Abstract: The technology status and analysis on coal-fired flue gas denitrification were reviewed. The selective catalytic reduction (SCR)，selective non-catalytic reduction (SNCR)，SNCR-SCR and their industrialization status were analyzed，the new technologies for control NOx both at home and abroad were introduced，finally the development of the denitrification technology should be to develop the techniques with Chinese characteristics and enhance the development of new denitrification technologies .

Key words: flue gas denitration, NOx；SCR；SNCR

摘要： 对燃煤烟气脱硝现有技术进行了综述。重点对选择性催化还原法（SCR）、非选择性催化还原法（SNCR）、SNCR-SCR联合脱硝法等工艺及工业化现状进行了分析，并对国内外脱硝新技术进行了介绍，最后针对环保要求提出了我国脱硝技术应以开发中国特色的脱硝技术和加强新技术的研发为方向。

关键词: 烟气脱硝, 氮氧化物, 选择性催化还原法, 非选择性催化还原法