电站锅炉燃用高碱煤的高温腐蚀机理研究及预防措施  

Research on high-temperature corrosion mechanism of high-alkali coal combusted in power station boilers and preventive measures

作　　者：杜宝仓 马国伟 周磊 王世民 DU Baocang;MA Guowei;ZHOU Lei;WANG Shimin(State Key Laboratory of Low-carbon Smart Coal-fired Power Generation and Ultra-clean Emission,National Energy Group Science and Technology Research Institute Co.,Ltd.,Yinchuan,Ningxia 750002,China)

机构地区：[1]国家能源集团科学技术研究院有限公司(低碳智能燃煤发电与超净排放全国重点实验室),宁夏银川750002

出　　处：《宁夏电力》2024年第6期80-84,90,共6页Ningxia Electric Power

基　　金：国家能源投资集团科技项目(GJNY-24-38)。

摘　　要：针对某电站锅炉掺烧新疆高碱煤后水冷壁减薄速率过快导致爆管泄漏问题,通过对炉内水冷壁整体外观检查、金相分析及入炉煤质化验结果,确定为典型的硫酸盐型高温腐蚀。根据分析结果从入厂煤管理、配煤掺烧、运行优化及检修管理方面提出相应的调整和预防控制措施。通过1个检修季的对比分析结果,腐蚀速率已得到有效控制。This study addresses the rapid thinning of the water-cooled wall in a power station boiler,leading to pipe leakage when blending Xinjiang high-alkali coal.A comprehensive inspection of the furnace’s water-cooled wall,along with metallurgical analysis and coal quality testing results,identifies the issue as typical high-temperature corrosion of the sulfate type.Corresponding adjustments and preventive control measures are proposed,focusing on the management of incoming coal,coal blending,operational optimization,and maintenance management.Comparative analysis over one maintenance season indicates that the corrosion rate has been effectively controlled.

关 键 词：电站锅炉 硫酸盐型 高温腐蚀 预防措施 

分 类 号：TM621.2[电气工程—电力系统及自动化]