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.

Original language	English
Article number	012076
Journal	Journal of Physics: Conference Series
Volume	1128
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/1128/1/012076
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

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1088/1742-6596/1128/1/012076

Fingerprint Dive into the research topics of 'Comparison of differential and integral methods for coal oxidation kinetic analysis'. Together they form a unique fingerprint.

Cite this

@article{332835c906014e90b2583d17ed328d38,

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.}",

year = "2018",

month = dec,

day = "7",

doi = "10.1088/1742-6596/1128/1/012076",

language = "English",

volume = "1128",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

publisher = "IOP Publishing Ltd.",

number = "1",

note = "3rd All-Russian Scientific Conference Thermophysics and Physical Hydrodynamics with the School for Young Scientists, TPH 2018 ; Conference date: 10-09-2018 Through 16-09-2018",

}

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.

UR - http://www.scopus.com/inward/record.url?scp=85058661330&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85058661330&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/1128/1/012076

DO - 10.1088/1742-6596/1128/1/012076

M3 - Conference article

AN - SCOPUS:85058661330

VL - 1128

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 1

M1 - 012076

T2 - 3rd All-Russian Scientific Conference Thermophysics and Physical Hydrodynamics with the School for Young Scientists, TPH 2018

Y2 - 10 September 2018 through 16 September 2018

ER -

Comparison of differential and integral methods for coal oxidation kinetic analysis

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Cite this