Changes in char reactivity due to char-oxygen and char-steam reactions using victorian brown coal in a fixed-bed reactor
This study was to examine the influence of reactions of char–O2 and char–steam on the char reactivity evolution. A newly-designed fixed-bed reactor was used to conduct gasification experiments using Victorian brown coal at 800 °C. The chars prepared from the gasification experiments were then collec...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
Chemical Industry Press
2015
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| Online Access: | http://hdl.handle.net/20.500.11937/18505 |
| _version_ | 1848749763111944192 |
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| author | Zhang, Shu Luo, Y. Li, Chun-Zhu Wang, Y. |
| author_facet | Zhang, Shu Luo, Y. Li, Chun-Zhu Wang, Y. |
| author_sort | Zhang, Shu |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This study was to examine the influence of reactions of char–O2 and char–steam on the char reactivity evolution. A newly-designed fixed-bed reactor was used to conduct gasification experiments using Victorian brown coal at 800 °C. The chars prepared from the gasification experiments were then collected and subjected to reactivity characterisation (ex-situ reactivity) using TGA (thermogravimetric analyser) in air. The results indicate that the char reactivity from TGA was generally high when the char experienced intensive gasification reactions in 0.3% O2 in the fixed-bed reactor. The addition of steam into the gasification not only enhanced the char conversion significantly but also reduced the char reactivity dramatically. The curve shapes of the char reactivity with involvement of steam were very different from that with O2 gasification, implying the importance of gasifying agents to char properties. |
| first_indexed | 2025-11-14T07:26:06Z |
| format | Journal Article |
| id | curtin-20.500.11937-18505 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:26:06Z |
| publishDate | 2015 |
| publisher | Chemical Industry Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-185052017-09-13T13:45:16Z Changes in char reactivity due to char-oxygen and char-steam reactions using victorian brown coal in a fixed-bed reactor Zhang, Shu Luo, Y. Li, Chun-Zhu Wang, Y. This study was to examine the influence of reactions of char–O2 and char–steam on the char reactivity evolution. A newly-designed fixed-bed reactor was used to conduct gasification experiments using Victorian brown coal at 800 °C. The chars prepared from the gasification experiments were then collected and subjected to reactivity characterisation (ex-situ reactivity) using TGA (thermogravimetric analyser) in air. The results indicate that the char reactivity from TGA was generally high when the char experienced intensive gasification reactions in 0.3% O2 in the fixed-bed reactor. The addition of steam into the gasification not only enhanced the char conversion significantly but also reduced the char reactivity dramatically. The curve shapes of the char reactivity with involvement of steam were very different from that with O2 gasification, implying the importance of gasifying agents to char properties. 2015 Journal Article http://hdl.handle.net/20.500.11937/18505 10.1016/j.cjche.2014.09.044 Chemical Industry Press restricted |
| spellingShingle | Zhang, Shu Luo, Y. Li, Chun-Zhu Wang, Y. Changes in char reactivity due to char-oxygen and char-steam reactions using victorian brown coal in a fixed-bed reactor |
| title | Changes in char reactivity due to char-oxygen and char-steam reactions using victorian brown coal in a fixed-bed reactor |
| title_full | Changes in char reactivity due to char-oxygen and char-steam reactions using victorian brown coal in a fixed-bed reactor |
| title_fullStr | Changes in char reactivity due to char-oxygen and char-steam reactions using victorian brown coal in a fixed-bed reactor |
| title_full_unstemmed | Changes in char reactivity due to char-oxygen and char-steam reactions using victorian brown coal in a fixed-bed reactor |
| title_short | Changes in char reactivity due to char-oxygen and char-steam reactions using victorian brown coal in a fixed-bed reactor |
| title_sort | changes in char reactivity due to char-oxygen and char-steam reactions using victorian brown coal in a fixed-bed reactor |
| url | http://hdl.handle.net/20.500.11937/18505 |