Advancements in supercritical (SC), ultrasupercritical (USC), and advanced USC coal-fired power plants have been achieved through the development of enhanced materials utilized in advanced steam cycles and through the deployment of advanced emission control systems. These are referred to as high-efficiency low-emission (HELE) technologies, which may solve numerous issues associated with coal-based power generation. There is a clear global transition from subcritical to advanced power plant types and significant R&D work on HELE technologies. Therefore, this comprehensive review covers the latest HELE technology deployment in major coal-consuming countries and their R&D roadmaps to advance HELE technologies. In spite of the various advantages of HELE technologies, there have been numerous technical challenges relevant to achieving the HELE steam conditions and deploying low emission control technologies in the HELE systems. Hence, this review covers the technical challenges and the relevant recent research by using various coal combustion test facilities. The current focus for the progression from USC boilers to advanced USC boilers is a successful demonstration of the developed high-performance alloys under the advanced steam conditions. This review covers the current status of research and development of advanced USC (A-USC) materials and challenges based on the major material research programs.

中文翻译：

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先进燃煤电厂高效低排放技术综合技术评价

超临界 (SC)、超超临界 (USC) 和先进的 USC 燃煤电厂的进步是通过开发用于先进蒸汽循环的增强材料和部署先进的排放控制系统来实现的。这些被称为高效低排放 (HELE) 技术，可以解决与燃煤发电相关的许多问题。从亚临界到先进的发电厂类型和 HELE 技术的重大研发工作明显在全球范围内过渡。因此，本次全面审查涵盖了主要煤炭消​​费国的最新 HELE 技术部署及其推进 HELE 技术的研发路线图。尽管 HELE 技术具有各种优势，在实现 HELE 蒸汽条件和在 HELE 系统中部署低排放控制技术方面存在许多技术挑战。因此，本综述涵盖了使用各种燃煤试验设备所面临的技术挑战和相关的最新研究。目前从 USC 锅炉向先进 USC 锅炉发展的重点是在先进蒸汽条件下成功展示开发的高性能合金。本综述涵盖了基于主要材料研究计划的先进 USC (A-USC) 材料的研发现状和挑战。本综述涵盖了使用各种燃煤试验设备所面临的技术挑战和相关的最新研究。目前从 USC 锅炉向先进 USC 锅炉发展的重点是在先进蒸汽条件下成功展示开发的高性能合金。本综述涵盖了基于主要材料研究计划的先进 USC (A-USC) 材料的研发现状和挑战。本综述涵盖了使用各种燃煤试验设备所面临的技术挑战和相关的最新研究。目前从 USC 锅炉向先进 USC 锅炉发展的重点是在先进蒸汽条件下成功展示开发的高性能合金。本综述涵盖了基于主要材料研究计划的先进 USC (A-USC) 材料的研发现状和挑战。