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ENCIT 2020
18th Brazilian Congress of Thermal Sciences and Engineering
Numerical Simulation of Açaí Seed and Municipal Solid Waste Downdraft Co-Gasification
Submission Author:
Caroline Lewin , RJ
Co-Authors:
Caroline Lewin, Florian Alain Yannick Pradelle, ANA ROSA MARTINS
Presenter: Caroline Lewin
doi://10.26678/ABCM.ENCIT2020.CIT20-0194
Abstract
The purpose of this study was to simulate the downdraft co-gasification of açaí seed and municipal solid waste. The choice of biomasses highlights the “Waste to Energy concept”, investigating the potential for energy generation of an important Brazilian agro-industrial residue and the waste produced by urban activities. A previously developed kinetic model was employed, taking into account the effects of moisture evaporation, pyrolysis, combustion and gasification chemical reactions. A central composite design of experiments using the co-gasification ratio and the equivalence ratio as factors was performed, and some statistical analyses were carried out. Polynomial models were developed for the sum of CO and H2 molar fractions, the lower heating value of the syngas and the energy efficiency. The optimized condition corresponded to the gasification of açaí seed alone with an equivalence ratio of 0.18, and produced a syngas with a sum of CO and H2 of 45.5%, a lower heating value of 5.98 MJ/kg and an energy efficiency of 32.2%. These results were used for comparison to other conditions, such as the gasification of sugarcane bagasse, and the co-gasification of 40% municipal solid waste with both açaí seed and bagasse and 0.15 equivalence ratio.
Keywords
Gasification, Açaí seed, Municipal solid waste, Kinetic modelling
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