1 000 MW超超临界二次再热燃煤发电示范工程总体设计方案

为促进节能减排,建设了国电泰州电厂二期工程作为1 000 MW超超临界二次再热燃煤发电机组的示范工程。结合国内现有燃煤发电机组技术水平,在比较分析国外二次再热机组的基础上,提出了示范工程总体方案所涉及的主机参数选择、主机选型、热力系统拟定、辅机选型以及大气污染物治理方案。示范工程投运以后,2台机组供电煤耗分别为266.57 g/（kW·h）和265.75 g/（kW·h）,烟尘、SO₂和NO_x的排放浓度在标准状态下分别低于5 mg/m³、35 mg/m³和50 mg/m³,为中国建设更加高效和清洁的火力发电厂起到重要的参考和示范意义。

General Design of 1 000-MW Ultra-Supercritical Double-Reheat Demonstration Power Plant

In order to promote the energy saving and emission reduction, the Guodian Taizhou Power Plant Phase Ⅱ Project is built as the demonstration project of 1 000-MW ultra-supercritical double-reheat coal-fired power generation units. In combination with the current technical levels of domestic coal-fired power plants and based on the comparison and analysis of foreign double-reheat coal-fired power generation units, this paper elaborates the selections of steam parameters and main equipments, the thermal system design, the auxiliary equipment selection and the air pollutant prevention design, etc. The practical operation of the demonstration project shows that the net coal consumption of the two units of this project has reached 266.57 g/(kW·h) and 265.75 g/(kW·h) respectively, while the dust, SO₂ and NO_x emission concentrations are lower than 5 mg/m³, 35 mg/m³ and 50 mg/m³ respectively in standard state, indicating that the project has played a good referential and demonstrative role for the efficient and clean coal-fired power generation construction.