烧结烟气源头与过程NOx减排的应用研究  

STUDY ON SOURCE AND PROCESS EMISSION REDUCTION OF NITROGEN OXIDES IN SINTERING FLUE GAS

作　　者：刘义 侯长江 王春梅[3] 刘亚辉 Liu Yi;Hou Changjiang;Wang Chunmei;Liu Yahui(HBIS Group Co.,Ltd.,Shijiazhuang,Hebei, 050023;Hebei University of Science and Technology,Shijiazhuang,Hebei,050000;Hebei ZK Energy New Material Technology Co.,Ltd.,Shijiazhuang,Hebei, 050000)

机构地区：[1]河钢集团有限公司科技创新部,河北石家庄050023 [2]河钢集团有限公司,河北石家庄050023 [3]河北科技大学,河北石家庄050000 [4]河北中科智源新材料技术有限公司,河北石家庄050000

出　　处：《河北冶金》2020年第5期74-78,共5页Hebei Metallurgy

基　　金：国家重点研发计划项目(编号:2017YFC0210300)。

摘　　要：为解决烧结烟气NOx末端治理投资大、运行成本高,且易产生二次污染物的问题,深入研究了烧结烟气NOx的产生机理。结合烧结配料方式,从降低原燃料氮含量、提高烧结矿碱度、燃料预处理等方面提出从源头降低NOx的生成;结合烧结过程,提出改变烟气路径的烧结烟气选择性循环技术,以及提高料层厚度,优化烧结终点位置和温度等控制手段,从烧结过程优化控制条件,降低NOx的生成。重点分析了这些技术方案在钢铁企业应用的实际案例以及达到的效果。In order to solve the problems of large investment,high operation cost and secondary pollution in the end treatment of NOx of sintering flue gas,the mechanism of NOx generation was studied.Combined with the sinter proportioning method,it is proposed to reduce NOx from the source in terms of reducing the nitrogen content of raw fuel,improving the basicity of sinter and fuel pretreatment.Combined with the sintering process,a series of measures such as the selective circulation technology of sintering flue gas which changes the flue gas path,increasing the thickness of the material layer,optimizing the position and temperature of the sintering end point,are put forward to optimize the control conditions in the sintering process and reduce the generation of NOx.This paper focuses on the analysis of the practical cases of these technical schemes applied in iron and steel enterprises and the results.

关 键 词：烧结烟气 NOx 末端治理 源头减排 过程控制 

分 类 号：X756[环境科学与工程—环境工程]