| 处理污泥焦颗粒内部孔结构在燃烧过程中变化 |
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| 引用本文： | 李培生,胡益,李洁,向军,孙路石,胡松,熊友辉,孙学信.处理污泥焦颗粒内部孔结构在燃烧过程中变化[J].工程热物理学报,2007,28(4):699-701. |
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| 作者姓名： | 李培生 胡益 李洁 向军 孙路石 胡松 熊友辉 孙学信 |
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| 作者单位： | 1. 武汉大学动力与机械学院,湖北,武汉,430072
2. 华中科技大学煤燃烧国家重点实验室,湖北,武汉,430074 |
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| 摘 要： | 在管式炉反应器中进行了1种污泥定温燃烧试验,进行了5个不同燃烬率样品的液氮静态容量法等温物理吸附试验.发现不同燃烬率的污泥样品孔分布特性相似,其孔系统可能主要是由一端封闭的不透气的孔构成;随着燃烬率的增加,比表面积、平均孔径和孔体积等参数变化不同;样品颗粒内孔表面分形维数随燃烬率的增长呈先降低再升高的趋势.
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| 关 键 词： | 污泥 燃烧 孔隙结构 分形理论 |
| 文章编号： | 0253-231X(2007)04-0699-03 |
| 修稿时间： | 2006年12月9日 |
INNER-PORE STRUCTURE CHANGE OF SEWAGE SLUDGE CHAR PARTICLE DURING COMBUSTION |
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| LI Pei-Sheng,HU Yi,LI Jie,XIANG Jun,SUN Lu-Shi,HU Sung,XIONG You-Hui,SUN Xue-Xin.INNER-PORE STRUCTURE CHANGE OF SEWAGE SLUDGE CHAR PARTICLE DURING COMBUSTION[J].Journal of Engineering Thermophysics,2007,28(4):699-701. |
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| Authors: | LI Pei-Sheng HU Yi LI Jie XIANG Jun SUN Lu-Shi HU Sung XIONG You-Hui SUN Xue-Xin |
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| Abstract: | The isothermal combustion of sewage sludge was performed in a fixed-tube reactor at 1123 K.Inner-Pore structure parameters of sewage sludge char particle with 5 different burn-out ratios were measured with N_2 adsorption method.It was shown that inner-pore distributing of samples was similar.Pore structure in inner-pore system could be regarded as gasproof and one end closed. Parameters of BET Surface Area,Pore size and Pore Volume were changed in different trends with burn-out ratio increasing.Inner-pore Surface Fractal Dimension presented in the tendency of rising at the beginning and declining with burn-out ratio increasing. |
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| Keywords: | sewage sludge combustion porous structure fractal theory |
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