华电技术 ›› 2012, Vol. 34 ›› Issue (9): 67-69.

• 节能与环保 • 上一篇    下一篇

燃煤电厂低温烟气余热利用的应用研究

沈煜晖,陶爱平,邓辉鹏   

  1. 中国华电工程(集团)有限公司,北京100035
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-09-25 发布日期:2012-09-25

Research on utilization of residual heat in lowtemperature flue gas of coalfired power plant

SHEN Yuhui, TAO Aiping, DENG Huipeng   

  1. China Huadian Engineering Corporation Limited, Beijing 100035, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-09-25 Published:2012-09-25

摘要: 针对火电厂烟气脱硫系统取消烟气换热器后存在的问题,提出了设置低温烟气热能回收装置的解决方案。该方案可解决烟气脱硫系统目前存在的烟气热能浪费、湿法脱硫系统水耗偏高、脱硫后湿烟囱无法安全运行等问题,可提高发电效率约0.3%或回收相当于4%发电量的低品质热能。

关键词: 湿法脱硫, 节能减排, 增压风机引风机合并, 湿烟囱, 烟气热能回收

Abstract: Aiming at the problems, which occurred in the desulphurization system of thermal power plant after its GGH was abolished, a solution proposed in this paper is to install a lowtemperature flue gas heat recovery device. The problems existing in present desulphurization systems can be solved including the waste of flue gas heat, the higher water consumption of the wet desulphurization, the unsafe operation of the wet smoke stack after desulphurization and others. In addition, using this solution, the power generation efficiency can be increased by about 0.3% or the lowquality heat equivalent to 4% of generated electricity can be recovered.

Key words: wet desulphurization, energy conservation and emission reduction, merging of boost fan and induced draft fan together, wet smoke stack, flue gas heat recovery