Automação do controle de temperatura da água gelada da metalizadora
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Arquivos
Data
2023-07-04
Tipo de documento
Monografia
Título da Revista
ISSN da Revista
Título de Volume
Área do conhecimento
Engenharias
Modalidade de acesso
Acesso aberto
Editora
Autores
Oliveira, Adelque Granvilla de
Orientador
Mveh, Jean de Dieu Briand Minsongui
Coorientador
Resumo
No presente trabalho foi realizada uma análise dos problemas de instabilidade
do processo de produção do filme de polipropileno biorientado (BOPP) metalizado.
Através deste estudo foi possível diagnosticar uma falha no controle de temperatura
da água gelada fornecida pela área de Utilidades da empresa. Com isso, sucedeu-se
o estudo de caso para resolver esse problema de engenharia através do
desenvolvimento da análise, em conjunto com a apresentação de propostas para
corrigir ou minimizar os problemas de instabilidade do processo. Desta forma,
realizou-se um estudo dos conceitos básicos sobre trocadores de calor industrial, seus modelos e suas aplicações, bem como os conceitos de automação e o que a
compõem. Também foi apresentada a história dos filmes de BOPP e alguns dos
indicadores-chave de produção (KPI’s). Para a solução do problema avaliou-se a
necessidade de automatizar as válvulas de retorno do trocador de calor, trazendo
como consequência eliminar o fator humano na parte operacional. O projeto foi
dividido em várias etapas, onde num primeiro momento foi realizada a instalação dos
instrumentos de controle, após a instalação deles foi realizada uma série de testes de
funcionamento e alguns ajustes conforme necessidade de operação. Após a
instalação do projeto, apresentou-se como consequência a disponibilidade de
máquina e o ganho de produtividade. Diante disso, não há outra conclusão para este
trabalho senão o entendimento de que todas as expectativas propostas foram
atendidas, visto que foi apresentado um estudo de caso para a solução do problema
de variação da temperatura da água gelada no processo de metalização, onde foram
consideradas todas as circunstâncias que o compõe, bem como apresentada
sugestão de tratativa para esse problema.
In the present work, an analysis of the instability problems in the production process of metallized bioriented polypropylene film (BOPP) will be carried out. Through this study it will be possible to diagnose a failure in the temperature control of the cold water supplied by the company's Utilities area. Consequently, a case study will be elaborated to solve this engineering problem, through the development of the analysis together with the presentation of proposals to correct or minimize the instability problems in the process. Thus, a study of the basic concepts of industrial heat exchangers, their models and applications, as well as the concepts of automation and its components will be carried out. The history of BOPP films and some key production indicators (KPIs) will also be presented. To solve the problem, the need to automate the heat exchanger return valves was evaluated, which would imply eliminating the human factor in the operational part. The project was divided into several stages, where initially the installation of the control instruments was carried out. After their installation, a series of operational tests and some adjustments were carried out according to the operational needs. Once this stage was completed, a control spreadsheet was created in which the temperature variation was recorded for approximately 15 days, with 4 daily readings. Based on these readings, it was possible to conclude that the process was completely controlled and there were no longer any temperature fluctuations. As a result, machine availability and increased productivity were achieved. In consequence, no other conclusion can be reached in this work other than the understanding that all the expectations raised were met, since a case study was presented to solve the problem of cold water temperature variation in the metallization process, taking into consideration all relevant circumstances and suggesting approaches to address this issue.
In the present work, an analysis of the instability problems in the production process of metallized bioriented polypropylene film (BOPP) will be carried out. Through this study it will be possible to diagnose a failure in the temperature control of the cold water supplied by the company's Utilities area. Consequently, a case study will be elaborated to solve this engineering problem, through the development of the analysis together with the presentation of proposals to correct or minimize the instability problems in the process. Thus, a study of the basic concepts of industrial heat exchangers, their models and applications, as well as the concepts of automation and its components will be carried out. The history of BOPP films and some key production indicators (KPIs) will also be presented. To solve the problem, the need to automate the heat exchanger return valves was evaluated, which would imply eliminating the human factor in the operational part. The project was divided into several stages, where initially the installation of the control instruments was carried out. After their installation, a series of operational tests and some adjustments were carried out according to the operational needs. Once this stage was completed, a control spreadsheet was created in which the temperature variation was recorded for approximately 15 days, with 4 daily readings. Based on these readings, it was possible to conclude that the process was completely controlled and there were no longer any temperature fluctuations. As a result, machine availability and increased productivity were achieved. In consequence, no other conclusion can be reached in this work other than the understanding that all the expectations raised were met, since a case study was presented to solve the problem of cold water temperature variation in the metallization process, taking into consideration all relevant circumstances and suggesting approaches to address this issue.
Palavras-chave
Automação, Metalizadora, Controle de temperatura