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.
| Original language | English |
|---|---|
| Article number | 012076 |
| Journal | Journal of Physics: Conference Series |
| Volume | 1128 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 7 Dec 2018 |
| Event | 3rd All-Russian Scientific Conference Thermophysics and Physical Hydrodynamics with the School for Young Scientists, TPH 2018 - Yalta, Crimea, Ukraine Duration: 10 Sep 2018 → 16 Sep 2018 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
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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.Research output: Contribution to journal › Conference article
}
TY - JOUR
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.
PY - 2018/12/7
Y1 - 2018/12/7
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.
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U2 - 10.1088/1742-6596/1128/1/012076
DO - 10.1088/1742-6596/1128/1/012076
M3 - Conference article
VL - 1128
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
IS - 1
M1 - 012076
ER -