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Title: Comparison of differential and integral methods for coal oxidation kinetic analysis
Authors: Slusarskiy (Slyusarsky), Konstantin Vitalievich
Gubin, Vladimir Evgenievich
Gvozdyakov, Dmitry Vasilievich
Tolokolnikov, Anton Andreevich
Keywords: кинетический анализ; дифференциальные методы; интегральные методы; уголь
Issue Date: 2018
Publisher: IOP Publishing
Citation: Comparison of differential and integral methods for coal oxidation kinetic analysis / K. V. Slusarskiy (Slyusarsky) [et al.] // Journal of Physics: Conference Series. — 2018. — Vol. 1128 : Thermophysics and Physical Hydrodynamics : 3rd All-Russian Scientific Conference with the School for Young Scientists, 10–16 September 2018, Yalta, Crimea : [proceedings]. — [012076, 7 p.].
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.
Appears in Collections:Материалы конференций

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