高炉生产过程中氯的来源、迁移转化及影响  

THE SOURCE, MIGRATION, TRANSFORMATION AND EFFECT OF CHLORINE IN BLAST FURNACE PRODUCTION

作　　者：程正霖 朱晓华 李鹏飞[1,2,3] CHENG Zheng-lin;ZHU Xiao-hua;LI Peng-fei(State Key Laboratory of Iron and Steel Industry Environmental Protection,Beijing 100088,China;Energy Conservation and Environment Protection Co.,Ltd,MCC Group,Beijing 100088,China;Central Research Institute of Building and Construction Co.,Ltd,MCC Group,Beijing 100088,China)

机构地区：[1]钢铁工业环境保护国家重点实验室,北京100088 [2]中冶节能环保有限责任公司,北京100088 [3]中冶建筑研究总院有限公司,北京100088

出　　处：《环境工程》2021年第4期86-91,共6页Environmental Engineering

基　　金：国家重点研发计划课题“复杂条件下低浓度大气污染物检测、监测关键技术研究”(2019YFF0217001)。

摘　　要：入炉原料中氯元素在高炉内经过一系列迁移转化,主要以氯化氢(HCl)形式汇入高炉煤气,会导致系统腐蚀、后续高炉煤气脱硫催化剂中毒等,对高炉生产和环境造成影响。概述了高炉中氯的来源及在各炉料中的赋存状态;基于高炉氯平衡的研究,分析了氯的主要收入项和支出项的贡献比重;介绍了有机态和无机态氯在高炉中的迁移转化行为。虽然氯在高炉生产过程中具有改善烧结矿的低温还原粉化性能、提高熔化区透气性等正面作用,但同时对高炉运行和环境等产生诸多不利影响。而高炉除氯措施中,从源头控制入炉原料中氯元素的含量是最直接、最有效、最经济的措施。The elemental chlorine in the incoming raw materials undergoes a series of migration and transformation in the blast furnace, mainly enters into the blast furnace gas in the form of hydrogen chloride(HCl), which will lead to system corrosion, subsequent blast furnace gas desulfurization catalyst poisoning and cause environmental impacts. This paper provided an overview of the sources and behaviors of chlorine in blast furnace and its occurrence state in each furnace charge, analyzed the contributions of chlorine’s main income items and expenditure items based on the study of the blast furnace chlorine balance, and introduced the migration and transformation behavior of organic and inorganic chlorine in the blast furnace. Although chlorine in the blast furnace production process has positive effect of improving the low temperature reduction degradation of sinter and improving the permeability of the melting zone, it also has a lot of adverse effects on the operation of the blast furnace and the environment. The above contents provided theoretical basis for controlling the negative effects of chlorine on blast furnace production, and the specific dechlorination measures of blast furnace were further summarized, while controlling the chlorine content of raw material from the source was the most direct, effective and economical measure.

关 键 词：氯 高炉系统 行为分析 控制措施 

分 类 号：TF54[冶金工程—钢铁冶金]