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Global iron and steel plant CO2 emissions and carbon-neutrality pathways.
Lei, Tianyang; Wang, Daoping; Yu, Xiang; Ma, Shijun; Zhao, Weichen; Cui, Can; Meng, Jing; Tao, Shu; Guan, Dabo.
  • Lei T; Department of Earth System Science, Tsinghua University, Beijing, China.
  • Wang D; Department of Geography, King's College London, London, UK.
  • Yu X; Department of Computer Science and Technology, University of Cambridge, Cambridge, UK.
  • Ma S; University of Chinese Academy of Social Sciences, Beijing, China.
  • Zhao W; Research Institute for Eco-civilization (RIEco), Chinese Academy of Social Sciences, Beijing, China.
  • Cui C; The Bartlett School of Sustainable Construction, University College London, London, UK.
  • Meng J; The Bartlett School of Sustainable Construction, University College London, London, UK.
  • Tao S; Department of Earth System Science, Tsinghua University, Beijing, China.
  • Guan D; The Bartlett School of Sustainable Construction, University College London, London, UK.
Nature ; 622(7983): 514-520, 2023 Oct.
Article en En | MEDLINE | ID: mdl-37731002
The highly energy-intensive iron and steel industry contributed about 25% (ref. 1) of global industrial CO2 emissions in 2019 and is therefore critical for climate-change mitigation. Despite discussions of decarbonization potentials at national and global levels2-6, plant-specific mitigation potentials and technologically driven pathways remain unclear, which cumulatively determines the progress of net-zero transition of the global iron and steel sector. Here we develop a CO2 emissions inventory of 4,883 individual iron and steel plants along with their technical characteristics, including processing routes and operating details (status, age, operation-years etc.). We identify and match appropriate emission-removal or zero-emission technologies to specific possessing routes, or what we define thereafter as a techno-specific decarbonization road map for every plant. We find that 57% of global plants have 8-24 operational years, which is the retrofitting window for low-carbon technologies. Low-carbon retrofitting following the operational characteristics of plants is key for limiting warming to 2 °C, whereas advanced retrofitting may help limit warming to 1.5 °C. If each plant were retrofitted 5 years earlier than the planned retrofitting schedule, this could lead to cumulative global emissions reductions of 69.6 (±52%) gigatonnes (Gt) CO2 from 2020 to 2050, almost double that of global CO2 emissions in 2021. Our results provide a detailed picture of CO2 emission patterns associated with production processing of iron and steel plants, illustrating the decarbonization pathway to the net-zero-emissions target with the efforts from each plant.

Texto completo: 1 Banco de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Año: 2023 Tipo del documento: Article

Texto completo: 1 Banco de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Año: 2023 Tipo del documento: Article