超超临界机组水汽质量控制研究  

Research on Steam-Water Quality Control for Ultra-Supercritical Power Plant

作　　者：李少杰 谈群兴 LI Shaojie;TAN Qunxing(China Energy Engineering Group Guangdong Electric Power Design Institute Co.,Ltd.,Guangzhou 510663,China)

机构地区：[1]中国能源建设集团广东省电力设计研究院有限公司,广州510663

出　　处：《南方能源建设》2021年第3期109-113,共5页Southern Energy Construction

基　　金：中国能建广东院科技项目“大容量高效超超临界发电关键技术研究及应用”(EV01041W)。

摘　　要：[目的]超超临界机组是国内发电主力机组,对水汽质量要求严格,文章提出水汽质量控制措施以防止热力系统产生结垢和腐蚀,保证机组安全经济运行。[方法]为控制超超临界机组水汽质量,应该选择恰当的除盐水生产工艺、可靠的凝结水精处理系统、采取给水加氧处理(OT)、设置合理的在线监测表计、选择合适的凝汽器管材及做好停炉保护。[结果]以上措施可以有效防止热力系统产生结垢和腐蚀,保证机组安全经济运行。[结论]超超临界参数机组水汽质量可参考《火力发电机组及蒸汽动力设备水汽质量》(GB/T 12145—2016),并推荐按期望值进行控制。[Introduction]The ultra-supercritical unit is the main power generation unit in China,which has strict requirements on water steam quality.In this paper,water steam quality control measures have been proposed to prevent scaling and corrosion of the thermal system and ensure safe and economic operation of the unit.[Method]To control the steam-water quality of ultrasupercritical units,proper demineralized water production process,reliable condensate polishing system,feedwater oxygenation treatment(OT),reasonable on-line monitoring meter,appropriate condenser pipe and shutdown protection were selected.[Result]The above measures can effectively prevent scaling and corrosion of the thermal system and ensure the safe and economic operation of the unit.[Conclusion]The steam-water quality control of ultra-supercritical parameters units can refer to the Water Vapor Quality of Thermal Power Units and Steam Power Equipment(GB/T 12145—2016),and it is recommended to control the Parameters according to the expected value.

关 键 词：热力系统 超超临界 水汽质量 火力发电厂 

分 类 号：TM611[电气工程—电力系统及自动化] TM621.8