摘要
本文论述了煤质变化对锅炉运行经济性的影响。煤水分、热值变化直接影响着制粉系统调温风量的变化,而调温风的变化又引起空气预热器吸热量的变化,从而使排烟温度和锅炉效率发生变化。锅炉性能考核时,应考虑煤质变化对锅炉效率的修正,一般情况下可以采取PTC4.1的修正方法,但用制造厂给出的修正曲线进行修正比较符合实际。
This paper discusses the effect of coal change on boiler operating economy. Coal moisture and heat value changes directly affect tempering air flow change of pulverizing system, and change of tempering air can cause change of heat absorption capacity in air preheater, which makes exit gas temperature and boiler efficiency change. During boiler performance check, generally the modify standard PTC 4.1 will be used, but the modify curve from manufacture is used for more accuracy.
出处
《锅炉制造》
2010年第2期19-22,共4页
Boiler Manufacturing
