| 梭式窑预混富氧燃烧预热阶段换热特性的模拟研究 |
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| 引用本文： | 冯青,王化能,朱庆霞,付海丹.梭式窑预混富氧燃烧预热阶段换热特性的模拟研究[J].中国陶瓷,2012(6):43-46. |
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| 作者姓名： | 冯青 王化能 朱庆霞 付海丹 |
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| 作者单位： | 景德镇陶瓷学院材料科学与工程学院江西省先进陶瓷材料重点实验室;杭州诺贝尔集团有限公司 |
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| 基金项目： | 江西省教育厅青年科学基金项目(GJJ11201) |
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| 摘 要： | 通过计算流体力学(CFD)软件—FLUENT研究了富氧浓度对预热阶段梭式窑内换热特性的影响。结果表明火焰最高温度随富氧浓度的增加非线性增大。梭式窑内的富氧燃烧可以减少高温高速烟气射流直接对窑墙的冲刷。由于烟气不能充分冲刷烧嘴附近区域和烟气射流顶部回流的影响,窑炉断面出现温差。为使窑内温度尽量均匀,预热阶段也可通过控制燃料量,点燃全部烧嘴。富氧助燃可以使窑内换热增强,减小窑内温差。
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| 关 键 词： | 梭式窑 预混富氧燃烧 富氧浓度 换热特性 预热阶段 |
NUMERICAL RESEARCH ON HEAT-TRANSFER CHARACTERISTICS OF PREMIXED OXYGEN-ENRICHED COMBUSTION IN THE PREHEATING STAGE OF SHUTTLE KILN |
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| Feng Qing,Wang Hua’neng,Zhu Qingxia,Fu Haidan.NUMERICAL RESEARCH ON HEAT-TRANSFER CHARACTERISTICS OF PREMIXED OXYGEN-ENRICHED COMBUSTION IN THE PREHEATING STAGE OF SHUTTLE KILN[J].China Ceramics,2012(6):43-46. |
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| Authors: | Feng Qing Wang Hua’neng Zhu Qingxia Fu Haidan |
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| Affiliation: | 1 (1 School of Materials Science and Engineering,Jingdezhen Ceramic Institute, Key Laboratory of Advanced Ceramics of Jiangxi Province,Jingdezhen 333001; 2 Hangzhou Nabel Group Co.,Ltd,Hangzhou 311122) |
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| Abstract: | The effect of oxygen concentration on the heat-transfer characteristics in the preheating stage of shuttle kiln was investigated by Computational Fluid Dynamics(CFD) software-FLUENT.The results show that the flame maximum temperature increases nonlinearly with the oxygen concentration.Oxygen-enriched combustion technology can reduce the direct erosion of the gas jet on the kiln wall of shuttle kiln.Temperature difference appears in the furnace section due to inadequate punching of gas jet on the area near the burner and the reflux effect of gas jet at the top.To ensure the kiln temperature uniform,all burners can be ignited by controlling the fuel flow.Oxygen-enriched combustion enhances the heat-transfer and reduces the temperature difference. |
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| Keywords: | shuttle kiln premixed oxygen-enriched combustion oxygen concentration heat-transfer characteristics preheating stage |
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