Petrochemical Systems
Mostrando 1-12 de 26 artigos, teses e dissertações.
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1. Creep Parameters and Dislocation Substructure in AISI 316 Austenitic Stainless Steel From 600ºC to 800ºC
Stainless steels are well known by their corrosion resistance. The austenitic types, in particular, are also applied as structural components in engineering systems operating at high temperatures such as nuclear reactors, petrochemical furnaces and turbines. For these applications operational temperatures may go up to 800ºC. Under constant load applications
Mat. Res.. Publicado em: 06/07/2017
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2. Mixed Cultures Fermentation for the Production of Poly-ß-hydroxybutyrate
Poly-ß-hydroxybutyrate (PHB) is a biodegradable intracellular microbial product produced by many bacteria and it is comparable to some of the petrochemical derived thermoplastics such as polypropylene. One of the main barriers for the commercial exploitation is the high cost of the substrate for the production of biopolymer. The utilization of mixed microbi
Braz. arch. biol. technol.. Publicado em: 26/11/2013
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3. Two-phase experimental heat transfer studies on a water-diesel system in a shell and tube heat exchanger
Two-phase heat transfer involving two immiscible systems is gaining importance in petrochemical and allied industries. Varying compositions of diesel and water were experimentally studied in a 1:2 shell and tube heat exchanger. The data on pure water and diesel were fitted to an equation of the form. h1φ = a NmRe.The two-phase multiplier, Φ L, was related
Brazilian Journal of Chemical Engineering. Publicado em: 2012-06
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4. Aproveitamento de membranas de osmose inversa descartadas da indústria para o reuso da purga de torres de resfriamento
Reverse osmosis plants use new membranes to produce demineralized water. After a period of three to five years, the membranes are replaced by news ones due to levels of treatment which are not suitable for production of water with the desired characteristics. This process generates a lot of rejected modules causing an environmental problem. The present work
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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5. Qualidade da água potável consumida na Cidade do Salvador - Bahia
The research talks about the drinking water which is consumed in Salvador city and presents the main health consequences of the contaminants that can be found in the water and the prevention measurements more suitable to remove them. Contaminations which can be found in the water sources come from the growth industrial activities, synthetic agriculture compo
Publicado em: 2010
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6. Estudo de algoritmos estocásticos de otimização para avaliação da oxidação de etanol a acetaldeído / Study of stochastic optimization algorithms for the evaluation of oxidation of acetaldehyde
A utilização de rotas verdes para obtenção de químicos é hoje uma área de grande interesse mundial. A necessidade de se desenvolver e estudar processos químicos que sejam, em sua integridade, independentes da via petroquímica são prementes. O etanal (acetaldeído), importante componente em diversos processos químicos, pode ser obtido pela oxidaç�
Publicado em: 2010
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7. Reconfiguração dinâmica de estratégias distribuídas em dispositivos foundation fieldbus para a otimização de processos na indústria do petróleo
The petrochemical industry has as objective obtain, from crude oil, some products with a higher commercial value and a bigger industrial utility for energy purposes. These industrial processes are complex, commonly operating with large production volume and in restricted operation conditions. The operation control in optimized and stable conditions is import
Publicado em: 2009
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8. Waste management focousing on industrial sustainability study case: petrochemical industries in Rio de Janeiro state / Gerenciamento de resíduos buscando a sustentabilidade industrial estudo de caso: indústrias petroquímicas localizadas no estado do Rio de Janeiro
This research has the aim of evaluating environmental management systems of five petrochemical industries in the State of Rio de Janeiro. This studys main focus is on the management of solid and liquid wastes which are generated during producing processes and the commitment with Brazilian laws applied to environmental protection. Following the development on
Publicado em: 2009
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9. Capital structure and national governance systems : a study based on the privatization of Brazilian petrochemicals industry / Estrutura de capital e sistemas nacionais de governança : um estudo a partir da privatização do setor petroquimico brasileiro
Este trabalho se dedica a estudar o impacto que os diversos arranjos industriais exercem nas estruturas financeiras. Através da análise da evolução recente do setor petroquímico brasileiro, isto é, sua reestruturação patrimonial após a privatização, buscou-se demonstrar como a complementaridade entre as estruturas criadas ao longo da evolução do
Publicado em: 2009
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10. A contribution for studing of robust control / Uma contribuição ao estudo de controladores robustos
The model based predictive controller (MPC) has been successfully applied in industry, with particular emphasis on the petrochemical industry. The basic feature of MPC algorithms is based on the formulation of an optimization problem, for calculating the sequence of control moves that minimize a performance function in a time horizon with the best informatio
Publicado em: 2009
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11. Análise termodinâmica das reformas do metano (oxidativa e autotérmica), do etanol e da nafta
Catalytic reforming of hydrocarbons or other organic species is a technology usually employed in either improving traditional energy sources or producing alternative energy sources. Amongst the technologies employed in improving traditional energy sources, one can include catalytic reforming of petrochemical naphtha. Although being also employed to produce h
Publicado em: 2009
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12. Avaliação de controle neural a um processo de quatro tanques acoplados
The main goal of this doctorate thesis is the evaluation of neural control on a four interconnected tanks process, in laboratory environment, where the controlled variable is the water level height of the fourth tank. The dynamics of this process is non linear, as the outflow from the tanks depends on the square root of corresponding water height. This type
Publicado em: 2009