摘要
提高给水温度是提高机组运行循环热效率的重要手段。以某电厂1 000 MW二次再热机组为例,通过全开#1高压加热器进汽调节阀及其旁路电动阀可提高各负荷段的给水温度,同时提高低负荷段脱硝装置入口的烟气温度。该运行调节不仅提升了机组运行的经济性,还有利于降低脱硝装置投运的负荷下限。
Increasing feedwater temperature is an important means to improve the thermal efficiency of unit operation cycle. Taking a 1 000 MW double reheat unit in a power plant as an example,by fully opening the steam admission control valve and bypass electric valve for the No. 1 high pressure heater,the feedwater temperature at each load increased,and so did the flue gas temperature at denitrification device inlet. This operation mode can not only improve the economy of the unit,but also reduce the lower load limit of the denitration device.
作者
徐江
赵志发
李军
XU Jiang;ZHAO Zhifa;LI Jun(China Energy Group Taizhou Power Generation Company Limited,Taizhou 225327,China)
出处
《华电技术》
CAS
2020年第1期78-80,共3页
HUADIAN TECHNOLOGY
关键词
给水温度
经济性
高压加热器
进汽调节阀
旁路电动阀
部分负荷运行
feedwater temperature
economy
high pressure heater
steam admission control valve
bypass electric valve
partial load mode operation
