Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
STUDY OF METHODOLOGIES FOR DETERMINING HIGHER AND LOWER HEATING VALUE THROUGH PROXIMATE ANALYSIS OF EUTERPE OLERACEA
Submission Author:
Gabriel Willian Moreira Bezerra , PA , Brazil
Co-Authors:
Gabriel Willian Moreira Bezerra, Luiz Felipe da Silva Ferreira, Ana Paula Mattos, Fernando Henrique de Barbosa dos Santos, Alan Carneiro, João Víctor Ribeiro Moreira
Presenter: Luiz Felipe da Silva Ferreira
doi://10.26678/ABCM.COBEM2023.COB2023-1019
Abstract
In the study of the combustion of new biofuels or residues with energy potential it is of utmost importance to study the physical-chemical properties to predict the combustion phenomenon and estimate the energy produced. Some analyses are extremely necessary to study combustion, such as: proximate analysis, ultimate analysis, thermogravimetric analysis, and obtaining the higher heating value (HHV) and lower heating value (LHV). The Euterpe Oleracea stone is an abundant residue in the state of Pará, about 80% of the mass of the fruit is the stone. About 16 tons are produced daily in the metropolitan region of Belém. The LHV of the açai stone is comparable to the mineral coal of Santa Catarina, and is higher than that of sugar cane bagasse with 20% humidity. However, there are no reports on the influence of moisture in the stone, and how this affects the LHV and volatile content. Recent studies are focused on energy generation from waste, Brazil is a pioneer in the use of renewable energy, with about 84.8% of the domestic supply of electricity comes from clean sources, among this figure biomass represents 9.1% of this matrix, being the second largest source, only behind hydropower. Research to develop technologies for the use of waste is growing, aiming a greater generation of decentralized energy and a greater use of biomass in the boilers of large industries, which can generate carbon credits, reduction in the use of coal, decrease in emissions of pollutants and greenhouse gases (GHG). This work aims to study the effects of moisture in the stone of açai in the immediate analysis and predict by empirical equations to determine the HHV and LHV of samples with different drying times, in order to analyze the moisture contained in the stone. It is possible to evaluate and predict the ideal time and temperature for drying the stone to have the highest possible LHV and the highest number of volatiles. A comparison of the value of HHV and LHV will be performed with the literature. The use of the açai seed in a boiler adds value to the waste and contributes to its management and treatment, besides the fact that the burning generates green CO2, unlike mineral coal.
Keywords
Euterpe Oleracea, proximate analysis, HHV, LHV, Biomass
