Lizandro de Sousa Santos
@uff.br
Department of Chemical and Petroleum Engineering
Universidade Federal Fluminense
RESEARCH INTERESTS
Optimization
Optimal Control
Modeling and Simulation
Scopus Publications
Scopus Publications
Thiago da Cunha Rocha Devessa de Miranda and Lizandro de Sousa Santos
Wiley
AbstractMany chemical processes commonly use many instruments to meticulously gauge and regulate critical system variables. Automation within the industrial sector hinges upon deploying a Supervisory Control and Data Acquisition (SCADA) system. However, the software typically employed for this purpose is endowed with substantial added value, rendering its application in smaller‐scale projects economically impractical. In the context of this study, our primary objective was to develop a SCADA system tailored for a virtual plant. To realize this aim, we simulated a heat exchanger network process unit using UniSim®. We integrated it with the ScadaBR software through a Python script, capitalizing on the Modbus communication protocol. It encompasses essential functionalities such as real‐time variable supervision, dynamic graph and report generation. For the proposed example, 28 variables were monitored. The results revealed that statistical analysis of the variables could be performed graphically and computationally, evidencing that the ScadaBR tool was successfully connected to the Unisim® simulator.
Rita de Cassia Costa Dias and Lizandro de Sousa Santos
Elsevier BV
Isabela Barreto Correa, Matheus de Almeida Rodrigues da Silva, and Lizandro de Sousa Santos
Springer Science and Business Media LLC
Camila P. Pereira, Diego M. Prata, Lizandro S. Santos, and Luciane P. C. Monteiro
Springer Science and Business Media LLC
Paula Ciribeli Gonçalves, Luciane Pimentel Costa Monteiro, and Lizandro de Sousa Santos
Elsevier BV
Rita de Cassia Costa Dias, Michelle Leali Costa, Lizandro de Sousa Santos, and Ralf Schledjewski
Elsevier BV
Adan de Oliveira Alvarães, Diego Martinez Prata, and Lizandro de Sousa Santos
Elsevier BV
Patrick V. Mangili, Lizandro S. Santos, and Diego M. Prata
Elsevier BV
Patrick V. Mangili, Pedro G. Junqueira, Lizandro S. Santos, and Diego M. Prata
Springer Science and Business Media LLC
Mateus A. Gonçalves, Lizandro S. Santos, Fernando C. Peixoto, and Teodorico C. Ramalho
Wiley
Lizandro de Sousa Santos, Argimiro Resende Secchi, Diego Martinez Prata, and Evaristo Chalbaud Biscaia Jr.
Elsevier BV
Eros B. Vieira, Wesley F. Busch, Diego M. Prata, and Lizandro S. Santos
Wiley
The study of process control applied to chemical engineering problems can be significantly improved by the use of simulation packages. However, it has been noted that few works have been focusing on elucidation of the use of open source packages for academic projects on process control. In fact, there is few online discussion groups aimed to the application of Xcos® package for chemical engineering projects. Given this, this work aims to apply the Xcos® for studying the implementation of the process control theory applied to chemical engineering projects, focusing on the development of control loops block diagrams, PID control tuning, and process response analysis. The purpose of the application is developing a virtual environment for academic discussion and repository of examples. The results of two benchmark case studies are illustrated, showing that the problems can be easily modified, allowing the student to solve other similar examples for future applications. For the first case, the settling time ranged from 24.067 to 72.492 min, while for the second case the stabilization time ranged from 5.301 to 20.904 min.The results evidence that the Xcos® software can be widely applied by the academic community, due to its simplicity and robustness in demonstrating the principal aspects of control theory.
Rita de Cassia Costa Dias, Lizandro de Sousa Santos, Hacène Ouzia, and Ralf Schledjewski
Elsevier BV
Pedro G. Junqueira, Patrick V. Mangili, Rafael O. Santos, Lizandro S. Santos, and Diego M. Prata
Elsevier BV
Rafael Oliveira dos Santos, Lizandro de Sousa Santos, and Diego Martinez Prata
Elsevier BV
Lizandro de Sousa Santos, Kaio Magno Ferreira de Souza, Marina Ribeiro Bandeira, Víctor Rolando Ruiz Ahón, Fernando Cunha Peixoto, and Diego Martinez Prata
Elsevier BV
Camila P. Pereira, Diego M. Prata, Lizandro de S. Santos, and Luciane P. C. Monteiro
FapUNIFESP (SciELO)
In the last decades companies aligned with the concepts and principles of sustainable development have been seeking to minimize the environmental and social impacts caused by their operations. Typically, the primary environmental concerns in the industry were related to water consumption, wastewater production, waste generation, energy consumption and mainly CO2 emission which is one of the causes of the greenhouse effect. However, the environmental eco-efficiency is not clearly seen when the evaluations of these eco-indicators are individually used and, therefore, it becomes necessary to implement a methodology that enables a joint assessment involving various aspects. In this paper we have developed an environmental index, called Eco-efficiency Comparison Index (ECI), applied to evaluate in real time a petrochemical facility. Throughout a study-case based on experimental data, the results have evidenced that the ECI is a useful tool for eco-efficiency analysis for process monitoring.
Patrick V. Mangili, Yuri P.D.M. Souza, Diego Q.F. de Menezes, Lizandro S. Santos, and Diego M. Prata
Elsevier BV
Mateus A. Gonçalves, Lizandro S. Santos, Fernando C. Peixoto, Elaine F. F. da Cunha, Telles C. Silva, and Teodorico C. Ramalho
Wiley
F. C. L. Oliveira, W. P. Martignoni, E. Souza, L.G. Pereira, L.S. Santos, D.M. Prata, and L.P.C. Monteiro
FapUNIFESP (SciELO)
Selective non-catalytic reduction (SNCR) has become an important technique for reducing NOx emissions in industrial furnaces. The occurrence of convective recirculation can cause significant changes in SNCR performance. This paper presents the results of a study performed by Computational Fluid Dynamics (CFD) considering: (i) changes of initial NOX; (ii) injection plan and (iii) NH3/NO molar ratio. The simulations have demonstrated that the convective recirculation (resultant from different injection plans and high temperature gradients) of flue gas assumes a role of vital importance for performance analysis of existing plants and the potential NOX reduction in furnaces during the design phase.
Mateus A. Gonçalves, Lizandro S. Santos, Diego M. Prata, Fernando C. Peixoto, Elaine F. F. da Cunha, and Teodorico C. Ramalho
Springer Science and Business Media LLC