垃圾发电厂锅炉炉体外表面温度影响因素分析

详细信息    查看全文 | 推荐本文 |

英文篇名：Influence Factors Analysis on External Surface Temperature of Boiler Furnace in Waste Power Plant 作者：赵正萍 ; 严江萍 英文作者：Zhao Zhengping;Yan Jiangping;China Tianying Environmental Protection & Energy Co.Ltd.; 关键词：锅炉 ; 炉体外表面温度 ; 保温材料 ; 导热系数 英文关键词：boiler;;external surface temperature of boiler furnace;;thermal insulation material;;heat conductivity coefficient 中文刊名：环境卫生工程 英文刊名：Environmental Sanitation Engineering 机构：中国天楹环保能源股份有限公司; 出版日期：2019-10-25 出版单位：环境卫生工程 年：2019 期：05 语种：中文; 页：36-38+45 页数：4 CN：12-1218/X ISSN：1005-8206 分类号：X705;TM621.2

摘要

阐述了锅炉炉体外表面温度的计算公式,运用先假设再校核的原则得出炉体外表面温度的影响因素有保温材料的种类、保温材料的厚度、炉体所处的环境温度、导热系数、炉体长度,垃圾发电厂锅炉本体保温材料的种类有硅酸铝纤维棉、岩棉、玻璃棉,并对此进行了详细比较,硅酸铝纤维棉相较于岩棉、玻璃棉有低导热率、热稳定性及化学稳定性等优点,性价比高。结合国内某垃圾发电厂进行实际案例分析,采用硅酸铝纤维棉作为保温材料,厚度为220 mm,经过计算及实际运营数据显示炉体外表面温度无超温现象,如厚度再增加,经济性较低。在保持其他变量不变的情况下,以数据计算配以图表分析得到了保温材料的厚度、环境温度、导热系数、炉体长度对炉体外表面温度的影响。环境温度上升,炉体外表面温度将大幅上升。保温材料中水分上升使得导热系数升高将急剧加大炉体外表面温度。炉体长度变长,炉体外表面温度有下降趋势,影响甚微。
        The calculation formula of external surface temperature of boiler furnace was elaborated,and the influencing factors of external surface temperature of boiler furnace including the type and thickness of thermal preservation material,ambient temperature of boiler furnace,thermal conductivity coefficient and length of boiler furnace were obtained by using the principle of first hypothesis and then check. The types of thermal insulation materials used in waste power plant boilers including aluminum silicate fiber wool,rock wool and glass wool,and a detailed comparison was made for these. Compared with rock wool and glass wool,aluminum silicate fiber wool with high cost performance has the advantages of low thermal conductivity,thermal stability and chemical stability. Combined with a practical case analysis of a waste power plant in China,aluminum silicate fiber wool was used as insulation material with a thickness of 220 mm. Through calculation and actual operation data,it is showed that the external surface temperature of the boiler furnace does not exceed the temperature phenomenon. If the thickness is increased again,the economy will be low. Under the condition of keeping other variables unchanged,the influence of the thickness of insulation material,ambient temperature,thermal conductivity and length of boiler furnace on the external surface temperature of boiler furnace were analyzed by data calculation and charts. As ambient temperature rising,the temperature of the external surface of boiler furnace will increase substantially. The increase of thermal conductivity caused by the rise of moisture in the insulation material will sharply increase the external surface temperature of boiler furnace. As the length of the furnace increases,the external surface temperature of boiler furnace will decrease,but the effect is small.

引文

[1]焦同帅，阎维平，曹颖，等. CFB锅炉散热损失测算及估算对锅炉效率的影响研究[J].热力发电，2016,45(12):45-49.
    [2]白良成.生活垃圾焚烧处理工程技术[M].北京：中国建筑工业出版社，2009.
    [3]李姿，杨强.建筑保温隔热材料的应用及发展方向[J].河南建材，2016(2):153-154.
    [4]于洋，韩晓光.火电厂锅炉本体保温施工技术探析[J].现代国企研究，2016(18):172.
    [5]杨世铭，陶文铨.传热学[M]. 3版.北京：高等教育出版社，2006.
    [6]白婷婷，陈涛，刘慧杰.保温厚度计算方法的探讨[J].化工设计通讯，2007,33(1):53-57.
    [7]姚凯，郑会保，刘运传，等.硅酸铝纤维板热导率拟合方程的建立及试验验证[J].耐火材料，2017,51(4):297-299.