| 污泥干燥特性及动力学模型分析 |
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| 引用本文： | 魏瑞军,;余权恒. 污泥干燥特性及动力学模型分析[J]. 山东化工, 2014, 0(9): 1-4 |
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| 作者姓名： | 魏瑞军, 余权恒 |
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| 作者单位： | [1]新会双水发电(B厂)有限公司,广东江门529153; [2]能源高效清洁利用广东普通高校重点实验室,广东广州510640 |
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| 基金项目： | 国家重点基础研究发展计划（973计划）（2011CB201500）、工业污泥在燃煤电站中无害化和资源化处置关键技术研究及应用;广东省科技计划（20128091000166） |
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| 摘 要： | 在80℃~160℃温度条件下,对5 mm厚度的污泥薄层进行干燥实验研究,得出污泥的干燥特性曲线。引入5种常用的污泥干燥动力学模型对污泥干燥数据进行拟合,研究表明Hasibuan and Daud模型拟合程度最高。利用Fick扩散模型,求解得出污泥样品的干燥扩散系数在2.51E-09 m2/s~8.85E-09 m2/s之间,而干燥扩散系数随着温度的升高而增大。应用Arrhenius方程求解,得到污泥的活化能Ea为19.739008 kJ/mol,指前因子D0为2.13247E-06 m2/s。
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| 关 键 词： | 污水污泥 干燥 动力学模型 |
Thim Layer Dryimg Characteristics amd Kimetics Model of Sludge |
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| Wei Ruijun;Yu Quan-heng. Thim Layer Dryimg Characteristics amd Kimetics Model of Sludge[J]. Shandong Chemical Industry, 2014, 0(9): 1-4 |
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| Authors: | Wei Ruijun Yu Quan-heng |
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| Affiliation: | Wei Ruijun, Yu Quan-heng ( 1. Xinhui Shuangshui Power (B plant) Co. ,Ltd. ,Jiangmen 529153 ,China ; 2. Key Laboratory of Efficient and Clean Energy Utilization of Guangdong Higher Education Institutes, South China University of Technology, Guangzhou 510640, China) |
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| Abstract: | The thin layer dring behavior of 5mm thick sludge was investigated over 80℃ - 160℃ . The Hasibuan and Daud model showed better predictions. Through the Fickˊs diffusion model,the drying diffusivity coefficient of moisture transfer was between 2. 51E - 09m2 / s to 8. 85E - 09m2 / s,which increased as the temperature rose. With the Arrhenius type relationship,the activation energy for the moisture diffusion of sludge drying was found to be 19. 739008kJ/ mol and pre -exponential factor was found to be 2. 13247E - 06m2 / s. |
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| Keywords: | sewage sludge drying kinetics model |
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