华电技术 ›› 2013, Vol. 35 ›› Issue (2): 73-75.

• 节能与环保 • 上一篇    下一篇

燃煤电厂脱硫系统的脱汞特性研究

苏军划,陶爱平,沈煜晖   

  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:2013-02-25 发布日期:2013-02-25

Study on mercury removal characteristics of desulphurization systems in coalfired power plants

SU Junhua, TAO Aiping, SHEN Yuhui   

  1. China Huadian Engineering Corporation Limited, Beijing 100035, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2013-02-25 Published:2013-02-25

摘要: 介绍了燃煤电厂的湿法、半干法和干法脱硫系统对汞的脱除情况,分析了汞在不同脱硫系统中的转化过程及影响转化的因素。结果显示:由于脱汞机制不同,活性焦干法脱硫系统总的汞脱除效率最高,半干法次之,湿法最低。另外,对脱硫装置脱汞引起的汞二次污染问题也进行了探讨。

关键词: 燃煤电厂, 脱硫系统, 汞排放, 单质汞Hg0, 氧化态汞Hg2+

Abstract: The mercury removal situations in wet, semidry and dry desulphurization systems of coalfired power plants were introduced. The conversion processes of the mercury in different desulphurization systems and the factors influencing on the conversion were analyzed. The results show that due to the differences of the mercury removing mechanism, the activated coke dry desulphurization system has highest mercury removal efficiency; the semidry desulphurization system is in second place, and the mercury removal efficiency of the wet desulphurization system is lowest. In addition, the mercury secondary pollution caused by the mercury removal function of desulphurization equipments was discussed.

Key words: coal-fired power plant, desulphurization system, mercury emission, elemental mercury Hg 0, oxidation state mercury Hg 2+