Simulação e controle de um tanque de nível usando o software Aveva Process Simulation
Data
2022-12-06
Autores
Lima, Felippe de Andrade 
Almeida, Nilton Lopes
Orientadores
Silva, Carlos Alexandre Moreira da
Tipo
Trabalho de conclusão de curso
Título da Revista
ISSN da Revista
Título de Volume
Resumo
Em muitos processos, a manutenção do nível de líquido utilizando instrumentos de
monitoramento não exigem muitos estudos devido a simplicidade desses processos, sendo
necessário apenas uma chave de nível para manipular a abertura e fechamento da válvula de
entrada ou saída do fluido, permitindo dessa maneira a manutenção do nível. Porém, em
diversos processos industriais é necessário realizar um estudo minucioso, dada a complexidade
e interação de diversos equipamentos dentro de um processo. Os softwares de simulação
auxiliam nesta etapa do controle de processo. O presente trabalho abordou a simulação e
controle de nível de produtos derivados do petróleo em um tanque de nível, utilizando o
software Aveva Process Simulation. Desta forma, realizou-se estudos do fluido de processo
composto por n-hexano, n-heptano e n-decano, sendo hidrocarbonetos derivados do petróleo e
encontrados em tanques da indústria petroquímica, avaliando-se a dinâmica de um tanque. Em
função do comportamento dinâmico, foi possível exportar os dados obtidos no Aveva para o
Excel, de onde foi possível analisar os gráficos e obter a função de transferência do sistema.
Utilizou-se de um método heurístico para realizar a sintonia do controlador PID, onde o
controlador atua na válvula de entrada do tanque causando a variação da altura do nível com a
finalidade de manter o nível do tanque em um determinado set-point durante o processo. Com
a sintonia, possível obter os parâmetros Kc= 68,75, Ti = 36 s e Td = 1 s da equação geral do
controlador, onde foi testado, obtendo-se uma resposta rápida e eficiente para o controlador. A
partir dos dados obtidos deste estudo, avaliou-se as funcionalidades do software Aveva Process
Simulation. Os resultados obtidos pelo simulador Aveva Process Simulation foram
promissores, e ajudaram a complementarem o entendimento da dinâmica e controle de sistemas
de nível. As atividades relacionadas na simulação de tanques de nível, ajudam a entender as
demais funcionalidades do Aveva Process Simulation, avaliando sua confiabilidade, podendo
ajudar futuros trabalhos que utilizem o mesmo simulador.
In many processes, maintaining the liquid level using monitoring instruments does not require many studies due to the simplicity of these processes, requiring only a level key to manipulate the opening and closing of the fluid inlet or outlet valve, thus allowing the maintenance of the level. However, in several industrial processes it is necessary to carry out a thorough study, given the complexity and interaction of various equipment within a process. Simulation software assists in this stage of process control. The present work addressed the simulation and level control of petroleum products in a level tank, using the Aveva Process Simulation software. Thus, fluid studies of the process fluid were carried out composed of nhexane, nheptane and ndecane, being hydrocarbons derived from petroleum and found in tanks of the petrochemical industry, evaluating the dynamics of a tank. Due to the dynamic behavior, it was possible to export the data obtained in Aveva to Excel, from where it was possible to analyze the graphs and obtain the system transfer function. A heuristic method was used to perform the tuning of the PID controller, where the controller acts on the inlet valve of the tank causing the variation of the height of the level in order to maintain the tank level in a given setpoint during the process. With the tuning, it is possible to obtain 𝐾𝑐 the parameters = 68.75, 𝜏𝑖 = 36 s and 𝜏𝑑= 1 s of the general equation of the controller, where it was tested, obtaining a fast and efficient response to the controller. Based on the data obtained from this study, the functionalities of the Aveva Process Simulation software were evaluated. The results obtained by the Aveva Process Simulation simulator were promising, and helped to complement the understanding of the dynamics and control of level systems. The activities related in the simulation of level tanks, help to understand the other features of Aveva Process Simulation, evaluating its reliability, and can help future work that uses the same simulator.
In many processes, maintaining the liquid level using monitoring instruments does not require many studies due to the simplicity of these processes, requiring only a level key to manipulate the opening and closing of the fluid inlet or outlet valve, thus allowing the maintenance of the level. However, in several industrial processes it is necessary to carry out a thorough study, given the complexity and interaction of various equipment within a process. Simulation software assists in this stage of process control. The present work addressed the simulation and level control of petroleum products in a level tank, using the Aveva Process Simulation software. Thus, fluid studies of the process fluid were carried out composed of nhexane, nheptane and ndecane, being hydrocarbons derived from petroleum and found in tanks of the petrochemical industry, evaluating the dynamics of a tank. Due to the dynamic behavior, it was possible to export the data obtained in Aveva to Excel, from where it was possible to analyze the graphs and obtain the system transfer function. A heuristic method was used to perform the tuning of the PID controller, where the controller acts on the inlet valve of the tank causing the variation of the height of the level in order to maintain the tank level in a given setpoint during the process. With the tuning, it is possible to obtain 𝐾𝑐 the parameters = 68.75, 𝜏𝑖 = 36 s and 𝜏𝑑= 1 s of the general equation of the controller, where it was tested, obtaining a fast and efficient response to the controller. Based on the data obtained from this study, the functionalities of the Aveva Process Simulation software were evaluated. The results obtained by the Aveva Process Simulation simulator were promising, and helped to complement the understanding of the dynamics and control of level systems. The activities related in the simulation of level tanks, help to understand the other features of Aveva Process Simulation, evaluating its reliability, and can help future work that uses the same simulator.