锅炉结焦的原因分析及预防措施

范文编号:RN010  范文字数:8252,页数:19

范文题目：锅炉结焦的原因分析及预防措施
摘　要
 对燃煤锅炉而言，结焦问题是电厂比较普遍存在的一大问题，它对锅炉运行的经济性与安全性均带来不利影响，国内外许多研究机构及大型电厂对锅炉的结焦特性和预防措施等进行了大量的研究，也提出了许多切合实际的处理措施。本文在作者几年锅炉实际运行经验的基础上，同大家探讨锅炉结焦的原因及预防措施，首先从结焦形成机理的分析入手，阐述锅炉结焦后对机组热效率、出力的影响及安全性的危害，以及通过对煤质特性、炉膛温度水平、炉内空气动力场状况等影响锅炉结焦因素的分析，结合本厂实际情况提出了从控制燃煤质量、加强运行操作、进行技术改造等几方面措施来减少或预防锅炉结焦。
 
 关键词：结焦；煤质；炉膛温度；空气动力场
 
  Title：Analysis of the Reasons for and Precautions against Boiler Coking
 Abstract
 
 As far as the coal-burning boiler is concerned, the problem of coking universally found in power plants, affects the economy and safety of the operation of boilers. Many research institutions all over the world and large plants have done a large number of studies on this issue, and proposed many realistic precautions. On the basis of the writer’s several-year-long experiences of operation of boilers, the paper discusses the reasons for and precautions against boiler coking. The paper firstly analyses the mechanism for the formation of coking, and elaborates on its effect upon thermal efficiency of generating unit and output power, and its damages to the safety. The paper goes on with the analysis of several factors influencing coking, including the quality of coal, the temperature of hearth and air dynamic field in hearth, and gives the following appropriate proposals with the actual conditions of the writer’s plant:controlling the coal quality, enhancing the operation, conducting technological innovations, so as to reduce or even prevent coking.
 
 Key words: cokin；quality of coal；temperature of hearth；air dynamic field
 
 
目  录
 
摘要…………………………………………………………………………………………V
前言…………………………………………………………………………………………1
1   锅炉结焦的概念及形成过程…………………………………………………………2
2   锅炉结焦的危害………………………………………………………………………3
3   影响锅炉结焦的因素…………………………………………………………………4
 3.1煤质特性 …………………………………………………………………………4
 3.2炉膛内温度水平 …………………………………………………………………6
 3.3炉内空气动力场 …………………………………………………………………6
    3.4本章小结 …………………………………………………………………………6
4   防止结焦的措施  ……………………………………………………………………7
 4.1选择合适煤种、控制燃煤质量 …………………………………………………7
  4.2加强运行管理、提高操作水平 …………………………………………………7
 4.3进行技术改造、采用先进工艺   ………………………………………………9
    4.4本章小结…………………………………………………………………………10
5   结论……………………………………………………………………………………11
致谢…………………………………………………………………………………………13
参考文献……………………………………………………………………………………15

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