes.cnpq.br/8533422209857268pt_BR
dc.contributor.referee1Fontes, Cristiano Hora-
dc.contributor.referee2Chavez Ruiz, Juan Alberto-
dc.contributor.referee3Pacheco Filho, José Geraldo A.-
dc.creator.ID0000-0003-0116-6099pt_BR
dc.creator.Latteshttp://lattes.cnpq.br/8192996503579746pt_BR
dc.description.resumoA abertura do mercado e a possibilidade da participação de diversos supridores em redes de distribuição de Gás Natural (GN) elevaram o nível de complexidade associado ao controle de qualidade do produto final a ser disponibilizado ao mercado consumidor. Existem fornecedores que oferecem preços mais baixos, porém com um nível de qualidade inferior do combustível, o que pode contribuir para uma corrente final fora da especificação (após a mistura com outros fornecedores). Por outro lado, nem sempre é economicamente viável construir Unidades de Processamento e adquirir equipamentos analíticos para controle de qualidade do gás. Em geral, as simulações nas redes de distribuição de gás natural focam na avaliação de critérios físicos e nos aspectos associados ao equilíbrio energético. Este trabalho apresenta um modelo dinâmico de otimização, validado por estudos de caso real, para o monitoramento e controle de qualidade de um processo de mistura de gás natural que envolve diversos supridores com diferentes custos de fornecimento e diferentes níveis de qualidade (inclusive fora de especificação). Os resultados mostram a viabilidade da execução de projetos para novos supridores, bem como o fornecimento de gás natural aos clientes que o utilizam como matéria-prima e que estabelecem limites de especificação mais restritivos do que os estabelecidos pela agência reguladora. Comparando com a estratégia operacional convencional, os resultados obtidos pelo modelo de otimização proposto mostram uma redução no custo de distribuição de até 13,5% e 22,6% nos dois estudos de caso analisados, respectivamente, a saber: i) uma mistura com apenas dois fornecedores e um deles com fluxo de gás não especificado e ii) vários fornecedores, alguns fluxos de gás não especificados, misturas intermediárias ao longo da rede e uma mistura final no header pipe.pt_BR
dc.publisher.departmentEscola Politécnicapt_BR
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dc.type.degreeMestrado Profissionalpt_BR
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