热力发电2017，Vol.46Issue(8)：16-22,7.DOI:10.3969/j.issn.1002-3364.2017.08.016
百万等级超超临界二次再热机组整体经济性研究
Overall economical performance of 1000 MW class ultra-supercritical unit with double-reheat cycle
姚啸林 1付昶 1施延洲 1孟桂祥 1王安庆1
作者信息
- 1. 西安热工研究院有限公司,陕西西安 710054
- 折叠
摘要
Abstract
By analyzing the factors affecting the economical performance of 1000 MW class ultra-supercritical double-reheat units, combing with the case study on economical performance difference between the single-reheat units and double-reheat units, the actual performance of the double-reheat units was evaluated according to the performance acceptance test results of sample units. The results show that, as a result of series of optimizations to the regenerative system design, pipe pressure drop reduction, flue gas heat recovery, boiler efficiency enhancement and auxiliary power ratio reduction (besides the advantages of thermal cycle and parameters), the in-service 1000 MW class ultra-supercritical double-reheat units' design coal consumption rate is 5.7％ lower than that of the same scale single-reheat units. The application of double-reheat cycle, steam parameters improvement and regenerative system optimization greatly reduces the unit's heat rate, which is the major reason for overall performance improvement of the double-reheat units. The overall economical performance of domestic in-service 1000 MW class double-reheat units meets the design requirement, and has achieved the best level of coal-fired units at present.关键词
百万等级机组/超超临界/二次再热/整体经济性/一次再热/性能考核/性能优化/热耗率Key words
1000 MW class unit/ultra supercritical/double-reheat/overall economical performance/single reheat/performance acceptance/performance optimization/heat rate分类
能源科技引用本文复制引用
姚啸林,付昶,施延洲,孟桂祥,王安庆..百万等级超超临界二次再热机组整体经济性研究[J].热力发电,2017,46(8):16-22,7.
