1. Multi-process production occurs in the iron and steel industry, supporting 'dual carbon' target: An in-depth study of CO2 emissions from different processes.
- Author
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Na, Hongming, Yuan, Yuxing, Du, Tao, Zhang, Tianbao, Zhao, Xi, Sun, Jingchao, Qiu, Ziyang, and Zhang, Lei
- Subjects
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CARBON emissions , *IRON industry , *STEEL industry , *BASIC oxygen furnaces , *EMISSIONS (Air pollution) , *ELECTRIC furnaces , *IRON - Abstract
Reducing CO 2 emissions of the iron and steel industry, a typical heavy CO 2 -emitting sector, is the only way that must be passed to achieve the 'dual-carbon' goal, especially in China. In previous studies, however, it is still unknown what is the difference between blast furnace-basic oxygen furnace (BF-BOF), scrap-electric furnace (scrap-EF) and hydrogen metallurgy process. The quantitative research on the key factors affecting CO 2 emissions is insufficient. There is also a lack of research on the prediction of CO 2 emissions by adjusting industrial structure. Based on material flow analysis, this study establishes carbon flow diagrams of three processes, and then analyze the key factors affecting CO 2 emissions. CO 2 emissions of the iron and steel industry in the future is predicted by adjusting industrial structure. The results show that: (1) The CO 2 emissions of BF-BOF, scrap-EF and hydrogen metallurgy process in a site are 1417.26, 542.93 and 1166.52 kg, respectively. (2) By increasing pellet ratio in blast furnace, scrap ratio in electric furnace, etc., can effectively reduce CO 2 emissions. (3) Reducing the crude steel output is the most effective CO 2 reduction measure. There is still 5.15 × 108-6.17 × 108 tons of CO 2 that needs to be reduced by additional measures. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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