超超临界锅炉过热器受热面氧化皮脱落分析与治理  

Analysis and Treatment of Oxidation Skin Peeling on Heating Surface of Superheater in Ultra-supercritical Boiler

作　　者：许尧 朱子豪 XU Yao;ZHU Zi-hao(Guoneng Suzhou Thermal Power Co.,Ltd.;Guoneng Taizhou Power Generation Co.,Ltd.)

机构地区：[1]国能宿州热电有限公司 [2]国家能源集团泰州发电有限公司

出　　处：《电站系统工程》2023年第2期17-21,共5页Power System Engineering

摘　　要：锅炉热态运行,受热面内壁氧化膜生长形成氧化皮,因氧化皮和管材膨胀系数不同,在机组启停或停炉冷却过程中氧化皮容易受到应力作用脱落甚至堵塞受热面管,氧化皮脱落造成的超温爆管已经成为影响锅炉运行可靠性的重要因素。The boiler operates in hot state, the oxide film grows on the inner wall of the heating surface to form oxide skin,due to the oxidation of the skin and tube expansion coefficient is different, in the process of unit start-stop or furnace stop cooling, the oxide skin is easy to fall off or even block the heating surface tube by stress, the over-temperature tube burst caused by the peeling of oxide has become an important factor affecting the reliability of boiler operation.

关 键 词：过热器 氧化皮 生成分析 有效控制 

分 类 号：TK227[动力工程及工程热物理—动力机械及工程]