超临界二氧化碳工质发电系统候选材料高温腐蚀研究现状与进展  

Research status of high temperature corrosion of candidate materials for power generation system using supercritical carbon dioxide as working fluid

作　　者：肖博 朱忠亮[1] 李瑞涛 张乃强[1] XIAO Bo;ZHU Zhongliang;LI Ruitao;ZHANG Naiqiang(Key Laboratory of Condition Monitoring and Control for Power Plant Equipment of Ministry of Education,North China Electric Power University,Beijing 102206,China)

机构地区：[1]华北电力大学电站设备状态监测与控制教育部重点实验室,北京102206

出　　处：《热力发电》2020年第10期30-37,共8页Thermal Power Generation

基　　金：国家重点研发计划项目(2017YFB0601804)。

摘　　要：近年来,采用高温超临界二氧化碳(S-CO2)作为工质构建新型布雷顿循环,建立超高参数、超高效率、结构紧凑的发电动力系统,在燃煤火电、核电、太阳能热发电等领域具有良好的应用前景。金属管道和部件在高温S-CO2环境中的抗高温腐蚀性能是该新型动力系统建设的瓶颈问题之一。本文综述了候选材料铁素体/马氏体耐热钢、奥氏体不锈钢、高温镍基合金在高温S-CO2环境中的腐蚀研究现状,探究了S-CO2环境下的氧化-碳化耦合机理,给出了S-CO2环境腐蚀亟需解决的问题,提出了合理抑制碳化腐蚀的方法,指明了S-CO2腐蚀的研究发展方向和趋势。In recent years,using high-temperature supercritical carbon dioxide(S-CO2)as working medium to build a new Brayton cycle and establish a power system with ultra-high parameters,super high efficiency and compact structure shows good application prospects in such fields as coal-fired power generation,nuclear power generation,and solar thermal power generation.The corrosion resistance of metal pipes and components in high temperature S-CO2 environment is one of the key issues in establishment of the new power system.In this paper,researches on the corrosion of candidate materials such as ferrite/martensitic,austenitic stainless steel and high-temperature nickel-based alloys in high-temperature S-CO2 environment is reviewed.The oxidation-carbonation coupling mechanism in S-CO2 environment is explored.The problems need to be solved urgently incorrosionin hightemperature S-CO2 environment are put forward,and a method to reasonably inhibit carbonation corrosion is proposed,which points out the research direction and trend of high-temperature S-CO2 corrosion.

关 键 词：高温腐蚀 超临界二氧化碳 铁素体/马氏体钢 奥氏体钢 镍基合金 氧化-碳化耦合 碳化腐蚀 

分 类 号：TK224.9[动力工程及工程热物理—动力机械及工程]