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| 论文编号: |
122214O120130253 |
| 第一作者所在部门: |
103组 |
| 中文论文题目: |
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| 英文论文题目: |
Kinetic model of coal-char gasification with steam at elevated pressure
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| 论文题目英文: |
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| 作者: |
阎琪轩
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| 论文出处: |
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| 刊物名称: |
30th Annual International Pittsburgh Coal Conference.
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| 年: |
2013
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| 卷: |
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| 期: |
1 |
| 页: |
0-0 |
| 联系作者: |
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| 收录类别: |
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| 影响因子: |
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| 摘要: |
The kinetics of three different ranks of typical Chinese coal chars gasification with
steam was investigated at higher pressure (up to 2.0 MPa) in a pressurized fixed bed
differential (PFBD) reactor. The results show that the global nth-order rate equation
including the only item of steam partial pressure is not appropriate for the gasification
in which the total system pressure changes. Thus, in this work, a modified nth-order
rate equation was proposed, to be applied for three types of coal-chars including the
independent variables (T, yH2O, Ptotal). It is indicated that the effect of steam molar
fraction gasification rate is greater than that of the total system pressure. For the three
types of coal-chars, the correlation exponent with respect to steam molar fraction
decreases with the increase of carbon conversion; however, the carbon conversion has
little influence on the correlation exponent with respect to the total system pressure. In
addition, as the coal rank increases, the correlation exponent with respect to steam
molar fraction and the correlation exponent with the total system pressure increase slightly. |
| 英文摘要: |
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