摘要
针对N1000-25/600/600超超临界机组回热抽汽级数优化进行分析与研究,利用热平衡法及热力学方程,计算抽汽级数分别为8段和9段时回热系统热经济性。结果显示,相比于8段抽汽,9段抽汽的回热系统可使全厂热耗率降低285.12 kJ/(kW·h),全场发电标准煤耗率减少0.00976 kg/(kW·h),折合计算1台机组20年总收益,可增加2610.60万元。
The optimisation of the number of heat rejection stages of N1000-25/600/600 ultra-supercritical unit is analysed and investigated,and the thermal economy of the heat rejection system is calculated when the number of steam rejection stages is 8 and 9 respectively by using the heat balance method and thermodynamic equations.The results show that compared with the 8-stage extraction,the 9-stage extraction heat return system can reduce the heat consumption rate of the whole plant by 285.12 kJ/(kw-h),and the standard coal consumption rate of the whole site power generation by 0.00976 kg/(kw-h),which is equivalent to calculate the total revenue of one unit for 20 years,and can increase 26.1060 million Yuan.
作者
李颖杰
Li Yingjie(Taiyuan No.2 Thermal Power Plant,Datang Shanxi Power Generation Co.,Ltd.,Taiyuan Shanxi 030000,China)
出处
《现代工业经济和信息化》
2023年第9期282-284,287,共4页
Modern Industrial Economy and Informationization
关键词
超超临界
回热系统
抽汽级数
热经济
ultra-supercritical
heat return system
number of pumping stages
thermal economy
