华电技术 ›› 2018, Vol. 40 ›› Issue (11): 57-58.

• 技术交流 • 上一篇    下一篇

降低燃气锅炉除氧器排汽损失的措施

  

  1. 杭州华电下沙热电有限公司,杭州〓310018
  • 出版日期:2018-11-25 发布日期:2018-12-29

Measures to reduce the exhaust loss of gas boiler deaerator

  1. Hangzhou Huadian Xiasha Thermal Power Company Limited, Hangzhou 310018, China
  • Online:2018-11-25 Published:2018-12-29

摘要:

除氧器排汽损失占燃气锅炉蒸汽总损失的87.69%,为提高燃气锅炉供热运行的经济性,需采取措施降低除氧器排汽损失。通过分析,确认除氧器进水量过小或过大均会导致除氧器排汽损失率增大,采取低负荷时只用底部进汽加热给水,高负荷时用底部进汽辅助顶部进汽加热给水的措施,有效降低了排汽损失率及燃气锅炉气热比,每年可节约天然气成本约72万元。

关键词:

Abstract:

The exhaust loss of deaerator accounts for 87.69% of the total steam loss of gas boiler. In order to improve the economic efficiency of gas boiler in heating operation, measures should be taken to reduce the deaerator exhaust loss. Through analysis, it is confirmed that both excessive and lacking intake water will lead to an increase of deaerator exhaust loss rate. When the load is low, feeding water is heated by admission from the bottom. When the load is high, the feeding water is heated mainly by admission from the top and assisted by admission from the bottom. The measures effectively reduce the exhaust gas loss rate and the gasheat ratio of the gas boiler, and the annual natural gas cost can be saved by about 720000 yuan.

Key words: