| Numerical simulation of temperature field during gas preheating and start-up of drained aluminum reduction cell |
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| 作者单位： | School of Energy and Power Engineering Central South University Changsha 410083 China，School of Mechanical Engineering Xia ngtan University Xiangtan 411105 China，School of Energy and Power Engineering Central South University Changsha 410083 China |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 1 Introduction The drained aluminum reduction cell is a new type cell and it is predicted that it can reduce the voltage of the cell 0.6 V and save the consumption of direct current 2400 kW?h/t, compared with the general cells1,2]. Therefore, more and m…
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| 关 键 词： | 铝电解槽 气体预热 温度场 数值模拟 |
| 收稿时间： | 2005-09-09 |
| 修稿时间： | 2006-03-06 |
Numerical simulation of temperature field during gas preheating and start-up of drained aluminum reduction cell |
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| Authors: | ZHOU Ping WANG Zhi-qi ZHOU Nai-jun |
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| Affiliation: | 1. School of Energy and Power Engineering, Central South University, Changsha 410083, China;2. School of Mechanical Engineering, Xiangtan University, Xiangtan 411105, China;1. Laboratory of Non Metallic Materials, Institute of Optics and Precision Mechanics, University Ferhat Abbas Setif 1, Setif 19000, Algeria;2. Research Unit on Emerging Materials (RUEM), University Ferhat Abbas Setif l, Setif 19000, Algeria;3. Physics Department, Faculty of Sciences, University Mohamed Boudiaf – M''sila, M''sila 28000, Algeria;4. Laboratory MATEIS (UMR CNRS 5510), Bat. Blaise Pascal, INSA, Villeurbanne, France;1. Research Institute for Chemical Process Technology, National Institute of Advanced Industrial Science and Technology (AIST), 4-2-1 Nigatake, Miyagino-ku, Sendai, Miyagi 983-8551, Japan;2. Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan;1. Institute of Adaptronics and Function Integration, Technische Universität Braunschweig, Langer Kamp 6, 38106 Braunschweig, Germany;2. Institute of Structural Analysis, Leibniz Universität Hannover, Appelstraße 9A, 30167 Hannover, Germany;3. Institute of Composite Structures and Adaptive Systems, DLR (German Aerospace Center), Lilienthalplatz 7, 38108 Braunschweig, Germany;1. Ceramics Division, Research Institute for Materials Science and Technology (INTEMA), CONICET/UNMdP, Mar del Plata, Buenos Aires B7608FDQ, Argentina;2. Department of Glass and Ceramics, University of Chemistry and Technology, Prague (UCT Prague), 166 28 Prague 6, Czech Republic |
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| Abstract: | The method of numerical simulation was applied to investigate gas preheating and start-up process in a drained aluminum reduction cell. The transient temperature and velocity fields of a 156 kA drained aluminum reduction cell were numerically calculated. The results show that the method of gas preheating and bake-out can basically meet the technical requirements of the start-up process for the drained cell. If the same distributing scheme of gas nozzle as that in the general cells is used, there are problems of great temperature gradients and low temperature zone at the top of cathode near the side of nozzles. In order to promote the effect of gas preheating and baking the drained cell, the jetting angle of end nozzle is adjusted and the temperature distribution in the drained cell is obviously improved. By means of simulating the temperature field in the case that jetting angle varies from 0° to 30°, it is concluded that better temperature distribution can be obtained if the jetting angle of end nozzle is approximately 15°. |
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| Keywords: | drained cell aluminum reduction cell gas preheating start-up temperature field numerical simulation |
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