Publicação
Estudo, simulação e desenho de uma unidade de destilação para a produção do EcoGreen Power Plus
| Resumo: | The aim of this work is to simulate and design a distillation unit to produce a middle distillate, EcoGreen Power Plus, while maintaining the production of fuel oil. The purpose of Eco-Oil is to provide a sustainable fuel for marine transportation that meets the specifications of the ISO-F-DMA category for marine distillate fuels, thereby contributing to the energy transition.For this study, the SP2, feed of the existing flash tank, and SP7, fuel oil currently obtained, process streams were characterized to simulate the separation of their components. Then distillation column and flash tank models were formulated, and their numerical implementation was carried out using the GNU Octave programming language. The operating conditions and parameters that allowed a higher middle distillate production were studied. The configurations were evaluated considering a minimum pressure of 0,100 bar and a maximum temperature of 200 ºC.In configuration 1, consisting of a distillation column with side draw fed by the SP7 stream, the yield of middle distillate was 15,2 %, with the product being out of specification. In configuration 2, consisting of two flash tanks in series fed by the SP2 stream, resulted in an in-specification middle distillate with a yield of 26,2 %. In configuration 3, consisting of a flash tank fed by the SP2 stream followed by a distillation column, an in-specification middle distillate with a yield of 32,6 % was obtained. Although configuration 3 resulted in a higher yield of middle distillate, the investment and operational costs are higher, therefore future optimization of the configurations should be carried out.In this work, two scenarios were studied for configuration 2. In scenario 1, considering a fuel oil flash point of 120 ºC, a middle distillate yield of 16,9 % was obtained. In scenario 2, considering a fuel oil flash point of 140 ºC, a middle distillate yield of 29,6 % was obtained.Both flash tanks were sized considering the two scenarios of operating conditions of interest. For the first flash tank, a height of 3,24 m and a diameter of 1,05 m were obtained, resulting in a volume of 2,81 m³. For the second flash tank, a height of 3,23 m and a diameter of 0,75 m were obtained, resulting in a volume of 1,43 m³. Finally, these dimensions were adjusted considering some functional characteristics of the equipment to ensure an efficient operation. |
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| Autores principais: | Quadros, Francisco Diogo Fernandes Lucena |
| Assunto: | Marine Fuel Middle Distillate Distillation Flash Separation Modelling and Simulation Combustível Marítimo Destilado Médio Destilação Separação Flash Modelação e Simulação |
| Ano: | 2024 |
| País: | Portugal |
| Tipo de documento: | dissertação de mestrado |
| Tipo de acesso: | acesso embargado |
| Instituição associada: | Universidade de Coimbra |
| Idioma: | português |
| Origem: | Estudo Geral - Universidade de Coimbra |
| Resumo: | The aim of this work is to simulate and design a distillation unit to produce a middle distillate, EcoGreen Power Plus, while maintaining the production of fuel oil. The purpose of Eco-Oil is to provide a sustainable fuel for marine transportation that meets the specifications of the ISO-F-DMA category for marine distillate fuels, thereby contributing to the energy transition.For this study, the SP2, feed of the existing flash tank, and SP7, fuel oil currently obtained, process streams were characterized to simulate the separation of their components. Then distillation column and flash tank models were formulated, and their numerical implementation was carried out using the GNU Octave programming language. The operating conditions and parameters that allowed a higher middle distillate production were studied. The configurations were evaluated considering a minimum pressure of 0,100 bar and a maximum temperature of 200 ºC.In configuration 1, consisting of a distillation column with side draw fed by the SP7 stream, the yield of middle distillate was 15,2 %, with the product being out of specification. In configuration 2, consisting of two flash tanks in series fed by the SP2 stream, resulted in an in-specification middle distillate with a yield of 26,2 %. In configuration 3, consisting of a flash tank fed by the SP2 stream followed by a distillation column, an in-specification middle distillate with a yield of 32,6 % was obtained. Although configuration 3 resulted in a higher yield of middle distillate, the investment and operational costs are higher, therefore future optimization of the configurations should be carried out.In this work, two scenarios were studied for configuration 2. In scenario 1, considering a fuel oil flash point of 120 ºC, a middle distillate yield of 16,9 % was obtained. In scenario 2, considering a fuel oil flash point of 140 ºC, a middle distillate yield of 29,6 % was obtained.Both flash tanks were sized considering the two scenarios of operating conditions of interest. For the first flash tank, a height of 3,24 m and a diameter of 1,05 m were obtained, resulting in a volume of 2,81 m³. For the second flash tank, a height of 3,23 m and a diameter of 0,75 m were obtained, resulting in a volume of 1,43 m³. Finally, these dimensions were adjusted considering some functional characteristics of the equipment to ensure an efficient operation. |
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