炼钢工序颗粒物排放特征  

Characteristics of particulate matter emissions from steelmaking process

作　　者：赖茜 王永[2] 李卫东[2] 刘常鹏[2] 马光宇[2] 李小玲[3] 孙文强[1,4] LAI Xi;WANG Yong;LI Weidong;LIU Changpeng;MA Guangyu;LI Xiaoling;SUN Wenqiang(Department of Thermal Engineering,Northeastern University,Shenyang 110819,China;Technology Center,Ansteel Co.,Ltd.,Anshan 114009,China;College of Petroleum Engineering,Liaoning Shihua University,Fushun 113001,China;State Environmental Protection Key Laboratory of Eco-industry,Shenyang 110819,China)

机构地区：[1]东北大学热能工程系,辽宁沈阳110819 [2]鞍钢股份有限公司技术中心,辽宁鞍山114009 [3]辽宁石油化工大学石油天然气工程学院,辽宁抚顺113001 [4]国家环境保护生态工业重点实验室,辽宁沈阳110819

出　　处：《环境保护科学》2021年第6期112-116,共5页Environmental Protection Science

基　　金：辽宁省自然科学基金资助计划(2019-MS-117);教育部中央高校基本科研业务费专项资金资助项目(N2025022);辽宁省博士科研启动基金(2020-BS-227)。

摘　　要：为了探究钢铁企业炼钢工序的颗粒物排放特征,该研究利用自动烟尘测试仪、安德森分级采样器和激光粒度分布仪等设备对某大型钢铁企业炼钢工序的铁水倒罐及预处理、转炉二次烟气和精炼环节的颗粒物排放源进行采样,对不同排放源的颗粒物分别进行了微观形貌、粒径分布和化学成分分析。结果表明,炼钢工序排放的颗粒物主要呈光滑的圆球状和不规则块状;倒罐及预处理除尘后颗粒物粒径集中在0.4~0.7μm和3.3~4.7μm,转炉二次烟气除尘后粒径集中在0.4~0.7μm,精炼除尘后颗粒物粒径集中在0.4~0.7μm和3.3~4.7μm;炼钢工序排放颗粒物中含量最高的金属元素为TFe,非金属元素为C。To explore the particulate matter emission characteristics of the steelmaking process,an automatic smoke tester,an Anderson impactor and a laser particle size analyzer were employed to collect and analyze the onsite sampling of particulate matters from three emitting sources of the steelmaking process,including the hot metal pouring and pretreatment,second flue gas of converter and the refining furnace.The microscopic morphology,particle size distribution and chemical composition of particulate matters from different sources were analyzed.The results showed that particulate matters of the steelmaking process were mainly smooth spherical and irregular block.The size ranges of the particles after the dust collection for the hot metal pouring and pretreatment unit were mainly 0.4~0.7μm and 3.3~4.7μm.The size was 0.4~0.7μm for the secondary flue gas of converter,and0.4~0.7μm and 3.3~4.7μm for the refining furnace.TFe was the metallic element with the highest content of the steelmaking process,while the nonmetallic element with the highest content was C.

关 键 词：炼钢工序 颗粒物 形貌 粒径分布 化学成分 

分 类 号：X513[环境科学与工程—环境工程]