Navegando por Autor "MATIAUDA, Mario"

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    Fluidized bed combustion of sawdust pellets
    (INSTITUTO DE TECNOLOGIA, 2015) MATIAUDA, Mario; BENÍTEZ, Juan B. de León; FREAZA, Nora; RIVERO, Marta.; Jandecy Cabral Leite
    The study investigates the combustion of sawdust pellets in a fluidized bed, aiming at the energy recovery of solid waste in bioethanol production. Samples of pine and palo blanco were analyzed, focusing on the devolatilization stage and primary fragmentation. Results showed significant differences in thermal behavior and fragmentation between the species, with pine exhibiting less fragmentation and more consistent residues. The theoretical model used predicted devolatilization times, validated experimentally, highlighting the influence of bed temperature and particle diameter.
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    Isothermic Gasification Octave: Gasificação isotérmica modelada e simulada com Octave
    (INSTITUTO DE TECNOLOGIA, 2015) MATIAUDA, Mario; DE LEÓN BENÍTEZ, Juan B.; ARTEAGA, Luis Ernesto; FREAZA, Nora; RIVERO, Marta; YACHECEN, Carlos; Manoel Henrique Reis Nascimento, Dr.
    Gasification is a thermal conversion process where solid biomass (sawdust pellets) turns into gas by partial oxidation at high temperatures. The model is based on the two-phase theory (bubble-emulsion), suitable for predicting experimental results in fluidized bed reactions. It includes mass and energy balances, and hydrodynamic studies. The simulation is implemented in Octave with a graphical user interface, enabling predictions of the distribution and concentrations of gas species during the process.