Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Mathematical modeling of hydrogen production from metallic aluminum in pilot scale reactor
Submission Author:
Dhyogo Miléo Taher , PR
Co-Authors:
Dhyogo Miléo Taher, Wellington Balmant, Matheus Ben-Hur Ramirez Sapucaia, Lauber Martins, Nadia Edwin, Stephan Hennings Och, Diogo B. Pitz, Lucio Cardozo-Filho, André Bellin Mariano, JOSÉ VIRIATO COELHO VARGAS
Presenter: Dhyogo Miléo Taher
doi://10.26678/ABCM.COBEM2023.COB2023-0291
Abstract
Fossil fuels are still the most used energy sources in the world, however many energy alternatives have been proposed to replace these fuels. As is common knowledge, these fuels contribute to the increase in the greenhouse effect and have their main sources in countries with great political instability, which makes the price of these derivatives very volatile. Among the fuels that can replace fossil fuels, hydrogen stands out. This fuel generates zero pollution, as its burning generates only water, not contributing to the generation of greenhouse gases and other pollutants. In addition, hydrogen can be used in fuel cells where efficiency can reach up to 70%. However, obtaining hydrogen is still economically unfeasible, as it requires electrolysis of water, a process that uses a lot of energy, or reforming of hydrocarbons that requires water vapor and generates greenhouse gases. In this context, hydrogen generation from metallic aluminum arises, where it does not require energy to generate hydrogen. In this hydrogen generation system, metallic aluminum reacts with sodium hydroxide and water to form sodium aluminate and hydrogen gas. Unlike other technologies, there is no need to add energy to the system as this reaction is highly exothermic, releasing a large amount of heat. However, this technology is still in its infancy and there is no commercial plant for generating hydrogen with this process. Thus, the objective of this work is to propose a mathematical model for the generation of hydrogen from metallic aluminum in pilot scale reactor. The model consisted of energy and mass conservation equations. The mathematical model was experimental validated in pilot scale 18 liters reactor. At the end of the work it is expected to obtain a model that can be used to design and optimize hydrogen generation systems from metallic aluminum in pilot scale reactors.
Keywords
Hydrogen, pilot scale reactor, chemical kinetics, math model, aluminum
