670 MW超临界对冲燃烧直流锅炉低氮改造技术探讨  

Discussion on Low Nitrogen Transformation Technology of 670 MW Supercritical Hedging Combustion DC Boiler

作　　者：谢建斌 XIE Jianbin(CHN Energy(Quanzhou)Thermal Power Co.,Ltd.,Quanzhou 362804)

机构地区：[1]国能(泉州)热电有限公司,泉州362804

出　　处：《现代制造技术与装备》2023年第9期152-154,共3页Modern Manufacturing Technology and Equipment

摘　　要：国能(泉州)热电有限公司在2015年对#3锅炉进行低氮改造,对比同工况下未进行改造的#4炉,选择性催化还原(Selective Catalytic Reduction,SCR)入口NOx降低100 mg·Nm-3以上,效果显著。但是,按分级燃烧原理改造后的锅炉存在水冷壁高温腐蚀、锅炉受热面易结焦、燃烧不充分等问题。针对存在的问题,公司采取了一系列应对措施,取得了良好效果。CHN Energy(Quanzhou)Thermal Power Co.,Ltd.carried out low-nitrogen transformation of#3 boiler in 2015,which was not carried out under the same working conditions.The modified#4 furnace,Selective Catalytic Reduction(SCR)inlet NOx reduced by more than 100 mg·Nm-3,the effect is remarkable,but according to the principle of“graded combustion”the transformed boiler has problems such as high temperature corrosion of water wall,easy coking of the boiler heating surface,insufficient combustion,etc.,the company has taken a series of countermeasures and achieved good results.

关 键 词：超临界直流炉 低氮改造 高温腐蚀 结焦 

分 类 号：TM621.2[电气工程—电力系统及自动化]