Characterization of medium and heavy crude oils using thermal analysis techniques

Kok M. V.

FUEL PROCESSING TECHNOLOGY, vol.92, no.5, pp.1026-1031, 2011 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 92 Issue: 5
  • Publication Date: 2011
  • Doi Number: 10.1016/j.fuproc.2010.12.027
  • Journal Name: FUEL PROCESSING TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1026-1031
  • Keywords: Crude oil, Limestone, Combustion, Thermogravimetry, Differential scanning calorimeter, Kinetics, THERMOGRAVIMETRIC ANALYSIS, COMBUSTION KINETICS, PYROLYSIS, ASPHALTENES, BEHAVIOR, TEMPERATURE, FRACTIONS, FOSTERTON
  • Middle East Technical University Affiliated: Yes

Abstract

This study focused on the characterization of heavy and medium grade crude oils in limestone matrix using differential scanning calorimeter (DSC) and thermogravimetry (TG-DTG). DSC and TG-DTG curves produced for two different crude oils + limestone mixtures indicate that the crude oil undergoes two major transitions when subjected to an oxidizing and constant rate environment known as low- and high-temperature oxidation. Kinetic analysis in the low- and high-temperature oxidation regions were performed using two different kinetic methods. Throughout the study. it was observed that the activation energy values of the samples are varied between 2.40-10.62 and 42.3-181.9 kJ/mol in low- and high-temperature oxidation regions respectively. (C) 2011 Elsevier B.V. All rights reserved.