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Advisor(s)
Abstract(s)
Até 2020, a Europa terá de reduzir 20% das suas emissões de gases com efeito de
estufa, 20% da produção de energia terá de ser proveniente de fontes renováveis e a
eficiência energética deverá aumentar 20%. Estas são as metas apresentadas pela
União Europeia, que ficaram conhecidas por 20/20/20 [1].
A Refinaria de Matosinhosé um complexo industrial que opera no sector da refinação e
que apresenta preocupações ao nível da eficiência energética e dos aspectos
ambientais subjacentes.
No âmbito da racionalização energética das refinarias, a Galp Energia tem vindo a
implementar um conjunto de medidas, adoptando as melhores tecnologias disponíveis
com o objectivo de diminuir os consumos de energia, promover a eficiência energética
e reduzir as emissões de dióxido de carbono. Para ir de encontro a estas medidas foi
elaborado um estudo comparativo que permitiu à empresa definir as medidas
consideradas prioritárias. Uma solução encontrada visa a execução de projectos que
não requerem investimento e que têm acções imediatas, tais como o aumento da
eficiência energética das fornalhas [1].
Este trabalho realizado na Galp Energia S.A. teve como objectivo principal a
optimização energética da Unidade de Desalfatação do Propano da Fábrica de Óleos
Base. Esta optimização baseou-se no aproveitamento energético da corrente de fundo
da coluna de rectificação T2003C com uma potência calorífica de 2,79 Gcal/h.
Após levantamento de todas as variáveis do processo relativas a esta unidade,
especialmente a potência calorífica das correntes envolvidas chegou-se á conclusão
que a fornalha H2101 poderá ser substituída por dois permutadores, reduzindo desta
forma os consumos energéticos. Pois a corrente de fundo da coluna T2003 com uma
potência calorífica 2,79 Gcal/h poderá permutar calor com a corrente da mistura
asfalto com propano, fazendo com que esta atinja temperatura superior à obtida com a
fornalha em funcionamento.
A análise económica ao consumo e respectivo custo do fuelóleo na fornalha para o
período de um ano foi realizada, sendo o seu custo de combustível de 611.396,00 €. O
valor da aquisição dos permutadores é 86.355,97€, sendo rentável a alteração
proposta neste projecto.
By 2020, Europe will have to reduce 20% of their emissions of greenhouse gases, 20% of energy production must be from renewable sources and energy efficiency should increase by 20%. These are the goals submitted by the European Union, which became known for 20/20/20 [1]. The Matosinhos Refinery is as industrial complex that is active in refining and presenting concerns at the level of energy efficiency and environmental issues underlying them. In the context of energy rationalization of refineries, Galp Energia has been implementing a series of measures, by adopting best available technologies with the goal of lowering energy consumption, promote energy efficiency and reduce emissions of carbon dioxide. To meet these measures was drawn up a comparative study that allowed the company of define the measures identified as priorities. A solution is aimed at implementing projects that do not require investment and that have immediate actions, such as increasing the energy efficiency of furnaces [1]. This work performed at Galp Energia’s main global was to optimize energy unit of Desasfaltação Propane Factory Oil Base. This optimization was based on current energy use background T2003C rectifying column with a heat output of 2.79 Gcal/ h. After surveying all process variables related to this unit, especially the heat output of the currents involved came to the conclusion that the furnace H2101 may be replaced by two heat exchangers, thereby reducing energy consumption. For the current bottom of the column with a thermal T2003C 2,79 Gcal/h may exchange heat with the flow of asphalt mixture with propane, so it reaches higher temperature than that obtained with the furnace running. The economic analysis of consumption and the cost of fuel in the furnace for a period of one year was performed, and its fuel cost of € 611.396,00. The acquisition of heat exchangers is € 86,355.97, being profitable in the proposed amendment in this project.
By 2020, Europe will have to reduce 20% of their emissions of greenhouse gases, 20% of energy production must be from renewable sources and energy efficiency should increase by 20%. These are the goals submitted by the European Union, which became known for 20/20/20 [1]. The Matosinhos Refinery is as industrial complex that is active in refining and presenting concerns at the level of energy efficiency and environmental issues underlying them. In the context of energy rationalization of refineries, Galp Energia has been implementing a series of measures, by adopting best available technologies with the goal of lowering energy consumption, promote energy efficiency and reduce emissions of carbon dioxide. To meet these measures was drawn up a comparative study that allowed the company of define the measures identified as priorities. A solution is aimed at implementing projects that do not require investment and that have immediate actions, such as increasing the energy efficiency of furnaces [1]. This work performed at Galp Energia’s main global was to optimize energy unit of Desasfaltação Propane Factory Oil Base. This optimization was based on current energy use background T2003C rectifying column with a heat output of 2.79 Gcal/ h. After surveying all process variables related to this unit, especially the heat output of the currents involved came to the conclusion that the furnace H2101 may be replaced by two heat exchangers, thereby reducing energy consumption. For the current bottom of the column with a thermal T2003C 2,79 Gcal/h may exchange heat with the flow of asphalt mixture with propane, so it reaches higher temperature than that obtained with the furnace running. The economic analysis of consumption and the cost of fuel in the furnace for a period of one year was performed, and its fuel cost of € 611.396,00. The acquisition of heat exchangers is € 86,355.97, being profitable in the proposed amendment in this project.
Description
Keywords
Refinação Integração energética Balanços energéticos Fornalha Permutadores de calor Refining Energy integration Energy balances Furnaces Heat exchangers
Citation
Publisher
Instituto Politécnico do Porto. Instituto Superior de Engenharia do Porto