作　　者： ; ; ;

机构地区： 山西电力科学研究院

出　　处： 《山西电力》 2009年第6期52-55,共4页

摘　　要： 针对山西神头发电责任有限公司苏制670 t/h锅炉存在的主汽温度偏低及屏式过热器超温的问题,总结了屏式过热器壁温的试验特性,分析了大修清理积灰后主汽温度偏低现象更加突出的规律,提出了将屏式过热器热负荷较高区域的材质更换为耐热性能更好的1Cr18Ni12Ti。改进方案实施后,主蒸汽温度提高了10℃左右,减温水使用量减少约7 t/h,屏式过热器局部超温的问题得到解决,年节约用煤123万元,并且该改进方案比全部换管材节省费用约448万元,取得了显著的经济性和安全性。 The main steam temperature on the low side and the platen superheater excess temperature in the 670 tan boiler of Shentou No. 2 Power Generation Co., Ltd is described.＇ The experimentation characteristic of wall-temperature of the platen superheater is summed up and the outstanding rule of main steam temperature on the low side is analyzed after cleaning up the deposition of coal economizer. Finally, the project of the local material of platen superheater replaced by 1Crl8Nil2Ti is advanced. Putting the project in practice, the main steam temperature increases 10 ℃ and the desuperheater spray decreases 7 tan. The coalburning fee saves 1 230 000 Yuan in a year and the amelioration saves 4 480 000 yuan compared to replacing the material of platen superheater entirely. The platen superheater excess temperature is resolved and the better economical efficiency and nicer security are gained.

关 键 词： 屏式过热器 汽温偏低 超温 减温水量

领　　域： [动力工程及工程热物理]