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Kinetic analysis of the termal decomposition of colombian vacuum residua by termogravimetry
Análisis cinético de la descomposición térmica de fondos de vacío colombianos mediante termogravimetría
DOI:
https://doi.org/10.15446/ing.investig.v35n3.49498Keywords:
TGA, pyrolysis, distillables, coke, coking, asphaltenes. (en)Balanza termogravimétrica, termogravimetría, pirólisis, destilables, coque, asfaltenos, coquización. (es)
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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Copyright (c) 2015 Fabian Andrey Diaz Mateus, Arlex Chaves, Maria Paola Maradei, David Alfredo Fuentes, Alexander Guzman, Hector Julio Picon
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