Pyrolysis analysis and kinetics of crude oils

KÖK M. V., Karacan O.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, vol.52, no.3, pp.781-788, 1998 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 52 Issue: 3
  • Publication Date: 1998
  • Doi Number: 10.1023/a:1010114624345
  • Journal Name: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.781-788
  • Keywords: crude oil, differential scanning calorimetry, kinetics, pyrolysis, thermal analysis, thermogravimetry, THERMAL-CRACKING, COMBUSTION
  • Middle East Technical University Affiliated: Yes

Abstract

This research presents the results of an experimental study on the determination of pyrolysis behaviour and kinetics of six crude oils by differential scanning calorimetry (DSC) and thermogravimetry (TG/DTG). Crude oil pyrolysis indicated two main temperature ranges where loss of mass was observed. The first region between ambient to 400 degrees C was distillation. The second region between 400 and 600 degrees C was visbreaking and thermal cracking. Arrhenius-type kinetic model is used to determine the kinetic parameters of crude oils studied. It was observed that as crude oils gets heavier (degrees API decreases) cracking activation energy increases. Activation energy of cracking also show a general trend with asphaltene content.