CO_(2)在炼钢工艺中的资源化利用现状与展望  

Current Situation and Prospects of Resource Application of CO_(2) in Steelmaking Process

作　　者：邓浩华 彭锋[1] 李晓[1] Deng Haohua;Peng Feng;Li Xiao(China Metallurgical Industry Planning and Research Institute,Beijing 100013,China)

机构地区：[1]冶金工业规划研究院,北京100013

出　　处：《特殊钢》2023年第5期9-13,共5页Special Steel

摘　　要：将CO_(2)用于炼钢工艺可实现对CO_(2)资源化利用,是一种绿色化、低成本、高效率和易实现的冶炼技术。本文以采用CO_(2)炼钢工艺为立足点,介绍了近年来CO_(2)在转炉、电弧炉等流程的应用研究现状和发展情况。同时,结合基于钢铁企业的实际运用情况,概述了CO_(2)资源化利用在炼钢过程中的可行性和实际效果。CO_(2)可作为反应气体、保护气体、搅拌气体应用在炼钢工艺过程中,具有生产成本低、热力学条件好、搅拌能力强等优点,应用前景非常广阔。实际生产表明,采用CO_(2)炼钢可提高铁水脱磷率5%~7%,吨钢节约生产成本9元以上。CO_(2)在炼钢工艺中的资源化利用将是实现我国钢铁行业高效率、低成本减排的重点研究方向之一。以我国年产粗钢10亿t估算,采用CO_(2)炼钢工艺可降低钢铁行业CO_(2)总排放量约5%左右。Using CO_(2) in steelmaking process can realize the utilization of CO_(2) resources,which is a green,low cost,high efficiency and easy to achieve smelting technology.This article was based on the application of steelmaking CO_(2) technology,the development and application of CO_(2) in the converter and electric arc furnace in recent years were introduced.According to the domestic steel enterprises actual production situation,the practical effects of resource application of CO_(2) in energy-saving,consumption reducing,and improving the quality of molten steel in steelmaking process were summarized.It also analyzed the current application status of CO_(2) gas as reaction gas,stirring gas,etc.in steelmaking process.Application of CO_(2) in steelmaking process had the advantages of lower cost,better thermodynamic conditions,stronger stirring ability,and higher gas calorific value,the application prospects can be very broad.The research results indicate that application of CO_(2) in steelmaking process can increase the dephosphorization rate of molten iron by 5%to 7%,and save production costs of over 9 yuan per ton of steel.Resource application of CO_(2) in steelmaking process will be one of the key research directions for achieving higher efficiency and lower cost emission reduction in China’s iron and steel industry.Based on an estimated annual output of crude steel of 1 billion tons in China,application of CO_(2) in steelmaking process can reduce the total CO_(2) emissions of the iron and steel industry about 5%.

关 键 词：CO_(2) 炼钢 资源化利用 节能降耗 

分 类 号：TF703[冶金工程—钢铁冶金]