Thermoanalytical characterization of Aleksinac (Yugoslavia) oil shale kerogen

Vũcelić, D.; Krsmanović, V.D.; Vučelić, V.; Kićanović, M.; Vitorović, D.

doi:10.1007/bf01913643

Cited by 4 publications

(2 citation statements)

References 3 publications

(5 reference statements)

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“…Non-isothermal kinetic study of weight loss under the combustion process is extremely complex for a mixture of OS and semicoke because of the presence of numerous complicated components and parallel and consecutive reactions taking place [12][13][14][15]. In this research, binary linear regression method based on Arrhenius kinetic theory was used for kinetic analysis of the data obtained in the TG/DTG experiments.…”

Section: Combustion Reaction Kineticsmentioning

confidence: 99%

Study on Combustion Characteristics of Mixtures of Huadian Oil Shale and Semicoke

Bai¹,

Sun²,

Sun³

et al. 2007

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In this research, thermal analysis and combustion characteristics of mixtures of oil shale and its semicoke were investigated by means of an on-line TG-FTIR interconnection analyzer, with the aim of comparing the behavior of the mixture with that of its components. Experiments were conducted at three heating rates 20, 50 and 80 K/min in the temperature range 30-850 °C. Mainly three different reaction regions were observed at combustion of most of the samples studied. It was observed that ignition temperature decreases with an increase in the share of oil shale in the blend resulting in a higher yield of volatile compounds. Higher heating rates were accompanied by higher reaction temperatures and heat of reactions. Distinguishing peaks shifted to higher temperatures with an increase in heating rate. A Fourier Transform Infrared Radiation analyser (FTIR) was used to analyze combustion products during experiments. Kinetic parameters of the combustion reaction of mixtures were calculated by binary linear regression. Throughout the analysis of kinetics of the combustion experiments, it was observed that activation energies of combustion in the high-temperature region were generally higher than those of low-temperature region (67.2-48.9 KJ/mol), and this could be explained by the difference in the combustion reaction mechanism at different temperatures. The results may provide theoretical basis for further effective and economical exploitation of oil shale.

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Section: Combustion Reaction Kineticsmentioning

confidence: 99%

Study on Combustion Characteristics of Mixtures of Huadian Oil Shale and Semicoke

Bai¹,

Sun²,

Sun³

et al. 2007

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“…Thermal characteristics and kinetic parameters of OS combustion have been extensively studied by isothermal and non-isothermal thermogravimetry [6][7][8][9][10], but few studies of semicoke combustion have been reported. Võssotskaja and Urov [11] developed an aluminium retort heated electrically to study the effect of kaolinite on thermal decomposition of kukersite oil shale using model mixtures.…”

Section: Introductionmentioning

confidence: 99%

Influence of Retorting Temperature on Combustion Characteristics and Kinetic Parameters of Oil Shale Semicoke

Qing¹,

Baizhong²,

Xiahua³

et al. 2006

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In this research three Jilin Huadian semicoke samples (SC-1, SC-2 and SC-3) were obtained from a retorting experimental rig setup under different retorting temperatures. A series of experiments accompanied by scanning electron microscope (SEM) analysis were carried out to study devolatilization of organic matter of oil shale and transformation of the structure of semicoke during the retorting process. It was also sought to provide theoretical foundation for the retorting process. Combustion characteristics of Huadian oil shale semicoke were studied using the Pyris1 TGA thermogravimetric analyzer (PE/USA) at different final temperatures and at certain heating rates. Kinetic parameters of semicoke combustion were determined by the Coats/Redfern method and the optimal combustion temperature was established. This information is necessary to further effective exploitation and economical application of oil shale semicoke.

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Kerogen as a geochemical marker of the thermal history of rocks

Cebulak

Karczewska

Mazurek

et al. 1997

Journal of Thermal Analysis

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The study presents examples of the application of oxyreactive thermal analysis to the geological prospecting of bitumen deposits. Thermal analysis performed under properly chosen analytical conditions allows determination of characteristic features of organic matter and, at the same time, estimation of the thermal history of rocks. Thermal oxyreactivity curves document whether rocks were heated before or not. The results of the oxyreactive thermal analysis correlate well with the results of routine chemical analyses of organic matter (e.g. the composition of kerogen and bituminous fraction, Rock-Eval analysis and others). Our study clearly demonstrates that the composition of organic matter in facially, lithostratigraphically, and biogenetically identical rocks depends on their thermal history.

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Thermoanalytical characterization of Aleksinac (Yugoslavia) oil shale kerogen

Cited by 4 publications

References 3 publications

Study on Combustion Characteristics of Mixtures of Huadian Oil Shale and Semicoke

Study on Combustion Characteristics of Mixtures of Huadian Oil Shale and Semicoke

Influence of Retorting Temperature on Combustion Characteristics and Kinetic Parameters of Oil Shale Semicoke

Kerogen as a geochemical marker of the thermal history of rocks

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