中国电力 ›› 2012, Vol. 45 ›› Issue (11): 32-35.DOI: 10.11930/j.issn.1004-9649.2012.11.32.3

• 发电 • 上一篇    下一篇

DG2070/17.5-Ⅱ6型锅炉受热面改造技术研究

方占岭   

  1. 大唐国际发电股份有限公司,北京 100033
  • 收稿日期:2012-06-08 出版日期:2012-11-18 发布日期:2016-02-29
  • 作者简介:方占岭(1962-),男,内蒙古察右前旗人,高级工程师,从事发电企业安全生产管理与火力发电厂运行技术研究。

Retrofit of Heating Surfaces for DG2070/17.5-Ⅱ6 Type Boiler

FANG Zhan-ling   

  1. Datang International Power Generation Co., Ltd., Beijing 100033, China
  • Received:2012-06-08 Online:2012-11-18 Published:2016-02-29

摘要: 针对DG2070/17.5-Ⅱ6型亚临界自然循环锅炉存在的过热器、再热器减温水量严重超标,严重影响机组安全性和经济性的问题,从其尾部受热面的结构特性分析出发,提出了适当减少低温过热器和低温再热器受热面面积,增加省煤器受热面面积的可行性改造方案,并在某电厂的机组上进行了具体实施,从改造效果来看,过热器和再热器的减温水量大幅度减少,提高了机组运行的安全性和经济性。

关键词: 火力发电机组, 过热器, 再热器, 受热面改造

Abstract: To decrease the extra large amount of desuperheating water in the superheaters and reheaters of the subcritical natural-circulating boiler of the Model DG2070/17.5-Ⅱ6 which severely affects the security and economics of the unit, a feasible plan is put forward based on the analysis on the structural characteristics of the heat recovery surfaces, which includes reducing the heating area of the low-temperature superheaters and the low-temperature reheaters, and increasing the heating area of the economizer adequately. The plan is put into practice at a power plant, which indicates that the amount of the desuperheating water in the superheaters and the reheaters is decreased by a big margin with the security and economics of the boilers being improved.

Key words: thermal power unit, superheater, reheater, heating surface retrofit

中图分类号: