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| 论文编号: |
122214O120110252 |
| 第一作者所在部门: |
904组 |
| 中文论文题目: |
Comparison Study on CO2-Gasification Reactivity of Different Chars
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| 英文论文题目: |
Comparison Study on CO2-Gasification Reactivity of Different Chars
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| 论文题目英文: |
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| 作者: |
杨建丽
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| 论文出处: |
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| 刊物名称: |
The 28th Annual International Pittsburgh Coal Conferenc
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| 年: |
2011
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| 卷: |
0 |
| 期: |
0 |
| 页: |
53 |
| 联系作者: |
杨建丽 |
| 收录类别: |
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| 影响因子: |
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| 摘要: |
Coal gasification, in which coal is reacted with steam or carbon dioxide to produce a mixture of carbon monoxide and hydrogen (synthesis gas), has been intensively studied all over the world. The reaction of coal char with CO2 is used for study of coal gasification. In this work, the comparison study was made for the CO2-gasification reactivity of different chars included that from the different coals and under the different pyrolysis conditions as well as the coke from petroleum by the temperature-programmed reaction (TPR) technique. The results showed that the gasification reactivity of the tested chars and cokes was significantly different. The gasification reactivity of char increased as the decrease of the coal rank. The chars from the lignite have a higher reactivity than the chars from the higher rank coal or the cokes from petroleum. The gasification reactivity of the petroleum cokes is much lower than the chars from lignite and even lower than the chars from bituminous coal. It was found that the higher the pyrolysis temperature the lower the gasification reactivity. It was also found that the gasification reactivity of the coal char was greatly enhanced after the treatment by tetrahydrofuran (THF) extraction, which may be owing to the changes of the pore structure and the surface area of the coal char. In addition, the transformation of sulfur-containing gases during gasification was also investigated. Results showed that the main sulfur-containing gases were SO2 and COS, and the release characteristic was dependent on the coal type and the sulfur forms in coal. |
| 英文摘要: |
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