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| 氢基竖炉最佳开炉条件的数值模拟研究 |
| Numerical simulation for the optimal blowing-in conditions of hydrogen-based shaft furnaces |
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| DOI： |
| 中文关键词: 氢基竖炉 组分输运模型 孔隙度 还原气成分 入口温度 |
| 英文关键词: hydrogen based shaft furnace component transport model porosity reducing gas composition inlet temperature |
| 基金项目:国家自然科学基金项目(51974212)；中国宝武低碳冶金创新基金项(BWLCF202116). |
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| 中文摘要: |
| 利用组分输运模型对不同孔隙度、入口温度、 H2含量条件下氢基竖炉开炉 5h的升温情况进行了模拟研究。结果表明，当还原气体组分及入口温度保持不变时，随着孔隙度的增大，炉内中心温度总体呈现升高的趋势；当孔隙度与入口温度保持不变时，炉内中心温度随着还原气体中氢气含量的增高而降低；当孔隙度与还原气体成分保持不变时，炉内中心点温度随着入口温度的上升而升高。氢基竖炉的最佳开炉条件为孔隙率 0.40~0.42、还原气体中 H2和 CO体积占比为 40%和 60%、入口温度 1173K。 |
| 英文摘要: |
| The temperature rise in hydrogen-based shaft furnaces within 5 hours of opening under different porosities，inlet temperatures and hydrogen contents was simulated by the component transport model，and the results show that when the reducing gas components and inlet temperature remain unchanged，the temperature of the center point in the furnace shows an overall trend of increasing with the increase of porosity. When the porosity and inlet temperature remain unchanged，the temperature of the center point in the furnace decreases with the increase of hydrogen content in the reducing gas. When the porosity and reducing gas composition remain unchanged，the temperature of the center point in the furnace increases with the increase of the inlet temperature. In addition，it is found out that the optimal opening conditions of hydrogen-based shaft furnaces are porosity at 0.40～0.42，hydrogen content at 40%，carbon monoxide content at 60% in reducing gas and inlet temperature at 1 173 K. |
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