$ CO_{2} $ conversion and decarburization kinetics of $ CO_{2} $ gas and liquid Fe–C alloy at 1873 K
Abstract The reactions between $ CO_{2} $ gas and liquid Fe–C alloy with different initial carbon concentrations at 1873 K were investigated using experimental results, thermodynamic equilibrium, and kinetic analysis. The average $ CO_{2} $ conversion is greater than 80% when the carbon content ranges from 4.0 to 1.0 wt.%. When the carbon content decreases from 0.5 to 0.1 wt.%, the average $ CO_{2} $ conversion diminishes from 83.50% to 40.84%. This proves that $ CO_{2} $ gas and liquid Fe–C alloy reaction does not reach equilibrium under experimental conditions compared with the calculated thermodynamic data. Through the kinetic analysis, it is shown that in the medium- to high-carbon liquid Fe–C alloys, the rate-controlling step involves $ CO_{2} $ gas mass transfer or mixed rate-controlling of $ CO_{2} $ gas mass transfer with adsorption and dissociation of $ CO_{2} $ gas. In contrast, in the low-carbon liquid Fe–C alloy, carbon mass transfer occurs in the molten alloy. The critical carbon content of the rate-controlling step transformation is 0.7937 wt.%..
| Medienart: |
Artikel |
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| Erscheinungsjahr: |
2021 |
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| Erschienen: |
2021 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:29 |
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| Enthalten in: |
Journal of iron and steel research international - 29(2021), 3 vom: 05. Aug., Seite 425-433 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Wu, Wen-he [VerfasserIn] |
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| Links: |
Volltext [lizenzpflichtig] |
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| Themen: |
CO |
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| Anmerkungen: |
© China Iron and Steel Research Institute Group 2021 |
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| doi: |
10.1007/s42243-021-00624-z |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
OLC2129865909 |
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| 100 | 1 | |a Wu, Wen-he |e verfasserin |4 aut | |
| 245 | 1 | 0 | |a $ CO_{2} $ conversion and decarburization kinetics of $ CO_{2} $ gas and liquid Fe–C alloy at 1873 K |
| 264 | 1 | |c 2021 | |
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| 500 | |a © China Iron and Steel Research Institute Group 2021 | ||
| 520 | |a Abstract The reactions between $ CO_{2} $ gas and liquid Fe–C alloy with different initial carbon concentrations at 1873 K were investigated using experimental results, thermodynamic equilibrium, and kinetic analysis. The average $ CO_{2} $ conversion is greater than 80% when the carbon content ranges from 4.0 to 1.0 wt.%. When the carbon content decreases from 0.5 to 0.1 wt.%, the average $ CO_{2} $ conversion diminishes from 83.50% to 40.84%. This proves that $ CO_{2} $ gas and liquid Fe–C alloy reaction does not reach equilibrium under experimental conditions compared with the calculated thermodynamic data. Through the kinetic analysis, it is shown that in the medium- to high-carbon liquid Fe–C alloys, the rate-controlling step involves $ CO_{2} $ gas mass transfer or mixed rate-controlling of $ CO_{2} $ gas mass transfer with adsorption and dissociation of $ CO_{2} $ gas. In contrast, in the low-carbon liquid Fe–C alloy, carbon mass transfer occurs in the molten alloy. The critical carbon content of the rate-controlling step transformation is 0.7937 wt.%. | ||
| 650 | 4 | |a CO | |
| 650 | 4 | |a utilization | |
| 650 | 4 | |a CO | |
| 650 | 4 | |a conversion | |
| 650 | 4 | |a Decarburization kinetics | |
| 650 | 4 | |a Fe–C alloy | |
| 650 | 4 | |a Rate-controlling step | |
| 700 | 1 | |a Zhu, Rong |4 aut | |
| 700 | 1 | |a Li, Zhi-zheng |4 aut | |
| 700 | 1 | |a Wang, Chun-yang |4 aut | |
| 700 | 1 | |a Wei, Guang-sheng |4 aut | |
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