超临界二氧化碳循环应用于火力发电的研究现状
Current Status of Research on the Application of Supercritical Carbon Dioxide Power Cycle in Fossil Fired Power Generation
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摘要:
超临界二氧化碳动力循环(sCO2循环)系统简单、结构紧凑、效率高，可与采用化石燃料燃烧方式的热源结合，形成先进的火力发电系统。sCO2循环有间接加热和直燃加热两种方式，前者可采用燃煤锅炉间接加热获得热能，后者可采用燃气直接燃烧获得热能。基于对当前国内外的研究现状的文献调研，可以得出结论：sCO2循环可应用于火力发电，并有望开发大型的清洁、高效火力发电系统，突破传统火力发电技术发展瓶颈。 Abstract:Supercritical carbon dioxide power cycle (sCO2 cycle) is characterized of its simple system, compact structure and high efficiency, and can be coupled with fossil fired heat source to form advanced fossil fired power generation system. The sCO2 cycle has two types, i. e. indirectly heated and direct-fired cycle, and the former can use coal fired furnace as heat source, and the latter can use gas combustor as heat source. Based on the current status of research and development of sCO2 cycle throughout the world, it is concluded that sCO2 cycle can be applied to fossil fired power generation, and it is expected that large-scale clean and high-efficiency power generation system can be developed in the near future so as to overcome the development bottleneck of conventional fossil fired power generation technology.
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