摘要
某电厂630MW机组锅炉存在过热器减温水量偏大和排烟温度高于设计值的问题,严重影响机组的经济运行。对此,采取减少低温过热器及低温再热器吸热面积,将原有光管省煤器改为换热系数更高的H型省煤器等方案对锅炉受热面进行了改造。改造后600MW负荷下过热器减温水量下降了100t/h,排烟温度也达到了设计值,提高了锅炉运行的经济性和安全性。
Problems like excessive desuperheating water flow and over high exhaust temperature occurred in a 630MW unit boiler,which seriously affected the economic operation of the unit.In order to solve these problems,several countermeasures were taken,like decreasing the heating area of low-temperature superheater and low-temperature reheater,and replacing the economizer with bare tubes for the one with H-type tube which had higher heat transfer coefficient.After the adjustment,the desuperheating water flow dropped by 100t/h,and the exhaust temperature also reached the design value.
出处
《热力发电》
CAS
北大核心
2013年第10期103-106,共4页
Thermal Power Generation
关键词
630
MW机组
锅炉
减温水
排烟温度
锅炉效率
boiler
heating surface
superheater
reheater
economizer
desuperheating water
exhaust temperature
boiler efficiency
