v. 37 n. 3 (2024): Revista ION
Artigos

Projeto e implementação de um sistema de pirólise catalítica de poliestireno expandido

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  • Julieth García Sánchez,
  • Lizeth Alejandra Arenas Aguilar,
  • Lizeth Dayana Cendales Sánchez,
  • Víctor Gabriel Baldovino Medrano
Julieth García Sánchez
Centro de Investigaciones en Catálisis (CICAT) y Laboratorio de Ciencia de Superficies (SurfLab)
Lizeth Alejandra Arenas Aguilar
Centro de Investigaciones en Catálisis (CICAT)
Lizeth Dayana Cendales Sánchez
Centro de Investigaciones en Catálisis (CICAT)
Víctor Gabriel Baldovino Medrano
Centro de Investigaciones en Catálisis (CICAT) y Laboratorio de Ciencia de Superficies (SurfLab)
Resumo gráfico
DOI: https://doi.org/10.18273/revion.v37n3-2024005

Publicado 2024-12-09

Palavras-chave

  • Poliestireno expandido,
  • Pirólise catalítica,
  • Estireno,
  • Catalisador FCC

Como Citar

García Sánchez, J., Arenas Aguilar, L. A., Cendales Sánchez, L. D. ., & Baldovino Medrano, V. G. . (2024). Projeto e implementação de um sistema de pirólise catalítica de poliestireno expandido. REVISTA ION, 37(3), 57–71. https://doi.org/10.18273/revion.v37n3-2024005

Copyright (c) 2024 Julieth García Sánchez, Lizeth Alejandra Arenas Aguilar, Lizeth Dayana Cendales Sánchez, Víctor Gabriel Baldovino Medrano

Creative Commons License
Este trabalho está licenciado sob uma licença Creative Commons Attribution-NoDerivatives 4.0 International License.

Resumo

Esta pesquisa teve como objetivo projetar e colocar em operação um reator semicontinuo de aço inoxidável 316 para o aproveitamento de poliestireno expandido na obtenção de estireno por pirólise catalítica. Um reator de 1335 cm3 foi construído, composto por um recipiente tubular com saída lateral de vapores, um forno de aquecimento, um condensador tipo serpentina e um rotâmetro para a alimentação de um gás de arrastre (N2). Um catalisador industrial de craqueamento catalítico fluidizado foi utilizado para o processo. A metodologia desenvolvida para a realização dos testes catalíticos destaca-se por: (i) a mistura do catalisador com o poliestireno por meio de moagem mecânica; (ii) a determinação dos perfis de temperatura do reator e a comparação do comportamento do catalisador com o observado em sua ausência. A eficiência do processo foi avaliada em termos de rendimento de estireno e pureza do produto líquido. Finalmente, as melhores condições de operação foram determinadas por meio de um delineamento fatorial 32, utilizando como variáveis ​​de entrada a temperatura (360 °C, 430 °C e 500 °C) e a altura do leito (4, 6 e 8 cm). Foi determinado que as variáveis ​​afetam a pureza do líquido e o rendimento de estireno de forma semelhante, mas que o efeito gerado depende da interação entre as duas variáveis ​​estudadas. As melhores condições de operação do reator obtidas a partir do delineamento experimental foram 430 °C e 4 cm de leito, obtendo-se um rendimento de 0,74 g de estireno/g de poliestireno expandido e 89 % de pureza.

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