Temperature-controlled combustion and kinetics of different rank coal samples

KÖK M. V.

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, vol.79, no.1, pp.175-180, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 79 Issue: 1
  • Publication Date: 2005
  • Doi Number: 10.1007/s10973-004-0581-6
  • Journal Name: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.175-180
  • Keywords: coal, differential scanning calorimetry, lignite, reaction kinetics, thermal analysis, thermogravimetry, THERMAL-ANALYSIS, REACTIVITY, OXIDATION, LIGNITES, CHAR
  • Middle East Technical University Affiliated: Yes

Abstract

Differential scanning calorimetry (DSC) and thermogravimetry (TG/DTG) has been used to obtain information on the temperature-controlled combustion characteristics of seventeen coals of different origin from Thrace basin of Turkey. Experiments were performed in air atmosphere up to 600degreesC at a heating rate of 10degrees min(-1). The DSC/TG curves clearly demonstrate distinct transitional stages in the entire coal samples studied. Reaction intervals, peak and burn-out temperatures of the coal samples are also determined. Two different kinetic methods known as, Arrhenius and Coats-Redfern, were used to analyze the kinetic data and the results are discussed.