Simulação e análise da influência dos parâmetros do processo de obtenção do gás de síntese utilizando o software Aspen Hysys

Abstract

With the intention of creating new possibilities for generating energy from renewable sources, hydrogen has been studied as an option, as it has sources of production from pollutants, high calorific value and is a clean fuel. In order to contribute scientifically to the understanding of methane reform reactions, an analysis of the influence of the reaction parameters was carried out. The process was studied through computational experiments with the support of the Aspen Hysys and Excel software, based on the minimization of Gibbs free energy in equilibrium. The parameters studied were: molar ratio of reagents (1-5), temperature (600-1000 °C) and pressure (1-5 bar) using the literature as a basis. In the development of the process, dry methane reform units, steam methane reform units and both units using Biogas as the methane source were simulated. The plant was built in the simulator and the results obtained indicate that high values in the molar proportion of CO2/CH4, CO2/Biogas, H2O/CH4 and H2O/Biogas, high temperatures and low pressures favor the maximum conversion of methane. The use of biogas to replace pure methane in the methane reform process has shown great potential, given the need to add value to a waste and its conditions to favor the reaction of synthesis gas production. Through this study, it was possible to obtain thermodynamic parameters that can facilitate the optimization of operations to obtain syngas gas.