Nombre: RENATA FALQUETO LOUVEM
Fecha de publicación: 24/02/2025
Junta de examinadores:
Nombre |
Rol |
|---|---|
| DANIEL DA CUNHA RIBEIRO | Coorientador |
| KÁSSIA GRACIELE DOS SANTOS | Examinador Externo |
| MARCELO SILVEIRA BACELOS | Presidente |
| RENATO DO NASCIMENTO SIQUEIRA | Examinador Externo |
Resumen: Pyrolysis in spouted bed reactors with mixtures of polyethylene/aluminum composite particles (LDPE/Al) and sand promotes the waste valorization route for fuel production. However, unstable regimes caused by mixtures of particles with different sizes and
specific masses can compromise thermal conversion in the reactor. To contribute to the carton waste management route, this work aims to validate gas-solid flow model in beds composed of sand and composite mixtures through experimental data from the literature. The 2D Euler-Euler granular model is tested with particle mixtures at 30% and 50% composite concentrations and diameter ratios of 1.39 and 2.54. The simulation can predict stable conditions and segregation levels of Mantegazini et al.
(2021) and is consistent with experimental data on glass spheres reported by San José et al. (1994). The model can determine the mixing index (Im) of the bed in spouting and collapse regimes with an error of less than 10%. The results indicated that ecreasing
the diameter ratio and composite concentration in the bed promotes more homogeneous mixtures with Im values close to 1. This research contributes to the fuel production route, in addition to enhancing the valorization and management of solid
carton-based waste.
