| To conserve energy, improve the thermal efficiency and reduce environmental pollution, we must vigorously develop the ultra-supercritical technology for power generation.Ultra-supercritical thermal power units after several decades of development, has advanced power generation is a mature technology, the economy and the widespread application of the developed countries have significant energy-saving and pollution reduction effects, and is further higher parameters direction.The current foreign Ultra-supercritical thermal units to a thermal efficiency of up to 43% above normal, the second reheat unit thermal efficiency reached 45% and above. Ultra-supercritical thermal power unit reliability and operational flexibility have also reached a sub-critical unit level. The conservation of coal resources, the economy of generating units and improve the environment, have demonstrated superiority.Accelerate the development of supercritical units, optimize thermal unit structure, can greatly improve the efficiency of coal use and improve the economic efficiency of enterprises and generating competitiveness, lower domestic coal consumption growth slowed C02, NOX emissions growth, in order to ensure the economy sustainable development is the state' s industrial policy actively encouraged by the development projects.Huadian Zibo Plant to be building 2×1000MW level coal-fired units has strong advantages. High parameters, large capacity, high-efficiency advantages of the technology leader in load centers, in line with the state coal-fired power station project planning and construction requirements, the state encourages the development of the project. At the same time, its construction will effectively promote Shandong Power industrial upgrading. Shandong Province to optimize the thermal power supply structure is conducive to environmental protection. In a comprehensive analysis of the economic and security units on the basis of reliability, the current project 2×1000MW rating units used parameters moderate, parameter identified as 25 MPa/600℃/600℃heat once again among units.In this paper, the parameters of units at home and abroad, the operation of the 2×1000MW coal-fired units boiler, turbine selection were analyzed.To ensure the safe and reliable auxiliary and operational flexibility from the system is safe and reliable, design energy-saving, water-saving, the choice of the main auxiliary conducted, in order to support the safe operation of mainframe. |
