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 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.

• Autores: Diaz Mateus, Fabian Andrey; Chaves, Arlex; Maradei, Maria Paola; Fuentes, David Alfredo; Guzman, Alexander; Picon, Hector Julio
• Tipo de recurso: Article of journal
• Fecha de publicación: 2015
• Institución: Universidad Nacional de Colombia
• Repositorio: Universidad Nacional de Colombia
• Idioma: spa
• OAI Identifier: oai:repositorio.unal.edu.co:unal/67642
• Acceso en línea: https://repositorio.unal.edu.co/handle/unal/67642; http://bdigital.unal.edu.co/68671/
• Palabra clave: 62 Ingeniería y operaciones afines / Engineering; TGA; pyrolysis; distillables; coke; coking; asphaltenes.; Balanza termogravimétrica; termogravimetría; pirólisis; destilables; coque; asfaltenos; coquización.
• Rights: openAccess
• License: Atribución-NoComercial 4.0 Internacional