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| 论文编号: |
122214O120120178 |
| 第一作者所在部门: |
101组 |
| 中文论文题目: |
Fusibility Characteristics of Residual Ash from Lignite Fluidized-Bed GasificationTo Understand Its Formation
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| 英文论文题目: |
Fusibility Characteristics of Residual Ash from Lignite Fluidized-Bed GasificationTo Understand Its Formation
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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: |
Energy & Fuels
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| 年: |
2012
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| 卷: |
26 |
| 期: |
8 |
| 页: |
5020-5027 |
| 联系作者: |
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| 收录类别: |
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| 影响因子: |
2.721
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| 摘要: |
"To investigate fusibility characteristics of residual ash from Xiaolongtan lignite (XLT) pressurized fluidized-bed
ash agglomerate (PFBA) gasification and its formation mechanism, the ash samples were examined by press-drop sintering
technique, scanning electron microscope with energy-dispersive X-ray detector (SEM？EDX), and X-ray diffraction (XRD)
analyses. The results show that both sintering temperatures and ash fusion temperatures (AFTs) of ash samples decrease from
the gangue ashes to agglomerates to slag, because of the increase of the total base content and the differences in their mineral
compositions accordingly. The surfaces of the slag were obviously molten; the agglomerates were covered with some small
spheres and large particle aggregates, and the gangue ashes were composed of some irregular prismatic particles. During XLT
PFBA gasification, the agglomerates originate from the collision and reunification of low-melting minerals under the dragging
force of rising gases and the gangue ashes result from some thermally stable mineral particles with a high-melting point. When
the PFBA gasification deviates from the suitable operation parameters (e.g., the gas velocity of the distribution plate is low, the
gas velocity of the tubular loop is high, or the steam/oxygen ratio is low), the slag might be formed in the gasifier. |
| 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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