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Author:

Liu, Xianmei (Liu, Xianmei.) | Peng, Rui (Peng, Rui.) | Bai, Caiquan (Bai, Caiquan.) | Chi, Yuanying (Chi, Yuanying.) | Li, Hao (Li, Hao.) | Guo, Pibin (Guo, Pibin.)

Indexed by:

EI Scopus SCIE

Abstract:

China's iron and steel (IS) industry contributes approximately 16% of the nation's total CO2 emissions. This study evaluates the environmental impact of each step in the production process based on the life cycle assessment method. It then explores potential deep decarbonisation pathways, developing an integrated dynamic model to meet the carbon neutrality target. The results reveal three primary findings. (1) In 2020, the blast furnace-basic oxygen furnace contributed significantly to the global warming potential-1.77 E-8 kg CO2 equivalents per year (eq/yr) higher than the electric arc furnace-and the blast furnace process makes the largest contribution in ironmaking (8.9E-9 kg CO2 eq/yr). (2) Converter negative energy steelmaking technology has the highest energy savings at 39.07 million tons of coal equivalent (Mtce) and an emissions-reduction potential of 72.01 Mt. Its mitigation cost is 69 CNY/t CO2, followed by thick-layer sintering (30.21 Mtce, 61.21 Mt. and 70 CNY/t CO2) and the application of dry vacuum system for molten steel degassing circulation (26.17 Mtce, 56.03 Mt. and 102 CNY/t CO2). (3) Technological improvement could significantly impact the IS industry, reducing CO2 emissions through production structure improvement, technological development and ultra-low emissions technology, from 789 Mt. in a business-as-usual scenario to 516 Mt., 261 Mt. and 157 Mt. in 2060, respectively.

Keyword:

Carbon neutrality Technological improvement Electric arc furnace IS industry Blast furnace ironmaking

Author Community:

  • [ 1 ] [Liu, Xianmei]Beijing Univ Technol, Sch Econ & Management, Beijing 100124, PR, Peoples R China
  • [ 2 ] [Peng, Rui]Beijing Univ Technol, Sch Econ & Management, Beijing 100124, PR, Peoples R China
  • [ 3 ] [Chi, Yuanying]Beijing Univ Technol, Sch Econ & Management, Beijing 100124, PR, Peoples R China
  • [ 4 ] [Bai, Caiquan]Shandong Univ, Ctr Econ Res, Jinan 250100, Shandong, Peoples R China
  • [ 5 ] [Li, Hao]Beijing Inst Technol, Sch Management & Econ, Beijing 100081, PR, Peoples R China
  • [ 6 ] [Guo, Pibin]Taiyuan Univ, Dept Management, Taiyuan 030032, Shanxi, Peoples R China
  • [ 7 ] [Bai, Caiquan]Shandong Univ, Ctr Econ Res, 27 Shanda Nanlu, Jinan 250100, Shandong, Peoples R China

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Source :

SCIENCE OF THE TOTAL ENVIRONMENT

ISSN: 0048-9697

Year: 2022

Volume: 850

9 . 8

JCR@2022

9 . 8 0 0

JCR@2022

ESI Discipline: ENVIRONMENT/ECOLOGY;

ESI HC Threshold:47

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 38

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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