火力发电在过去、现在和将来相当长一段时间内都将是我国电源结构的绝对主力。火电机组蒸汽参数的提高是降低煤耗、减少排放和提高机组热效率的重要手段。目前我国火电机组以亚临界参数机组为主体,大力发展超(超)临界机组是优化我国电源结构和实现节能减排战略目标最重要的措施 Thermal power generation in the past, now and in the future for a long period of time will be the absolute power of China’s main structure. The improvement of steam parameters of thermal power units is an important means to reduce coal consumption, reduce emissions and improve thermal efficiency of generating units. At present, China’s thermal power generation units to the subcritical unit as the main body, to develop ultra (super) critical unit is to optimize China’s power structure and achieve the strategic goal of energy-saving emission reduction the most important measures