Kinetic Analysis of Low-Rank Coal Pyrolysis by Model-Free and Model-Fitting Methods

Coal SJC, coal WJG, coal ZJM, and coal HCG were selected to investigate the pyrolysis kinetics of northern Shaanxi coals. TG and DSC experiments of four coals were carried out with a synchronous thermal analyzer at heating rates 5, 10, 15, and 20 C/min, respectively. The pyrolysis characteristics we...

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Main Authors: Qiuli Zhang, Min Luo, Long Yan, Aiwu Yang, Xiangrong Hui
Format: Article
Language:English
Published: Wiley 2019-01-01
Series:Journal of Chemistry
Online Access:http://dx.doi.org/10.1155/2019/9075862
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author Qiuli Zhang
Min Luo
Long Yan
Aiwu Yang
Xiangrong Hui
author_facet Qiuli Zhang
Min Luo
Long Yan
Aiwu Yang
Xiangrong Hui
author_sort Qiuli Zhang
collection DOAJ
description Coal SJC, coal WJG, coal ZJM, and coal HCG were selected to investigate the pyrolysis kinetics of northern Shaanxi coals. TG and DSC experiments of four coals were carried out with a synchronous thermal analyzer at heating rates 5, 10, 15, and 20 C/min, respectively. The pyrolysis characteristics were described by thermogravimetric data, and the kinetic parameters were calculated by Flynn–Wall–Ozawa (FWO), Kissinger, general integration, and MacCallum–Tanner methods. The results show that coal SJC, coal ZJM, and coal HCG all conform to the reaction series equation, the thermal decomposition reaction rate is controlled by chemical reaction, and coal WJG conforms to Avrami–Erofeev equation. The activation energies of the four coals are 177.53 kJ/mol, 200.34 kJ/mol, 158.59 kJ/mol, and 240.47 kJ/mol, respectively.
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id doaj-art-5ea64759b5dd46c887d90cdb0e2814fb
institution Kabale University
issn 2090-9063
2090-9071
language English
publishDate 2019-01-01
publisher Wiley
record_format Article
series Journal of Chemistry
spelling doaj-art-5ea64759b5dd46c887d90cdb0e2814fb2025-02-03T01:33:29ZengWileyJournal of Chemistry2090-90632090-90712019-01-01201910.1155/2019/90758629075862Kinetic Analysis of Low-Rank Coal Pyrolysis by Model-Free and Model-Fitting MethodsQiuli Zhang0Min Luo1Long Yan2Aiwu Yang3Xiangrong Hui4School of Chemistry and Chemical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Chemistry and Chemical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaSchool of Chemistry and Chemical Engineering, Yulin University, Yulin 719000, ChinaXi’an Boyan Instrument Analysis and Application Technology Co.Ltd., Xi’an 710016, ChinaSchool of Chemistry and Chemical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, ChinaCoal SJC, coal WJG, coal ZJM, and coal HCG were selected to investigate the pyrolysis kinetics of northern Shaanxi coals. TG and DSC experiments of four coals were carried out with a synchronous thermal analyzer at heating rates 5, 10, 15, and 20 C/min, respectively. The pyrolysis characteristics were described by thermogravimetric data, and the kinetic parameters were calculated by Flynn–Wall–Ozawa (FWO), Kissinger, general integration, and MacCallum–Tanner methods. The results show that coal SJC, coal ZJM, and coal HCG all conform to the reaction series equation, the thermal decomposition reaction rate is controlled by chemical reaction, and coal WJG conforms to Avrami–Erofeev equation. The activation energies of the four coals are 177.53 kJ/mol, 200.34 kJ/mol, 158.59 kJ/mol, and 240.47 kJ/mol, respectively.http://dx.doi.org/10.1155/2019/9075862
spellingShingle Qiuli Zhang
Min Luo
Long Yan
Aiwu Yang
Xiangrong Hui
Kinetic Analysis of Low-Rank Coal Pyrolysis by Model-Free and Model-Fitting Methods
Journal of Chemistry
title Kinetic Analysis of Low-Rank Coal Pyrolysis by Model-Free and Model-Fitting Methods
title_full Kinetic Analysis of Low-Rank Coal Pyrolysis by Model-Free and Model-Fitting Methods
title_fullStr Kinetic Analysis of Low-Rank Coal Pyrolysis by Model-Free and Model-Fitting Methods
title_full_unstemmed Kinetic Analysis of Low-Rank Coal Pyrolysis by Model-Free and Model-Fitting Methods
title_short Kinetic Analysis of Low-Rank Coal Pyrolysis by Model-Free and Model-Fitting Methods
title_sort kinetic analysis of low rank coal pyrolysis by model free and model fitting methods
url http://dx.doi.org/10.1155/2019/9075862
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AT longyan kineticanalysisoflowrankcoalpyrolysisbymodelfreeandmodelfittingmethods
AT aiwuyang kineticanalysisoflowrankcoalpyrolysisbymodelfreeandmodelfittingmethods
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