摘要
尽可能提高电厂效率,大力发展超超临界燃煤火电技术,是当前降低火电CO2排放最现实、最可行、最经济、最有效的途径。实现700℃超超临界技术的关键是开发能够在蒸汽温度700℃条件下长期安全运行的高温金属材料,这些材料必须要具有:(1)耐高温的持久强度;(2)耐烟气侧的高温腐蚀;(3)抗蒸汽侧氧化及氧化层剥落;(4)良好的抗热疲劳性能。为此,介绍了欧盟AD700和COMTES700等计划,以及美国和日本的700℃超超临界计划对高温材料研发的最新进展,其中包括材料试验、高温材料部件挂炉试验结果和示范厂计划。与此同时,还就高温金属材料用于700℃超超临界机组的制约因素的解决方案进行了探讨。
The most practical, feasible, economic, effective methods for CO2 emission reduction in power plant are to improve the efficiency of power plants as far as possible and develop ultra-supercritical coal-fired thermal power technology. The key to realize 700℃ ultra-supercritical technology is the development of high-temperature metallic materials with long- term safe operation in 700℃ steam. And these materials must have the characteristics ： （ 1 ） creep rupture strength at high temperature ; （2） being resistant to high-temperature corrosion of flue gas ; （3） antioxidation of steam side and oxide layer spalling ; （4） good behavior of thermal fatigue resistance. This paper introduced the EU ADT00 and COMTEST00 programs and the latest development of high-temperature metallic materials in 700℃ ultra-supercritical technology in America and Japan, including material test, high temperature metallic materials test in furnace and demonstration program. In addition, bottlenecks, constraints, as well as solutions of high-temperature metallic materials used in 700℃ ultra-supercritical units were discussed.
出处
《电力建设》
2013年第8期69-76,共8页
Electric Power Construction
关键词
700℃超超临界技术
高温金属材料
CO2减排
700℃ ultra-supercritical technology
high-temperature metallic materials
CO2 emission reduction
