| 炼镁还原罐内传热与化学反应的耦合特性 | |
| 杨康定 ; 陈群 ; 任建勋 ; YANG Kangding ; CHEN Qun ; REN Jianxun | |
| 2010-06-07 ; 2010-06-07 | |
| 关键词 | 传热 皮江法 炼镁还原罐 还原反应 耦合特性 heat transfer Pidgeon process magnesium reduction retorts reduction reaction coupled properties TF822 |
| 其他题名 | Coupled heat transfer and chemical reactions in magnesium production retorts |
| 中文摘要 | 为了综合分析还原罐内传热过程及化学反应过程对Pidgeon炼镁工艺中产镁速率和反应转换率的影响机理,建立了具有耦合特征的传热和反应动力学模型。利用该模型对炼镁过程进行了数值模拟,获得了还原罐内的温度和产镁速率的空间分布和时间分布,并分析了罐外等效换热系数对上述结果的影响。结果表明:罐中心区域与罐壁处的温度及反应速率存在较大差值;球团的吸热反应特性及导热热阻是影响产镁速率和反应转换率的主要原因,而等效换热系数在达到一定数值后,对罐内的工作过程影响不大。; A coupled heat transfer and reaction kinetics model was used to analyze the impact of the heat transfer and chemical reactions on the magnesium production rate and the transition rate in magnesium production retorts.This model was solved numerically for the magnesium production process to obtain the spatial and temporal temperature distributions and the local reaction rates in the retorts.The impact of the effective outside heat transfer coefficient on the temperature distributions was also analyzed.The results show that the temperature and the local reaction rate in the center are much lower than near the wall and that the endothermic reaction and the heat transfer in the materials are the main factors affecting the production rate and the transition rate.The effective article heat transfer coefficient has little influence on the processes in large retorts.; 中国博士后科学基金项目(20080440027); 北京市重点实验室建设项目(SYS100030406) |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/37645]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 杨康定,陈群,任建勋,等. 炼镁还原罐内传热与化学反应的耦合特性[J],2010, 2010. |
| APA | 杨康定,陈群,任建勋,YANG Kangding,CHEN Qun,&REN Jianxun.(2010).炼镁还原罐内传热与化学反应的耦合特性.. |
| MLA | 杨康定,et al."炼镁还原罐内传热与化学反应的耦合特性".(2010). |
| 个性服务 |
| 查看访问统计 |
| 相关权益政策 |
| 暂无数据 |
| 收藏/分享 |
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
修改评论