摘要
针对5种超临界和超超临界锅炉的典型炉型,对关键性设计数据进行定量分析。得到重要结论:对于同容量锅炉,尽管采用不同技术设计,但不同炉型之间既有趋同化倾向,也有差异。差异主要由燃烧方式、煤质的灰熔融特性和着火、燃尽特性以及设计安全性裕量不同决定;采用不同燃烧技术和水冷壁型式的2种1000 MW超超临界锅炉的炉型结构及关键性设计数据基本相同。不同炉型的燃烧效率、结渣特性、控制NOx生成量以至对煤质变化的适应性具有明显的可对比性,炉型结构的趋同性和可对比性十分有利于根据中国煤质特性改进设计技术和总结运行经验。
Against 5 typical furnaces shape of supercritical and ultra-supercritical boiler,quantitative analysis the critical design data. Obtain the important conclusion that. with regard to the boilers that have the same capacity, although the technical designs are different, the different furnace shapes have the assimilate tendency and the differences. The differences are mainly determined by the combustion method, coal ash fusibility, the characteristics of ignition and burnout, and the difference of the designed safety margin; two 1 000 MW ultra-supercritical boilers adopt the different combustion technology and different type of water wall basically have the same furnace shape and the same critical design data. The combustion efficiency, slag characteristics, the control of the NOx production quantity and the adaptability to the change of coal in different type of furnaces are evidently comparable, the character of comparable and the assimilate tendency of furnace structure are in favor of improving the design technology according to the character of coal in China and summarizing the operational experience.
出处
《锅炉技术》
北大核心
2008年第4期1-4,57,共5页
Boiler Technology
关键词
超临界
超超临界
锅炉
炉型结构
定量分析
supercritical
ultra-supercritical
coal burning boiler
furnace structure
quantitative analysis
