中国电力 ›› 2013, Vol. 46 ›› Issue (6): 1-4.DOI: 10.11930/j.issn.1004-9649.2013.6.1.3

• 发电 •    下一篇

干、湿式除渣系统对锅炉效率影响的研究

许华, 张华伦, 王仕能, 党楠   

  1. 中国电力顾问集团 西南电力设计院,四川 成都 610021
  • 收稿日期:2013-03-15 出版日期:2013-06-05 发布日期:2015-12-15
  • 作者简介:许华(1962—),男,四川富顺人,高级工程师(教授级),副主任工程师,从事火电厂除灰系统技术设计、研究以及管理工作。E-mail: xuh1217@163.com

Study on the Impact of Dry and Wet Bottom Ash Handling Systems on Boiler Efficiency

XU Hua, ZHANG Hua-lun, WANG Shi-neng, DANG Nan   

  1. Southwest Electric Design Institute of China Power Engineering Consulting Group, Chengdu 610021, China
  • Received:2013-03-15 Online:2013-06-05 Published:2015-12-15

摘要: 风冷干式除渣系统对锅炉效率的影响目前尚存争议,缺少权威定论。通过为期3年的对干式除渣系统的研究,建立了锅炉效率、炉渣冷却风量等参数的数学模型,结合对某电厂1 000 MW锅炉干式除渣系统的运行测试,得出干式除渣系统在多数情况下影响锅炉燃烧、降低锅炉效率;干式除渣系统比湿式除渣系统对锅炉燃烧及效率的影响更大;易结焦煤不宜采用干式除渣系统;当电厂燃煤煤质变化较大时,应慎重采用干式除渣系统等结论。

关键词: 干式除渣系统, 湿式除渣系统, 锅炉效率

Abstract: So far the impacts of air-cooling dry-type bottom ash handling system on boiler efficiency are still controversial and very few authoritative conclusions have been drawn. After three years’ research on the system, the mathematical models including boiler efficiency and cooling air volume are established. Combining with the tests conducted in two 1 000-MW boilers of one power plant, it is concluded that the dry-type bottom ash handling system does have impacts on boiler combustion and lower the boiler efficiency under most circumstances. In addition, the impacts of the dry-type bottom ash handling system are greater than those of the wet-type system. The easy-cooking coal is not a suitable choice for the boilers with dry-type system. If the coal quality of the power plant fluctuates drastically, it is critical to choose the dry-type system meticulously.

Key words: dry-type ash handling system, wet-type ash handling system, boiler efficiency

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