Comparison of differential and integral methods for coal oxidation kinetic analysis
K. V. Slyusarskiy, V. E. Gubin, D. V. Gvozdyakov, A. A. Tolokolnikov
The Butakov Research Center
The influence of two different methods of kinetic analysis on obtained values of kinetic constants of coal oxidation process was studied. The oxidation of T-grade bituminous coal of Kuznetskiy deposit and 2B-grade lignite of Borodinskoe deposit was investigated by means of thermogravimetric analysis. All measurements were carried out with heating rates 2,5, 10, 25 and 40 K/min in temperature range 300-1100 K in air medium. The dependences of activation energy and frequency factor on conversion were obtained using two isoconversional methods: differential method of Freidman and integral method of Kissinger-Akahira-Sunose. The average values of activation energy which were obtained by KAS method were higher by 14.5 % for bituminous coal and 23.3 % for lignite in comparison with values obtained by Freidman method. The same relations were observed for frequency factor values.
Journal of Physics: Conference Series
https://doi.org/10.1088/1742-6596/1128/1/012076
3rd All-Russian Scientific Conference Thermophysics and Physical Hydrodynamics with the School for Young Scientists, TPH 2018 - Yalta, Crimea, Ukraine
activation energy
Slyusarskiy, K. V., Gubin, V. E., Gvozdyakov, D. V., & Tolokolnikov, A. A. (2018). Comparison of differential and integral methods for coal oxidation kinetic analysis. Journal of Physics: Conference Series, 1128(1), [012076]. https://doi.org/10.1088/1742-6596/1128/1/012076
Comparison of differential and integral methods for coal oxidation kinetic analysis. / Slyusarskiy, K. V.; Gubin, V. E.; Gvozdyakov, D. V.; Tolokolnikov, A. A.
In: Journal of Physics: Conference Series, Vol. 1128, No. 1, 012076, 07.12.2018.
Slyusarskiy, KV, Gubin, VE, Gvozdyakov, DV & Tolokolnikov, AA 2018, 'Comparison of differential and integral methods for coal oxidation kinetic analysis', Journal of Physics: Conference Series, vol. 1128, no. 1, 012076. https://doi.org/10.1088/1742-6596/1128/1/012076
Slyusarskiy KV, Gubin VE, Gvozdyakov DV, Tolokolnikov AA. Comparison of differential and integral methods for coal oxidation kinetic analysis. Journal of Physics: Conference Series. 2018 Dec 7;1128(1). 012076. https://doi.org/10.1088/1742-6596/1128/1/012076
Slyusarskiy, K. V. ; Gubin, V. E. ; Gvozdyakov, D. V. ; Tolokolnikov, A. A. / Comparison of differential and integral methods for coal oxidation kinetic analysis. In: Journal of Physics: Conference Series. 2018 ; Vol. 1128, No. 1.
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title = "Comparison of differential and integral methods for coal oxidation kinetic analysis",
abstract = "The influence of two different methods of kinetic analysis on obtained values of kinetic constants of coal oxidation process was studied. The oxidation of T-grade bituminous coal of Kuznetskiy deposit and 2B-grade lignite of Borodinskoe deposit was investigated by means of thermogravimetric analysis. All measurements were carried out with heating rates 2,5, 10, 25 and 40 K/min in temperature range 300-1100 K in air medium. The dependences of activation energy and frequency factor on conversion were obtained using two isoconversional methods: differential method of Freidman and integral method of Kissinger-Akahira-Sunose. The average values of activation energy which were obtained by KAS method were higher by 14.5 {\%} for bituminous coal and 23.3 {\%} for lignite in comparison with values obtained by Freidman method. The same relations were observed for frequency factor values.",
author = "Slyusarskiy, {K. V.} and Gubin, {V. E.} and Gvozdyakov, {D. V.} and Tolokolnikov, {A. A.}",
doi = "10.1088/1742-6596/1128/1/012076",
journal = "Journal of Physics: Conference Series",
T1 - Comparison of differential and integral methods for coal oxidation kinetic analysis
AU - Slyusarskiy, K. V.
AU - Gubin, V. E.
AU - Gvozdyakov, D. V.
AU - Tolokolnikov, A. A.
N2 - The influence of two different methods of kinetic analysis on obtained values of kinetic constants of coal oxidation process was studied. The oxidation of T-grade bituminous coal of Kuznetskiy deposit and 2B-grade lignite of Borodinskoe deposit was investigated by means of thermogravimetric analysis. All measurements were carried out with heating rates 2,5, 10, 25 and 40 K/min in temperature range 300-1100 K in air medium. The dependences of activation energy and frequency factor on conversion were obtained using two isoconversional methods: differential method of Freidman and integral method of Kissinger-Akahira-Sunose. The average values of activation energy which were obtained by KAS method were higher by 14.5 % for bituminous coal and 23.3 % for lignite in comparison with values obtained by Freidman method. The same relations were observed for frequency factor values.
AB - The influence of two different methods of kinetic analysis on obtained values of kinetic constants of coal oxidation process was studied. The oxidation of T-grade bituminous coal of Kuznetskiy deposit and 2B-grade lignite of Borodinskoe deposit was investigated by means of thermogravimetric analysis. All measurements were carried out with heating rates 2,5, 10, 25 and 40 K/min in temperature range 300-1100 K in air medium. The dependences of activation energy and frequency factor on conversion were obtained using two isoconversional methods: differential method of Freidman and integral method of Kissinger-Akahira-Sunose. The average values of activation energy which were obtained by KAS method were higher by 14.5 % for bituminous coal and 23.3 % for lignite in comparison with values obtained by Freidman method. The same relations were observed for frequency factor values.
U2 - 10.1088/1742-6596/1128/1/012076
DO - 10.1088/1742-6596/1128/1/012076
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
10.1088/1742-6596/1128/1/012076