Gasification kinetic modelling of Victorian brown coal chars and validity for entrained flow gasification in CO2
The gasification kinetic modelling of two Victorian brown coal (Yallourn and Maddingley) chars and the validity for entrained flow gasification were investigated in this study. The study was conducted in a thermogravimetric analyzer (TGA) at 750–1100 ℃, 30%–90% CO2 concentration using different char...
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| Format: | Article |
| Language: | English |
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Elsevier
2021-05-01
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| Series: | International Journal of Mining Science and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S209526862100029X |
| _version_ | 1818456484568104960 |
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| author | Tao Xu Yongping Wu Sankar Bhattacharya |
| author_facet | Tao Xu Yongping Wu Sankar Bhattacharya |
| author_sort | Tao Xu |
| collection | DOAJ |
| description | The gasification kinetic modelling of two Victorian brown coal (Yallourn and Maddingley) chars and the validity for entrained flow gasification were investigated in this study. The study was conducted in a thermogravimetric analyzer (TGA) at 750–1100 ℃, 30%–90% CO2 concentration using different char particle sizes within 20–106 µm. It was found that random pore model and modified volumetric model are applicable for TGA results, but volumetric model and grain model are not. The effect of particle size under 106 µm on gasification rate is very limited. Activation energies of Maddingley char and Yallourn char in CO2 gasification are 219–220 and 197–208 kJ/mol, respectively. The pre-exponential factors are in the same order of magnitude, and they increased as particle size decreased. A mathematical model was developed to predict carbon conversion over time for entrained flow gasification of Victorian brown coal chars at 1000–1400 ℃. |
| first_indexed | 2024-12-14T22:27:24Z |
| format | Article |
| id | doaj.art-c57801c954be400e83d7c04ca26e07e6 |
| institution | Directory Open Access Journal |
| issn | 2095-2686 |
| language | English |
| last_indexed | 2024-12-14T22:27:24Z |
| publishDate | 2021-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Mining Science and Technology |
| spelling | doaj.art-c57801c954be400e83d7c04ca26e07e62022-12-21T22:45:19ZengElsevierInternational Journal of Mining Science and Technology2095-26862021-05-01313473481Gasification kinetic modelling of Victorian brown coal chars and validity for entrained flow gasification in CO2Tao Xu0Yongping Wu1Sankar Bhattacharya2College of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, China; Department of Chemical Engineering, Monash University, Victoria 3800, Australia; Corresponding author.College of Energy Engineering, Xi’an University of Science and Technology, Xi’an 710054, ChinaDepartment of Chemical Engineering, Monash University, Victoria 3800, AustraliaThe gasification kinetic modelling of two Victorian brown coal (Yallourn and Maddingley) chars and the validity for entrained flow gasification were investigated in this study. The study was conducted in a thermogravimetric analyzer (TGA) at 750–1100 ℃, 30%–90% CO2 concentration using different char particle sizes within 20–106 µm. It was found that random pore model and modified volumetric model are applicable for TGA results, but volumetric model and grain model are not. The effect of particle size under 106 µm on gasification rate is very limited. Activation energies of Maddingley char and Yallourn char in CO2 gasification are 219–220 and 197–208 kJ/mol, respectively. The pre-exponential factors are in the same order of magnitude, and they increased as particle size decreased. A mathematical model was developed to predict carbon conversion over time for entrained flow gasification of Victorian brown coal chars at 1000–1400 ℃.http://www.sciencedirect.com/science/article/pii/S209526862100029XVictorian brown coalGasification kineticsModellingEntrained flow gasification |
| spellingShingle | Tao Xu Yongping Wu Sankar Bhattacharya Gasification kinetic modelling of Victorian brown coal chars and validity for entrained flow gasification in CO2 International Journal of Mining Science and Technology Victorian brown coal Gasification kinetics Modelling Entrained flow gasification |
| title | Gasification kinetic modelling of Victorian brown coal chars and validity for entrained flow gasification in CO2 |
| title_full | Gasification kinetic modelling of Victorian brown coal chars and validity for entrained flow gasification in CO2 |
| title_fullStr | Gasification kinetic modelling of Victorian brown coal chars and validity for entrained flow gasification in CO2 |
| title_full_unstemmed | Gasification kinetic modelling of Victorian brown coal chars and validity for entrained flow gasification in CO2 |
| title_short | Gasification kinetic modelling of Victorian brown coal chars and validity for entrained flow gasification in CO2 |
| title_sort | gasification kinetic modelling of victorian brown coal chars and validity for entrained flow gasification in co2 |
| topic | Victorian brown coal Gasification kinetics Modelling Entrained flow gasification |
| url | http://www.sciencedirect.com/science/article/pii/S209526862100029X |
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