CO 2 Emission Calculation Model
of Integrated Steel Works Based
on Process Analysis
Hui Li, Xinchuang Li, Weijian Tian, Zhe Chen, and Hao Bai
Abstract Iron and steelmaking consumes large amounts of fuel and CO 2 emissions
are also huge. In this paper, a new calculation model was proposed to calculate CO 2
emissions based on process analysis, and the technical emission and combustion
emissions were distinguished to reflect the CO 2 emission characteristics in iron and
steel production. As for electric arc furnace (EAF) steelmaking, the results of the CO 2
emissions calculation show that the CO 2 emission intensity of the enterprise’s EAF
process was 53.84 kg/t-cs, including electric emissions and non-electric emissions.
The electric emissions were calculated as 41.09 kg/t, accounting for 76% of the
total emissions. Considering the complexity of power consumption in iron and steel
enterprises, a calculation method based on electric power structure was applied to
determine the power emission factor. Finally, the carbon flow of the entire process
was analyzed, and the possible ways for carbon reduction in steel complexes was
discussed.
Keywords Steel metallurgy · CO 2 emissions · Carbon flow · Emission factors
Introduction
CO 2 emissions reduction strategy of iron and steelmaking is of significance to the
sustainable development of the world [1]. China has the world’s largest steel output.
With the steady growth of steel annual production in the recent years, China’s steel
production accounts for approximately half of global steel production [2]. As a
resource-intensive and energy-intensive industry, iron and steelmaking is a complex
process based on iron-carbon chemical reactions at high temperature and a large
amount of energy consumption leads to massive CO 2 emmisions.
H. Li · W. Tian · Z. Chen · H. Bai (B)
School of Metallurgical and Ecological Engineering, University of Science and Technology
Beijing, 30 Xueyuan Road, Beijing 100083, China
e-mail: baihao@metall.ustb.edu.cn
H. Li · X. Li
China Metallurgical Industry Planning and Research Institute, 36 North 3rd Ring East Road,
Beijing 100013, China
© The Minerals, Metals & Materials Society 2021
A. A. Baba et al. (eds.), Energy Technology 2021, The Minerals, Metals
& Materials Series, https://doi.org/10.1007/978-3-030-65257-9_4
29
of Integrated Steel Works Based
on Process Analysis
Hui Li, Xinchuang Li, Weijian Tian, Zhe Chen, and Hao Bai
Abstract Iron and steelmaking consumes large amounts of fuel and CO 2 emissions
are also huge. In this paper, a new calculation model was proposed to calculate CO 2
emissions based on process analysis, and the technical emission and combustion
emissions were distinguished to reflect the CO 2 emission characteristics in iron and
steel production. As for electric arc furnace (EAF) steelmaking, the results of the CO 2
emissions calculation show that the CO 2 emission intensity of the enterprise’s EAF
process was 53.84 kg/t-cs, including electric emissions and non-electric emissions.
The electric emissions were calculated as 41.09 kg/t, accounting for 76% of the
total emissions. Considering the complexity of power consumption in iron and steel
enterprises, a calculation method based on electric power structure was applied to
determine the power emission factor. Finally, the carbon flow of the entire process
was analyzed, and the possible ways for carbon reduction in steel complexes was
discussed.
Keywords Steel metallurgy · CO 2 emissions · Carbon flow · Emission factors
Introduction
CO 2 emissions reduction strategy of iron and steelmaking is of significance to the
sustainable development of the world [1]. China has the world’s largest steel output.
With the steady growth of steel annual production in the recent years, China’s steel
production accounts for approximately half of global steel production [2]. As a
resource-intensive and energy-intensive industry, iron and steelmaking is a complex
process based on iron-carbon chemical reactions at high temperature and a large
amount of energy consumption leads to massive CO 2 emmisions.
H. Li · W. Tian · Z. Chen · H. Bai (B)
School of Metallurgical and Ecological Engineering, University of Science and Technology
Beijing, 30 Xueyuan Road, Beijing 100083, China
e-mail: baihao@metall.ustb.edu.cn
H. Li · X. Li
China Metallurgical Industry Planning and Research Institute, 36 North 3rd Ring East Road,
Beijing 100013, China
© The Minerals, Metals & Materials Society 2021
A. A. Baba et al. (eds.), Energy Technology 2021, The Minerals, Metals
& Materials Series, https://doi.org/10.1007/978-3-030-65257-9_4
29