| Na2Cr2O7和NaClO4对水泥窑用煤燃烧特性的影响 |
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| 作者姓名： | 王世杰 吕 源 黄陈杰 秦 瑾 刘瑞芝 胡芝娟 |
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| 作者单位： | 武汉科技大学煤转化与新型炭材料湖北省重点实验室,湖北 武汉,430081;武汉科技大学煤转化与新型炭材料湖北省重点实验室,湖北 武汉,430081;武汉科技大学煤转化与新型炭材料湖北省重点实验室,湖北 武汉,430081;武汉科技大学煤转化与新型炭材料湖北省重点实验室,湖北 武汉,430081;天津水泥工业设计研究院有限公司,天津,300400;天津水泥工业设计研究院有限公司,天津,300400 |
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| 基金项目： | 武汉科技大学大学生科技创新基金资助项目(2009～2010年). |
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| 摘 要： | 以煤的着火点、燃尽点、燃烧烈度、平均放热强度和发热量为评价指标,利用TG-DSC分析添加剂Na2Cr2O7和NaClO4对水泥窑用煤燃烧特性的影响.结果表明,两类燃煤添加剂均能改变水泥窑用煤的燃烧特性.两类添加剂的加入降低了水泥窑用煤燃烧的着火点和燃尽点,使其能够在较低的温度下进行燃烧,提高煤的燃烧性和燃尽性,同时降低...
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| 关 键 词： | 水泥窑用煤 燃煤添加剂 TG-DSC 燃烧特性 |
| 收稿时间： | 2010/10/13 0:00:00 |
Effects of Na2Cr2O7and NaClO4on combustion characteristics of coal used in cement kiln |
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| Authors: | Wang Shijie Lu Yuan Huang Chenjie Qin Jin Liu Ruizhi and Hu Zhijuan |
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| Institution: | Hubei Coal Conversion and New Carbon Materials Key Laboratory, Wuhan University of Science and Technology, Wuhan 430081, China;Hubei Coal Conversion and New Carbon Materials Key Laboratory, Wuhan University of Science and Technology, Wuhan 430081, China;Hubei Coal Conversion and New Carbon Materials Key Laboratory, Wuhan University of Science and Technology, Wuhan 430081, China;Hubei Coal Conversion and New Carbon Materials Key Laboratory, Wuhan University of Science and Technology, Wuhan 430081, China;Tianjin Cement Industry Design and Research Institute Limited Company, Tianjin 300400, China;Tianjin Cement Industry Design and Research Institute Limited Company, Tianjin 300400, China |
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| Abstract: | In this study, two additives of Na2Cr2O7and NaClO4were used and thermogravimetric differential scanning calorimetry (TG-DSC) was employed to study the combustion characteristics of coal in cement kiln. The ignition temperature, the burnout temperature, the burning intensity, the average heat liberation intensity and the calorific value were selected as evaluating indicators. The results indicate that the two additives used in the experiment are able to change the combustion characteristics of coal in cement kiln. The ignition temperature and the burnout temperature of coal are reduced with the addition of the two additives, which helps the combustion at a lower temperature and increases the coal flammability and burnout. At the same time, the additives reduce the burning intensity, make the combustion process steadier, and benefit the burning of coal in the cement kiln. Both Na2Cr2O7and NaClO4increase the calorific value of coal, accelerate the heat release, and promote coal combustion. |
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| Keywords: | coal used in cement kiln coal combustion additive TG-DSC method combustion characteristics |
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