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Levantamento e integração energética do processo de refinação de açúcar
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Abstract(s)
Este trabalho foi realizado no âmbito da disciplina de Dissertação/Estágio do
ramo de Optimização Energética na Indústria Química, do Mestrado em Engenharia
Química do Instituto Superior de Engenharia do Porto e foi desenvolvido na empresa
Refinarias de Açúcar Reunidas, S.A (RAR Açúcar).
Face à crise energética mundial e à globalização, o custo de produção
aumentou consideravelmente nos processos industriais e os mercados ficaram mais
competitivos. Estes aspectos levam a que cada vez mais os responsáveis industriais
se concentrem em encontrar soluções que contrariem estes aspectos. Nesta
perspectiva, a questão da conservação da energia na indústria torna-se uma medida
fundamental a adoptar na política interna de uma indústria.
Na década de 80 as técnicas de integração revelaram-se como uma ferramenta
muito útil na área da integração térmica de processos. O conceito destas técnicas
focaliza-se numa maior recuperação de energia, um menor consumo de utilidades e
consequentemente uma diminuição de custos.
Este trabalho tem como objectivo realizar um Levantamento e uma Integração
Energética do Processo de Refinação de Açúcar.
O conhecimento profundo do processo de refinação do açúcar, assim como o
conhecimento de todas as fases do processo da empresa foram um ponto de partida
fundamental para o desenrolar do trabalho.
O levantamento energético, a nível térmico, a todos os equipamentos das
linhas de produção forneceu os dados necessários para a Integração do Processo de
Refinação de Açúcar através da Metodologia de Pinch.
Como resultado da aplicação da Metodologia Pinch foram introduzidos oito
permutadores de calor obtendo-se uma recuperação de calor igual a (confidencial) kJ/dia
aliada a um investimento de (confidencial).
A recuperação energética alcançada traduz-se numa poupança de (confidencial)de
nafta/ano sendo o investimento proposto recuperado em 1,2 anos.
This report was accomplished in the extent of the course of study of the Thesis/Internship of the branch of Energy Optimization in Industrial Chemistry for the Masters Degree in Chemical Engineering of the Superior Institute of Engineering of Oporto and was developed by Refinarias de Açúcar Reunidas, S.A.. Due to the world energy crisis and globalization, the cost of production has risen considerably in the industry procedures and markets have become more and more competitive. These aspects lead the industrial responsibles to concentrate more and more in finding solutions to contradict these aspects. In this perspective, the question of energy preservation in the industrial world is a major concern in the internal policy of industry. In the 80’s, the integrating techniques revealed themselves as a very useful instrument in the area of integration of the thermal processes. The concept of these techniques focused on a greater recovery of the energy and less waste of the utility and consequently to the reduction of costs. This report has the purpose of fulfilling the Energy Integration to the Sugar Refining Process. The profound knowledge of the sugar refining process as well as the knowledge of the all the phases of the business procedure were fundamental for the development of this work. An energy survey, in thermal terms, to all the equipment of the production line supplied the necessary data for the Integration of the Sugar Refining Process through the Pinch Analysis. As a result of the Pinch Analysis a recovery of the heat of (confidential) kJ/day allied to an investment of(confidential) Euros. The energy recovery obtained translates a saving of (confidential) Euros/year being the proposal for investment recovered in 1,2 years.
This report was accomplished in the extent of the course of study of the Thesis/Internship of the branch of Energy Optimization in Industrial Chemistry for the Masters Degree in Chemical Engineering of the Superior Institute of Engineering of Oporto and was developed by Refinarias de Açúcar Reunidas, S.A.. Due to the world energy crisis and globalization, the cost of production has risen considerably in the industry procedures and markets have become more and more competitive. These aspects lead the industrial responsibles to concentrate more and more in finding solutions to contradict these aspects. In this perspective, the question of energy preservation in the industrial world is a major concern in the internal policy of industry. In the 80’s, the integrating techniques revealed themselves as a very useful instrument in the area of integration of the thermal processes. The concept of these techniques focused on a greater recovery of the energy and less waste of the utility and consequently to the reduction of costs. This report has the purpose of fulfilling the Energy Integration to the Sugar Refining Process. The profound knowledge of the sugar refining process as well as the knowledge of the all the phases of the business procedure were fundamental for the development of this work. An energy survey, in thermal terms, to all the equipment of the production line supplied the necessary data for the Integration of the Sugar Refining Process through the Pinch Analysis. As a result of the Pinch Analysis a recovery of the heat of (confidential) kJ/day allied to an investment of(confidential) Euros. The energy recovery obtained translates a saving of (confidential) Euros/year being the proposal for investment recovered in 1,2 years.
Description
Keywords
Recuperação de energia Integração energética Método de Pinch Recovery of energy Energy integration Pinch analysis
Citation
Publisher
Instituto Politécnico do Porto. Instituto Superior de Engenharia do Porto