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Introduction: In the pedagogical treatment of interdisciplinarity in Cuba, important actions are carried out as part of the continuous transformation process of the educational system. In the present investigation, the knowledge systems of the subjects with the greatest contribution to process safety are identified. Objective: To analyze the interdisciplinary methodological activity in the Chemical Engineering career in terms of process safety for its articulation with national security and defense. Materials and Methods: The analysis is carried out based on Study Plan E, Preparation for Defense discipline program, disciplines programs of the Chemical Engineering career and documents issued by the Ministries of Higher Education and the Revolutionary Armed Forces. A case study is presented. Results and Discussion: Hazards identification, vulnerability and disaster risks; potential damage and actions to eliminate and/or reduce the effects of events are essential components for identifying knowledge systems related to process safety and links to national security and defense. Conclusions: Methodological activity has led to define that the disciplines Process Engineering, Chemical and Biological Fundamentals, Fundamentals of Automation and Unit Operations and Processes are made up of subjects that articulate process safety with the subject of security and national defense of the discipline Preparation for Defense. The procedure and the general systematic approach for safe design contribute to consolidate the interdisciplinary link in the Plant Design subject. [ABSTRACT FROM AUTHOR]

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: Several factors are identified in the raw sugar mill that increase energy consumption and introduce technical, economic and environmental risks Objective: To evaluate the energy system through the application of energy management systems. Materials and Methods: The energy review included the application of traditional methodologies for the thermoenergetic balance and the use of Sistema Termo Azúcar 4.1 software according to the Cuban Standard ISO 50001. Results and Discussion: An energy baseline is established, which allows the industry in a comparative way assess energy performance of the process. Conclusions: The use of STA 4.1 software in the studied industry constituted a useful, practical and reliable tool for analyzing the energy system. High level of technology obsolescence and poor condition of thermal insulation constitute the main technology deficiencies of industry. The economic benefits obtained with the modification of generation and cogeneration system and thermal insulation rehabilitation justify the proposal of three investment projects that contribute to increase the efficiency in energy use, whose recover investment is estimated in 3 years. [ABSTRACT FROM AUTHOR]

Drying algal biomass with the use of solar radiation is an economical and environmentally compatible option. The aim of this work was to design an indirect solar dryer with natural air circulation for seaweeds drying. The equipment supports discrete quantities of wet biomass and is protected from environmental situations that may damage the product; it does not need electricity to operate and the construction and operating costs are low. This comprises a collector made of copper plates for air circulation, heated by solar radiation, a glass cover and drying trays with a wooden structure. The dryer was designed to obtain 0, 3 kg / day of dry biomass. The methodology allows construction and operation of a flexible solar dryer in different operating conditions for research on seaweeds. Correspondingly with environmental and operating conditions the design included estimation of drying time, the determination of drying area, number of trays, air flow from the collector to the trays, collector sizing, heat transfer area, temperature reached by air and collector efficiency. [ABSTRACT FROM AUTHOR]

An energy study was performed at Pulpa Cuba Paper Mill, located in Sancti Spiritus, where an energy management system was applied according to NC: ISO 50001, in order to assess the energy system by applying energy management systems for energy and water reduction in the paper mill, in which the current steam generation, distribution and consumption system is diagnosed. The proposal of a modified energy scheme with 1 MW Backpressure Steam Turbine Generator and rehabilitation of the original boiler or installing a lower capacity boiler contributes to save financial resources by the concept of water, fuel and electricity. The implementation of four projects will save 3,095,574 CUC / y and an average payback period of about 1 year is expected. [ABSTRACT FROM AUTHOR]

This paper shows the design of an experimental laboratory for the cultivation of macroalgae Ulva lactuca Linnaeus. The experimental study is the initial stage of a project for reducing industrial emissions of Carbon Dioxide by capturing in seaweeds intensive culture systems. The bioreaction system comprises a culture tank with continuous feeding of sea water, air and nutrients. System assessment is performed by determining the algal biomass yield and bioreactor system behavior, based on the consumption of nutrients. From the results a scale up for a pilot scale culture of seaweeds is performed. [ABSTRACT FROM AUTHOR]

At the present time, to several decades of arising risk analysis, it is the angular stone of safety management in many industries, but practice continues not very extended in academic entities. The identified problem has to do with the absence of a Loss Prevention Management System that allows identify activities, equipment, materials or management strategies that can be loss causes or potential sources of human, financial and material being necessary to make decisions in hierarchical to order them and propose improvements to minimize the problems identified. In this work, a methodological guide is designed, which includes the use of processes safety tools to consider in developing a management system for loss prevention, to help identify, reduce and / or remove the causes of accidents by fire, explosion, or contamination, and financial costs associated with them. [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]

Introduction: The work presents the experiences in development to make possible the alternatives of production chain in environmentally compatible conditions, of the sugar cane company Heriberto Duquesne based on the concept of biorefinery and using the circular economy. Objective: To show an effective and improving path for training doctors who contribute with their research to strengthen the production chain of the company for its operation and development as a biorefinery so that its business volumes gradually grow. Materials and methods: The research is carried out by articulating the postgraduate activities of the company's professionals who are surpassed in postgraduate master's degrees and doctorates who act as coordinators of projects that bring together the actions of the master's degree and of professionals who are not incorporated into the master's degree courses in a project work system. Results and discussion: This action is a component of an anticipatory system of strategic management, whose mission is to contribute to learning the best way of sustainable development through increasing linkage with other sectors of the country's economic and social life. Conclusions: The work offers the possibility of contributing to the generation of knowledge for sustainable industrial development that favors economy, and also the social impact of the territories through the resuscitation of the batey of this company in the sugar cane industry. [ABSTRACT FROM AUTHOR]

Se describe la evaluación tecnológica de la planta cubana de papel Papelera Pulpa Cuba a fin de estimar la factibilidad de un sistema para el procesamiento de sus aguas residuales. Se caracterizaron los procesos mediante diagramas fuente-sumidero y se simuló la recuperación de agua y fibra con el sistema propuesto de recuperación de aguas residuales. Los resultados indican buenos beneficios en materia de ahorro de agua fresca y energía.

The aim of this paper is to assess the current operating and safety conditions of biological treatment systems for wastewater in the centers of swinish and poultry breeding at Villa Clara Water Management Company, with the purpose of setting a group of organizational, technical and human measures that contributes to prevent contamination and minimize biological risks. In this way it can be guaranteed the protection to the workers, the facilities, community and the environment, to have a sure occupational atmosphere in the organization. As a result of the evaluation the factors that affect the operation of the biodigestion system and the security of the process are defined. [ABSTRACT FROM AUTHOR]