双碳背景下中国电炉流程发展战略研究

doi:10.13228/j.boyuan.issn0449-749x.20230462

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Abstract In order to actively respond to the "dual carbon goals" proposed by China, a series of policy documents for the steel industry have been successively issued by various ministries and commissions. It has been clearly pointed out that the development of the full-scrap electric arc furnace process should be guided in an orderly and reasonable manner, and the green and low-carbon transformation of the steel industry should be further promoted. In this context, a study was conducted to calculate direct carbon emissions, indirect carbon emissions, and product carbon sequestration credits resulting from China's iron and steel industry between 1991 and 2021. The calculations were based on the final energy consumption data of the iron and steel industry from the "China Energy Statistical Yearbook." The current state of CO₂ emissions in China's steel industry was analyzed as well. Furthermore, CO₂ emissions caused by typical long and short-process iron and steel production enterprises were calculated to explore variations in carbon emissions between these two process types. This quantification allowed for the assessment of the potential carbon reduction of the electric arc furnace process. It was determined that the rational and orderly promotion of the electric arc furnace process development stands as the primary direction for the steel industry's future transformation and advancement. Challenges and obstacles in China's electric arc furnace process development were also examined within the context of the current state of the iron and steel industry. Addressing the aforementioned issues, the study delved into resource-energy security, development modes, and the necessary technical structure for the electric arc furnace process. Preventative solutions were formulated based on these aspects. Building upon this research, a dual-carbon analysis model was constructed for China's electric arc furnace process. This model laid the groundwork for outlining a low-carbon development roadmap for the electric arc furnace process in China, considering both process-based and time-based levels. The findings revealed that the electric arc furnace procedure and rolling procedure exhibit the most substantial potential for carbon reduction, accounting for 40.7% and 36.7% of the entire process's carbon reduction potential, respectively. Through the integration of low-carbon technologies across various stages, it is projected that the carbon emission intensity per ton of steel in the electric arc furnace process will decrease by 35.1% in 2030 compared to 2020, by 74.7% in 2040, and by 2050, achieving a state of "near-zero carbon" smelting.

Key words： electric arc furnace process steel industry carbon peak carbon neutrality development roadmap

Received: 17 August 2023

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	SHANGGUAN Fangqin
	CUI Zhifeng
	ZHOU Jicheng
	NI Bing
	LI Tao

Cite this article:

SHANGGUAN Fangqin,CUI Zhifeng,ZHOU Jicheng等. Research on development strategy of electric arc furnace process in China under background of double carbon[J]. Iron and Steel, 2024, 59(1): 12-21.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20230462 OR http://www.chinamet.cn/Jweb_gt/EN/Y2024/V59/I1/12

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