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Process Integration combine several processes to reduce consumption of resources and harmful emissions, becoming an important asset in ensuring the sustainability of industrial processes. This paper aims to set energy performance indicators of a cane sugar refinery. A procedure that includes the energy analysis and Pinch Analysis methodologies is applied, with the use of HENSAD. Targets and energy performance indicators, currently not reported for this refinery, contribute to the definition of an energy baseline and the systematic measurement of efficiency. There is an excess in thermal power duty of 32,5 MW with respect to the minimum heating duty, which determines the research into retrofit designs of the heat exchanger network. Annual savings of 1 010 571 USD estimated in energy analysis and heat integration make the evaluation of investment projects in the energy area feasible. [ABSTRACT FROM AUTHOR]

Paper machines consume large amounts of energy and in most cases savings are possible. The drying section in the paper machine has been structurally modified through 60 years of operation, with limited use of the heat recovery system. The objective of the work is to assess the opportunities for energy conservation, through the application of energy management systems in the paper factory.Methodologies are applied for energy balance and heat integration, taking into account the requirements specified by the Cuban standard ISO 50001 for energy management systems in terms of energy review. Pinch analysis is applied using HENSAD and Aspen Energy Analyzer computing resources. The proposed energy performance indicators constitute a reference for the definition of an energy baseline. Energy conservation opportunities are identified with a total annual saving of $ 48,902 that makes it feasible to execute a project of $ 35 546, whose capital cost is estimated to be recovered in 2 years. [ABSTRACT FROM AUTHOR]

Introduction: In this work, based on the necessary technological linkage that exists in a raw sugar factory with a nearby sugar refinery, a strategy is proposed to strengthen its material and energy linkage in its development, extracting the juice from the filters. Objective: To evaluate the impact of extracting the juice from the filters on the influence on the quality of raw sugar, determining the optimal percentage of extraction to achieve the energy linkage of the combined raw sugar factory, refinery and torula cream. Materials and methods: The effect of the extraction of the juice from the filters on the quality of this type of sugar, and with it on that of refined sugar, is evaluated through the statistical modeling of the process through the aggregation of the models of the component elements, considering variations of the models in the purification stage for different per hundreds of extraction. Results and discussion: The global models of the process obtained through the aggregation of models of the partial stages are effective for predicting the sugar quality parameters. The extraction of the juice from the filters significantly increases the amount of leftover bagasse in the production of raw sugar. Conclusions: The extraction of the juice from the filters benefits the quality parameters of the produced sugar and significantly increases the amount of excess bagasse in the production of raw sugar, being an alternative to contribute to other productive demands. [ABSTRACT FROM AUTHOR]