Kinetic analysis of the termal decomposition of colombian vacuum residua by termogravimetry
Five different Colombian vacuum residues were thermally decomposed in a thermogravimetric analyzer. Three heating rates were employed to heat the sample up to 650°C. The kinetic analysis was performed by the Coats-Redfern method to describe the non-isothermal pyrolysis of the residua, a reaction mod...
| Autores: | , , , , , |
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| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | Colombia |
| Recursos: | Universidad Nacional de Colombia |
| Repositorio: | Repositorio UN |
| Idioma: | español |
| OAI Identifier: | oai:repositorio.unal.edu.co:unal/67642 |
| Acesso em linha: | https://repositorio.unal.edu.co/handle/unal/67642 http://bdigital.unal.edu.co/68671/ |
| Access Level: | acceso abierto |
| Palavra-chave: | 62 Ingeniería y operaciones afines / Engineering TGA pyrolysis distillables coke coking asphaltenes. Balanza termogravimétrica termogravimetría pirólisis destilables coque asfaltenos coquización. |
| Resumo: | Five different Colombian vacuum residues were thermally decomposed in a thermogravimetric analyzer. Three heating rates were employed to heat the sample up to 650°C. The kinetic analysis was performed by the Coats-Redfern method to describe the non-isothermal pyrolysis of the residua, a reaction model where the reaction order gradually increases from first to second order is proposed and an excellent agreement of the experimental with the calculated data is presented. The results also indicate that the pyrolysis of a vacuum residue cannot be modeled by a single reaction mechanism. |
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