燃煤电厂SCR烟气脱硝技术的应用及发展_马东祝.pdf

第30 卷第3 期 煤 炭 技 术 Vol.30,No.03 2011 年3 期 Coal Technology March,2011 燃煤电厂SCR 烟气脱硝技术的应用及发展 马东祝，张 玲，李树山，尹 迪 （河北工业职业技术学院，石家庄050091） 摘 要:介绍了燃煤电厂SCR 烟气脱硝技术的基本原理和应用现状，讨论了该技术的应用效果、设计运行经验及发 展方向。结果发现，SCR 烟气脱硝技术具有成熟和可靠的工艺，易于控制，运行安全可靠，不会造成二次污染，虽然 初期投资成本较高，但脱硝效率高、运行成本比较低，是一种比较适合燃煤锅炉的烟气脱硝技术。 关键词:SCR；燃煤电厂； 烟气脱硝 中图分类号:TM62 文献标识码:A 文章编号:1008-8725 （2011）03-0005-03 Application and Development of SCR Denitration Technology in Coal-fired Power Plant MA Dong-zhu, ZHANG Ling, LI Shu-shan, YIN Di （Hebei College of Industry and Technology, Shijiazhuang 050091, China） Abstract:Through an introduction of application and basic principles of SCR denitration technology in coal-fired power plant, its effectiveness, experience of design and operation, and development have been discussed. The results show that the SCR denitration technology has mature and reliable technology. It is easy to be controlled. Its operation is safe and reliable. It will not cause secondary pollution. Although the initial investment cost is higher, the denitrification efficiency is higher and running costs is relatively lower. So far it is more suitable technology for denitration in coal-fired power plant. Key words:SCR; coal-fired power plant; flue gas denitrifi cation 111111111111111111111111111111111111111111111 价之别，而只有+2 价的才能继续与NO 发生配位反应。 温度的升高很有可能将+2 价络合物转化为+3 价，不 利于后续反应的进行。另外，有研究表明，低温比较有 利于+2 价硝酰配合物的形成。由此可知，室温（19°C） 是比较合理的反应温度。 图5 pH 值对NO 脱除率的影响 除率甚至会有所降低。这可能是因为氯离子本身对 于过渡金属钴来说也是一个配位基团，当pH 值比