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| 论文编号: |
122214O120110253 |
| 第一作者所在部门: |
904组 |
| 中文论文题目: |
Swelling Behavior of Coal in Solvent under Elevated Temperature and Pressure by a Linear Variable Differential Transformer Deformation Transducer
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| 英文论文题目: |
Swelling Behavior of Coal in Solvent under Elevated Temperature and Pressure by a Linear Variable Differential Transformer Deformation Transducer
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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: |
62 |
| 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: |
Quantification of coal swelling in solvent has attracted attention due to it closely related to coal conversion process, especially coal liquefaction and pretreatment. Understanding the change of the coal in solvent with temperature under pressure is essential for optimizing the coal slurry preparation condition and developing the efficient coal conversion process. In this study, a linear variable differential transformer (LVDT) deformation transducer is used to characterize the swelling behavior of eight Chinese coals (from lignite to anthracite) in two solvents under elevated temperature and pressure. A coal liquefaction process derived recycled oil (Oil) and pure tetralin (THN) are used as the test solvents. The experimental temperature and pressure used in this study are 50-400 oC and 1 MPa N2 (initial). The swelling ratios of coals in Oil increased as the increase of temperature and peaked at 300 oC for lignite L1, 300 oC for lignite L2, and 250 oC for lignite L3, respectively. Similarly, the swelling ratios of bituminous coals in Oil increased as the increase of temperature and peaked at 300 oC for bituminous coal B1, 350 oC for bituminous coal B2, and 300 oC for bituminous coal B3, respectively. However, the swelling ratios for anthracites A1 and A2 in Oil increased as the increase of temperature and kept increase continuously in the temperature range tested. The swelling ratios of bituminous coals in solvent are generally higher than that for lignite and anthracite. The swelling behavior of the coal chars (treated coal under inert gas and elevated temperatures) for bituminous coal B3 was also investigated. The swelling ratio of 150 oC and 350 oC chars in THN increased as the increase of the swelling temperature and peaked at 300 oC and 350 oC, respectively. No significant swelling in THN was observed for the char obtained by thermal treatment of coal B3 at 550 oC. |
| 英文摘要: |
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