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| 论文编号: |
122214O120130250 |
| 第一作者所在部门: |
101组 |
| 中文论文题目: |
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| 英文论文题目: |
Mineral behavior of low-temperature lignite ashes under gasification atmosphere
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| 论文题目英文: |
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| 作者: |
李风海
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| 论文出处: |
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| 刊物名称: |
Korean Journal of Chemical Engineering
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| 年: |
2013
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| 卷: |
30 |
| 期: |
3 |
| 页: |
605-612 |
| 联系作者: |
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| 收录类别: |
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| 影响因子: |
1.059
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| 摘要: |
To investigate the mineral behavior of lignite ashes under gasification conditions, 450 oC Xiaolongtan lignite
ash samples (XLT-LTA) treated at different temperatures or pressures under reducing atmosphere (H2/CO2=1 : 1, volume
ratio) have been examined by means of an SC-444 apparatus, a scanning electron microscope with an energy dispersive
X-ray detector (SEM-EDX), and by X-ray diffraction (XRD). The results showed the sulfur content in the XLT-LTA
to be much higher than that in ashes prepared at 815 oC, as a result of the release of sulfur dioxide during the oxidization
of pyrite. With increasing temperature, the XLT-LTA particles gradually agglomerate and form partially molten surface
entities with obvious apertures, and the content of iron and calcium in the congeries or molten parts increases due to
the fusion of fine ash particles with the enrichment of iron and the formation of low-temperature eutectics of calcium
and iron. An increase of pressure restrains the decomposition of calcite and muscovite, and promotes the formation
of iron minerals (e.g., hercynite, cordierite, and sekaninaite) and orthoclase. The content of amorphous material also
increases with increasing pressure. |
| 英文摘要: |
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| 外单位作者单位: |
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| 备注: |
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