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超(超)临界机组的突出特点是效率高,单台机组的供电效率可比亚临界机组高2%~6%,机组配套应用低NO_X燃烧、脱硫、脱硝等技术后,排放到大气中的CO_2、SO_2、NO_x均比亚临界机组大幅减少。我国电力行业的发展方向是优化电源结构,而发展超(超)临界机组是火电自身结构优化的主要途径。超(超)临界锅炉的主要关键技术是锅炉用新型耐热钢及其加工工艺。超(超)临界锅炉对承压部件、与汽机相连管道的安全性和可靠性方面提出了更高的要求。在安装阶段,施工现场的环境、技术条件相对较差,质量控制工作往
The prominent features of the supercritical unit are high efficiency, single unit power supply efficiency can be 2% to 6% higher than the subcritical unit, the unit supporting the application of low NO_X combustion, desulfurization, denitrification and other technologies, the emissions to the atmosphere of CO_2 , SO_2, NO_x are significantly lower than the subcritical units. The development direction of China’s power industry is to optimize the power structure, and the development of super (super) critical units is the main way to optimize the thermal power structure. The main key technology of super (super) critical boilers is the new heat-resistant steel for boilers and its processing technology. Super (super) critical boilers put forward higher requirements on the safety and reliability of pressure-receiving parts and pipes connected to steam turbines. In the installation phase, the construction site environment, the technical conditions are relatively poor, quality control work to