Electric Power ›› 2017, Vol. 50 ›› Issue (6): 6-11.DOI: 10.11930/j.issn.1004-9649.2017.06.006.06

• Double-Reheat Coal-Fired Power Generation Technology • Previous Articles     Next Articles

Double-Reheat Coal-Fired Power Generation Technologies for 1 000-MW Ultra-Supercritical Units

GAO Song1, ZHAO Jie2, HUANG Dinan3   

  1. 1. China Guodian Corporation, Beijing 100034, China;
    2. China Energy Engineering Group Co., Ltd., Beijing 100022, China;
    3. Shanghai Electric Group Company Limited, Shanghai 200233, China
  • Received:2017-03-20 Online:2017-06-20 Published:2017-07-12
  • Supported by:
    ; This work is supported by the National Key Technology Support Program (No. 2012BAA12B00).

Abstract: To save primary energy, enhance environmental protection, reduce greenhouse gas emissions and improve the economic performance of power generation units, the Units 3 and 4 of Guodian Taizhou Power Plant Phase Ⅱ Project are independently developed, designed, manufactured and constructed as the demonstrative project of 1 000-MW ultra-supercritical coal-fired power generation technologies with double reheat cycles. This paper presents the general technical plans from the aspects of main parameter selection, boiler and steam turbine development, thermal system optimization, environmental protection technique integration and automatic control system development. The operation of the two units shows that the efficiency of the units have reached as high as 47.81% and 47.95% with the net coal consumption of 266.57 g/(kW·h) and 265.75 g/(kW·h) respectively. At the same time, the dust, SO2 and NOx emission concentrations have been reduced lower than 5 mg/m3, 35 mg/m3 and 50 mg/m3 under the standard state, meeting and being better than the requirements of ultra-low emission. The successful commission and stable operation of the demonstrative project has laid solid foundation for the future development of clean coal-fired power generation technologies with higher parameters and better efficiency, accumulated valuable experience for the construction of the units of the same type and improved the competitiveness of China’s coal-fired power generation technologies in the international market.

Key words: coal-fired power generation, 1 000 MW, ultra-supercritical unit, double reheat cycle, demonstrative project

CLC Number: