CO_(2)在炼钢工序资源化利用技术现状和前景分析  

Current status and prospect of CO_(2)resource utilization technology in steelmaking process

作　　者：李晨晓 赵鹏 孟鑫 沈浩杰 张昀 冯子康 LI Chenxiao;ZHAO Peng;MENG Xin;SHEN Haojie;ZHANG Yun;FENG Zikang(College of Metallurgy and Energy,North China University of Science and Technology,Tangshan 063210,Hebei,China;Key Laboratory of Special Metallurgy and Material Preparation,Tangshan 063210,Hebei,China)

机构地区：[1]华北理工大学冶金与能源学院,河北唐山063210 [2]唐山市特种冶金及材料制备重点实验室,河北唐山063210

出　　处：《连铸》2025年第1期1-10,共10页Continuous Casting

基　　金：国家自然科学基金资助项目(52274334);河北省高等学校科学技术研究资助项目(BJK2022059)。

摘　　要：钢铁行业的碳排放量在中国各行业中占较大比例,在“双碳”背景下炼钢工序如何实现碳减排和二氧化碳资源化利用备受关注。以CO_(2)在钢铁行业的资源化利用为切入点,介绍了钢铁工业CO_(2)排放现状和资源化利用现状,着重分析了CO_(2)分别作为反应气、搅拌气及保护气应用于炼钢工序的技术现状;通过热力学计算得出CO_(2)氧化铁液中0.1%(质量分数)金属元素[M]时,综合放热量减少,起到控温作用;对CO_(2)作为搅拌气体分析得出CO_(2)在利用率达到85%左右时搅拌能为Ar的2倍。CO_(2)可以作为一种资源化气体逐步应用在炼钢相关工序,具备节能减排和降本增效的效果,但需进一步明确CO_(2)在高温熔池中的反应特性和作用形式,以便精准、高效地实现CO_(2)的资源化利用。Carbon emissions from the iron and steel industry account for a large proportion of all industries in China,and how to realize carbon emission reduction and CO_(2)resource utilization in the steelmaking process under the background of"double carbon"has attracted much attention.Taking the resource utilization of CO_(2)in the iron and steel industry as an entry point,it introduces the current situation of CO_(2)emission and resource utilization in the iron and steel industry,and focuses on the analysis of the technical status of applying CO_(2)as reaction gas,stirring gas and protective gas in the steelmaking process.Through thermodynamic calculations,it is concluded that when CO_(2)oxidizes 0.1mass%of the metal elements in the iron liquid[M],the comprehensive exothermic heat release is reduced,and it plays a role of controlling the temperature.The analysis of CO_(2)as a stirring gas shows that CO_(2)is used in the steelmaking process to reduce carbon emission.As a stirring gas,CO_(2)withthe utilization rate of about 85%can provide twice as much stirring effect as Ar.CO_(2)can be used as a kind of resource gas gradually applied in the steelmaking process,with energy saving and emission reduction and cost-effective effect,but needs to further clarify the reaction characteristics of CO_(2)in the high-temperature melting pool and the role of the form,in order to accurately and efficiently realize the resourceful use of CO_(2).

关 键 词：炼钢 CO_(2)资源化利用 反应特性 热力学规律 动力学条件 

分 类 号：X701[环境科学与工程—环境工程] TF7[冶金工程—钢铁冶金]