• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2014, Vol. 35 ›› Issue (5): 84-87.doi: 10.3969/j.issn.1000-7229.2014.05.014

• 发电技术 • 上一篇    下一篇

循环流化床锅炉大直径钟罩式风帽优化

黄中1,张述国2   

  1. 1.中国华能集团清洁能源技术研究院有限公司,北京市 102209;2.大唐黑龙江发电有限公司,哈尔滨市 150028
  • 出版日期:2014-05-01
  • 作者简介:黄中(1983),男,博士研究生,高级工程师,主要从事循环流化床锅炉技术、低质煤清洁发电技术研究开发,E-mail:chinacfb@gmail.com; 张述国(1971),男,学士,工程师,长期从事电力基本建设相关工作。
  • 基金资助:

    “十二五”国家科技支撑计划项目(2012BAA02B02)

Optimization of Large-Diameter Bell-Type Air Cap in CFB Boiler

HUANG Zhong1, ZHANG Shuguo2   

  1. 1. Huaneng Clean Energy Research Institute Co., Ltd., Beijing 102209, China;2.Datang Heilongjiang Power Generation Co., Ltd., Haerbin 150028, China
  • Online:2014-05-01

摘要:

某循环流化床(circulating fluidized bed,CFB)锅炉使用的大直径钟罩式风帽出现了大面积的整体错位、外罩磨损、小孔堵塞和芯管断裂问题,由此引起布风板阻力分区和流化不良,多次发生漏渣、结焦等恶性事故,严重影响锅炉的正常运行。现场检查发现检修及安装不当是造成风帽出现问题的主要原因,结合该厂锅炉运行情况设计了风帽改造方案,整体更换了新型风帽。改造后的运行结果显示,新设计安装的风帽结构新颖、阻力特性良好、便于检修维护。

关键词: 循环流化床(CFB)锅炉, 大直径钟罩式风帽, 磨损, 漏渣, 改造

Abstract:

 A large area of overall dislocation, cover wear, holes plugging and inner core tube rupture occurred at bell-type air cap with large diameter used in circulating fluidized bed (CFB) boiler in a power plant, which caused poor resistance partitions and fluidization of air distribution plate, slag leakage, coking and other accidents, so that seriously affected the normal operation of the boiler. Site inspection results show that the improper installation and maintenance is the main cause of these problems. Combined with the operation situation of boiler, the retrofit scheme was designed for the air caps, and all the air caps were replaced by the new type ones. The running results after retrofit show that the new type air caps have the characteristics of novel structure, better resistance and easy maintenance.

Key words: circulating fluidized bed(CFB) boiler, bell-type air cap with large diameter, wear, slag leakage, retrofit