华电技术 ›› 2015, Vol. 37 ›› Issue (5): 74-76.

• 节能与环保 • 上一篇    

300MW锅炉效率低的原因分析

  

  1. 1. 清华大学 热能工程系, 北京 100084; 2. 华电国际技术服务中心, 济南 250014

  • 出版日期:2015-05-25 发布日期:2015-10-08

Analysis on reasons of low boiler efficiency of a 300 MW unit

  1. 1. Department of thermal engineering,tsinghua university, beijing 100084, china; 2. Huadian power international technical service center, jinan 250014, china

  • Online:2015-05-25 Published:2015-10-08

摘要:

摘 要: 针对某300MW锅炉效率偏低的问题, 通过锅炉效率试验风机效率试验空气预热器漏风率试验氧量表计标定试验及氧量场标定试验, 最终确定了锅炉效率偏低的原因是空气预热器入口 氧量表计指示值偏低 将运行氧量降至1. 14% , 锅炉运行效率提高约0. 52个百分点, 厂用电率降低约0. 34 个百分点, 影响煤耗降低约2. 7 g/( kW· h)

关键词: 关键词: 锅炉, 效率, 氧量, 燃烧, 煤耗

Abstract:

Abstract:aiming at the problem of lower efficiency of a 300 mw boiler, some experiments were carried out, which include the boiler efficiency test, the draft fan efficiency test,he experiment of air leakage rate of the air preheater, the oxygen meter calibration test and the oxygen fileld calibration test.finally, the reason of lower boiler efficiency is that the indicated value of the oxygen meter in inlet of the air preheater was lower than the true value. The operation oxygen was reduced to 1. 14 % ,the boiler operation efficiency raised by 0. 52 percentage, the house power consumption rate reduced by 0. 34 percentage, and the coal consumption rate reduced by 2. 7 g/( kw· h) .

Key words:

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