Oil Refinery
Mostrando 25-36 de 72 artigos, teses e dissertações.
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25. Removal of phenol and conventional pollutants from aqueous effluent by chitosan and chitin
The present study deals with phenol adsorption on chitin and chitosan and removal of contaminants from wastewater of a petroleum refinery. The adsorption kinetic data were best fitted to first- and second-order models for chitosan and chitin, respectively. The results of adsorption isotherms showed Langmuir model more appropriately described than a Freundlic
Química Nova. Publicado em: 2009
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26. Avaliação da remoção de sulfeto de hidrogênio do gás natural em uma coluna de absorção
Natural gas, although basically composed by light hydrocarbons, also presents in its composition gaseous contaminants such as CO2 (carbon dioxide) and H2S (hydrogen sulfide). Hydrogen sulfide, which commonly occurs in oil and gas exploration and production activities, besides being among the gases that are responsible by the acid rain and greenhouse effect,
Publicado em: 2009
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27. Estudo de tratamento de interface proveniente de polidutos
The São Paulo Brasília Pipeline (OSBRA), owed by PETROBRAS, starts at the Planalto Refinery (REPLAN) and supplies gasoline, Diesel oil and liquefied petroleum gas (LPG) to the mid-west region of Brazil. The pipeline is 786 kilometers long with diameter of 20 inches in its first segment and 178 kilometers with 12 inches of diameter in the second. The fuels
Publicado em: 2009
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28. Estudo de planejamento das operaÃÃes logÃsticas em uma refinaria de petrÃleo visando a melhoria da rentabilidade: o caso da Lubnor / Planning of study of the logistic operations in an oil refinery aiming at the improvement of the yield: the case of the Lubnor
A Lubnor à uma refinaria de pequeno porte da Petrobras instalada dentro da cidade de Fortaleza-CE, que processa petrÃleos do tipo naftÃnico, pouco disponÃveis na natureza. A refinaria dispÃe hoje de trÃs opÃÃes desses Ãleos para processamento e produz basicamente asfaltos e lubrificantes naftÃnicos, sendo a Ãnica produtora nacional destes Ãltimos
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/09/2008
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29. Comparison between four and seven-day Ceriodaphnia dubia survival and reproduction test protocols using oil refinery effluent samples
O objetivo do presente estudo foi comparar os protocolos de sobrevivência e reprodução de Ceriodaphnia dubia com 7 e 4 dias de duração, avaliando a toxicidade de amostras de efluentes de refinaria de petróleo. Ambos os protocolos apresentaram NOECs idênticos para 3 das 6 amostras testadas. Com uma das amostras o NOEC no ensaio de 4 dias ficou numa con
Brazilian Archives of Biology and Technology. Publicado em: 2008-02
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30. Critical rains, planning and run-off management using geografic information system on Presidente Bernardes - Cubatão Refinery (RPBC) / Precipitações criticas, planejamento e gerenciamento das drenagens superficiais utilizando sistemas de informações geograficas : Refinaria Presidente Bernardes - Cubatão (RPBC)
The increase on the rains intensity veryfied on last decades has requested the conveyances over than their capacity, showing deficiencies on old designed systems. At the same time, society has the crying need of water resources conservation, justified by the water s scarcity. In an oil refinery this subject is particularly important because of the great amou
Publicado em: 2008
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31. Análise da prestação de serviços de caldeiraria na paradas programadas de manutenção de plantas industriais da refinaria Landulpho Alves: RLAM.
Maintenance turnarounds on industrial plants is an activity that strongly influences the business results of an oil refinery. So, the management of turnarounds should be analyzed under a strategic approach. Among the activities of maintenance that are carried through during a turnaround, the most important involve maintenance jobs on static equipments such a
Publicado em: 2008
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32. ASSESSMENT OF BETTER LOCATION OF ONLINE BLEND SYSTEM OF DIESEL IN REDUC / AVALIAÇÃO DA MELHOR LOCALIZAÇÃO DO SISTEMA DE MISTURA EM LINHA DE DIESEL DA REDUC
The aim of the dissertation is to determine the ideal location for the construction of an online diesel blending system in Duque de Caxias Refinery - REDUC. The model used in this study is similar to that used for determining the best location for a distribution center. In this case, specifically, the objective function of the problem is to minimize costs wi
Publicado em: 2008
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33. Optimization models for diesel production : an industrial aplication / Modelos de otimização na produção de oleo diesel : uma aplicação industrial
This work has been developed integrating two traditional concepts of operational research and chemical engineering, respectively: supply chain optimization and global process optimization. The focus of the study is the PETROBRAS Paulínia Refinery, REPLAN, which integrates the downstream petroleum and derivatives complex of Brazil. There are two production t
Publicado em: 2008
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34. AnÃlise de comunidades microbianas de solo de manguezal por T-RFLP e microarranjos de DNA / AnÃlise de comunidades microbianas de solo de manguezal por T-RFLP e microarranjos de DNA
The mangroves are essistemas important and productive, found along the coastline of tropical and subtropical regions. Important processes such as nutrient cycling, are directly connected to the activity of soil microbial communities. Given its strategic position the mangroves are very impacted the world. In Brazil, important areas such as the Bay of All Sain
Publicado em: 2008
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35. Development of a computaciona model for thermal cracking processes / Desenvolvimento de modelo computacional para craqueamento termico
The mathematical modeling and the computational simulation of a process furnace for thermal conversion of heavy oil fractions is developed in this work. Kinetics of conversion reactions is from Sugaya (1993). It is based in a first order irreversible reaction with 9 lumps and 24 pseudocomponents. The 24 pseudocomponents are characterized and their properties
Publicado em: 2008
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36. Organização na produção por processos contínuos: prática, conceitos e métodos de projeto para fronteiras móveis interpenetrantes. / Organization in continous processes production: practice, concepts, and method for moving and interpenetrate frontiers.
In the continuous processes is observed a strong participation of the Engineering and the Maintenance at the operation of production systems, at the same time the Operation interacts very intensively with the activities of those two functions. Complex interventions involving all these three functions occur very frequently due to the technological and logisti
Publicado em: 2008