Kinetic analysis using thermogravimetric analysis for nonisothermal pyrolysis of vacuum residue

Sangcheol Shin, Soo Ik Im, Nam Sun Nho, Ki Bong Lee

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Pyrolysis is a relatively simple upgrading process that can produce light oil from unconventional oil and heavy residue. For effective utilization of pyrolysis processes, it is important to understand its kinetic parameters. In this study, the nonisothermal pyrolysis of vacuum residue (VR) was analyzed using a thermogravimetric analyzer and the activation energy of the VR pyrolysis reaction was estimated by several theoretical methods. It was found that isoconversional methods were more suitable than nonisoconversional methods for analyzing complex pyrolysis reaction of VR. The Friedman method, a differential isoconversional method, is thought to be the most appropriate among the various methods tested because it can describe the complexity of the pyrolysis reaction of VR and there is no need for information of exact reaction model and mathematical assumptions for temperature integral, which can raise systematic errors in the kinetic analysis. Finally, the kinetic parameters of VR pyrolysis were determined based on the results of Friedman analysis and distributed activation energy model (DAEM), and VR pyrolysis behavior was well expressed with the kinetic parameters obtained from DAEM analysis.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalJournal of Thermal Analysis and Calorimetry
DOIs
Publication statusAccepted/In press - 2016 Jun 18

Fingerprint

pyrolysis
Thermogravimetric analysis
Pyrolysis
Vacuum
vacuum
Kinetics
kinetics
Kinetic parameters
Activation energy
activation energy
Oils
oils
upgrading
Systematic errors
systematic errors
analyzers

Keywords

  • Activation energy
  • Distributed activation energy model
  • Kinetic analysis
  • Pyrolysis
  • Thermogravimetric analysis
  • Vacuum residue

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Condensed Matter Physics

Cite this

Kinetic analysis using thermogravimetric analysis for nonisothermal pyrolysis of vacuum residue. / Shin, Sangcheol; Im, Soo Ik; Nho, Nam Sun; Lee, Ki Bong.

In: Journal of Thermal Analysis and Calorimetry, 18.06.2016, p. 1-9.

Research output: Contribution to journalArticle

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