Isoconversional methods to determine the kinetics of crude oils - thermogravimetry approach

KÖK M. V., Varfolomeev M. A., Nurgaliev D. K.

JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING, cilt.167, ss.480-485, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 167
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.petrol.2018.04.040
  • Dergi Adı: JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.480-485
  • Anahtar Kelimeler: Crude oil, Kinetics, Thermogravimetry, Iso-conversional method, Activation energy, THERMAL-BEHAVIOR, COMBUSTION, REGIONS, TG, PYROLYSIS, LIMESTONE, CLAY
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

In this research, kinetics of four crude oils from different origins are determined by iso-conversional methods using thermogravimetry data (TGA-DTG). The experiments were performed at three different heating rates (5-10-15 K/min) between 300 and 1200 K. Thermal characteristics of the crude oil samples such as, reaction intervals and corresponding peak and burn-out temperatures are also determined. Three different iso-conversional methods, known as Starink, Kissinger and Friedman are used in order to determine the activation energy values of the crude oil samples studied that represents the novelty of the research. Activation energy values of the crude oil samples are varied between 50 and 102 kJ/mol and 69-132 kJ/mol in low temperature oxidation region and high temperature oxidation region, respectively.