火电机组通流部件抗蒸汽氧化涂层技术发展与展望  被引量:1

Progress in the development of high temperature coatings for protection of power generation steam components

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作  者:鲁金涛[1] 黄锦阳[1] 杨珍[1] 袁勇[1] LU Jintao;HUANG Jinyang;YANG Zhen;YUAN Yong(National Engineering Research Center of Integration and Maintenance of Clean and Low-carbon Thermal Power Generation System,Xi’an Thermal Power Research Institute Co.,Ltd.,Xi’an 710054,China)

机构地区:[1]西安热工研究院有限公司清洁低碳热力发电系统集成及运维国家工程研究中心,陕西西安710054

出  处:《热力发电》2023年第10期13-24,共12页Thermal Power Generation

基  金:国家自然科学基金项目(52271070);中国华能集团有限公司总部科技项目(HNKJ20-H41,TA-20-TYK03)。

摘  要:长期以来,火电机组蒸汽侧的氧化皮问题是导致锅炉堵管、爆管等事故的主要安全隐患,尤其是随着先进超超临界火电技术的发展,更高蒸汽参数下火电机组面临的氧化皮问题将更加严峻。高温涂层技术为解决这一问题开辟了新的方法和思路,不仅能够满足苛刻服役环境下耐热钢对抗高温蒸汽氧化性能的需求,还可释放耐热钢因抗氧化不足而降档使用的温限,在能源系统领域中具有巨大的应用潜能。简述了欧盟、美国及国内的多个超(超)临界火电机组通流部件抗蒸汽氧化涂层技术的研发计划,重点综述了当前抗蒸汽氧化涂层设计策略及使役性能研究进展,提出了制约铝化物涂层在火电机组规模化应用的基础研究和工程应用问题,展望了高温铝化物涂层技术服役于超超临界电站锅炉复杂材质耐热钢管的应用前景。The blockage and burst failure of steam tubes caused by exfoliated oxide scales is the major risk faced by supercritical boiler in thermal power generations.With the development of advanced ultra-supercritical thermal power technology,especially,more severe oxidation scale problems will carry over into the higher steam parameters thermal power plants.High temperature coating technology shows a new research methods and approaches in solving exfoliated oxide scale problems.It can not only satisfy the performance requirements of heat resistant steel to high temperature steam oxidation resistant in harsh service environment,but also release the temperature limit of currently used heat-resistant steels due to its inadequate oxidation resistance,which has great application potential in the energy sector.The R&D plans of steam oxidation resistant coatings for steam flow parts of ultra-supercritical thermal power units in the EU,the United States and China are briefly described.The current research progress in preparation and service performance of these coatings is emphatically introduced.The basic research and engineering application issues restricting the large-scale application of aluminide coatings in thermal power units are proposed.And the application prospect of high temperature aluminide coating technology for complex heat�resistant steel tubes of ultra-supercritical power plant boiler is prospected.

关 键 词:超超临界 高温涂层 锅炉管 蒸汽氧化 铝化物涂层 

分 类 号:TM621[电气工程—电力系统及自动化]

 

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