成果归属机构：

水资源与环境学院

作者：

Song, Xiaocong ; Du, Shuai ; Deng, Chenning ; Shen, Peng ; Xie, Minghui ; Zhao, Ci ; Chen, Chen ; Liu, Xiaoyu

单位：

Chinese Res Inst Environm Sci, State Key Lab Environm Criteria & Risk Assessment, Beijing 100012, Peoples R China;China Univ Geosci Beijing, Beijing Key Lab Water Resources & Environm Engn, Beijing 100083, Peoples R China;Chinese Res Acad Environm Sci Environm Technol & E, Beijing 100012, Peoples R China

关键词：

CO2 EMISSIONS; ENERGY; IRON; MITIGATION; REDUCTION; POLAND

摘要：

China is the most important steel producer in the world, and its steel industry is one of the most carbon-intensive industries in China. Consequently, research on carbon emissions from the steel industry is crucial for China to achieve carbon neutrality and meet its sustainable global development goals. We constructed a carbon dioxide (CO2 ) emission model for China's iron and steel industry from a life cycle perspective, conducted an empirical analysis based on data from 2019, and calculated the CO2 emissions of the industry throughout its life cycle. Key emission reduction factors were identified using sensitivity analysis. The results demonstrated that the CO2 emission intensity of the steel industry was 2.33 ton CO2 /ton, and the production and manufacturing stages were the main sources of CO2 emissions, accounting for 89.84% of the total steel life-cycle emissions. Notably, fossil fuel combustion had the highest sensitivity to steel CO2 emissions, with a sensitivity coefficient of 0.68, reducing the amount of fossil fuel combustion by 20% and carbon emissions by 13.60%. The sensitivities of power structure optimization and scrap consumption were similar, while that of the transportation structure adjustment was the lowest, with a sensitivity coefficient of less than 0.1. Given the current strategic goals of peak carbon and carbon neutrality, it is in the best interest of the Chinese government to actively promote energy-saving and low-carbon technologies, increase the ratio of scrap steel to steelmaking, and build a new power system. (c) 2024 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.

基金：

Ningbo's major scientific and technological breakthrough project "Research and Demonstration on the Technology of Collaborative Disposal of Secondary Ash in Typical Industrial Furnaces" [20212ZDYF020047]; Central balance fund project "Research on Carbon Emission Accounting and Emission Reduction Potential Assessment for the Whole Life Cycle of Iron and Steel Industry" [2021-JY-07]

语种：

英文

DOI：

10.1016/j.jes.2023.04.027

来源：

JOURNAL OF ENVIRONMENTAL SCIENCES,2025():650-664.

出版日期：

2025-02

提交日期：

2024-04-25

引用参考：

Song, Xiaocong; Du, Shuai; Deng, Chenning; Shen, Peng; Xie, Minghui; Zhao, Ci; Chen, Chen; Liu, Xiaoyu. Carbon emissions in China's steel industry from a life cycle perspective: Carbon footprint insights[J]. JOURNAL OF ENVIRONMENTAL SCIENCES,2025():650-664.