| 回转窑供风管参数对窑内热工状况的影响 |
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| 引用本文： | 陈文仲,王春华,刘宝玉,贾冯睿,田远航. 回转窑供风管参数对窑内热工状况的影响[J]. 化工学报, 2011, 62(11): 3109-3114. DOI: 10.3969/j.issn.0438-1157.2011.11.019 |
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| 作者姓名： | 陈文仲 王春华 刘宝玉 贾冯睿 田远航 |
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| 作者单位： | 东北大学材料与冶金学院;辽宁石油化工大学石油天然气工程学院;沈阳远大铝业集团 |
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| 基金项目： | 国家科技支撑计划课题项目(2006BAB12B04)~~ |
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| 摘 要： | 以2.3 m×55 m的炭素回转窑作为研究对象，应用流体模拟软件Fluent 和Matlab 分别对其气体空间和物料料层内的传热过程进行了研究。通过改变二、三次供风管的长度和供风管入口处的空气吹向，得到了相应条件下窑内的温度分布，并进行了比较和分析。结果表明：二、三次供风管的长度对窑内温度场的影响较小，实践中可以采用无管供风措施，以解决供风管道烧损问题；当二、三次供风管在某一长度下窑内煅烧带温度较高时，其窑内剩余的可燃气体较低；二、三次供风管入口处空气均吹向窑头时，窑尾处剩余可燃气体浓度较大，但其煅烧带温度较高，煅烧带长度较长；当二、三次供风管入口处空气均吹向窑尾时，窑尾处剩余可燃气体浓度较小，但其煅烧带温度较低，煅烧带长度较短。
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| 关 键 词： | 炭素回转窑 供风管长度 温度场 空气吹向 |
Influences of air pipe parameters on thermal working conditions in carbon rotary kilns |
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| CHEN Wenzhong,WANG Chunhua,LIU Baoyu,JIA Fengrui,TIAN Yuanhang. Influences of air pipe parameters on thermal working conditions in carbon rotary kilns[J]. Journal of Chemical Industry and Engineering(China), 2011, 62(11): 3109-3114. DOI: 10.3969/j.issn.0438-1157.2011.11.019 |
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| Authors: | CHEN Wenzhong WANG Chunhua LIU Baoyu JIA Fengrui TIAN Yuanhang |
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| Affiliation: | CHEN Wenzhong1,WANG Chunhua2,LIU Baoyu2,JIA Fengrui2,TIAN Yuanhang3 (1College of Materials and Metallurgy,Northeastern University,Shenyang 110004,Liaoning,China,2College of Petroleum Engineering,Liaoning Shihua University,Fushun 113001,3Shenyang Yuanda Aluminum Industry Engineering Co.Ltd.,Shenyang 110161,China) |
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| Abstract: | Taking a 2.3 m×55 m carbon rotary kiln for example, numerical simulations were conducted on gas and solid spaces of the kiln by using Fluent and Matlab softwares. Through changing air pipe length and air flow of secondary and tertiary air, temperature field distributions and gas concentration distributions were obtained under different conditions. The results indicated that air pipe length had insignificant influence on kiln temperature, so air could be supplied without pipe in practical engineering to resolve the burning out of air pipe. When the length of air pipe equaled a specific value, kiln temperature was up to a higher temperature. At the same time, the concentration of the remaining combustible gas was lower under that condition. As the secondary and tertiary air flowed to the kiln outlet, the remaining combustible gas was higher at the kiln inlet, but the temperature of the calcining zone was higher, and the length of the calcining zone was longer. Conversely, the remaining combustible gas was lower at the kiln inlet, the temperature of the calcining zone was lower, and the length of the calcining zone was shorter as the secondary and tertiary air flowed to the kiln inlet. |
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| Keywords: | carbon rotary kiln air pipe length temperature field air flow |
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