A Study on the Carbon Emissions Calculation Model of Iron and Steel Products Based on EIO-LCA

Abstract:

Carbon emission has become a global focus. The construction of carbon emissions calculation model is helpful for its control. Currently, there is still no uniform method about accounting on the carbon emissions of steel products. The common calculation models are not totally suitable for China. To make up for the shortcomings of them, this paper defines the life cycle system of the iron and steel products based on EIO-LCA, measures the quantity of the direct, indirect carbon emissions and carbon emission deduction in various stages of this life cycle, identifies the hotspot and department which contributes most in carbon emission, and takes Hunan Valin Xiangtan Iron and Steel Co., Ltd (abbreviated Xiang Gang) as an example to validate it. It shows that 2103.87kg of carbon in total would be emitted when one tonne of steel is produced by Xiang Gang. Among the total, the quantity of direct, indirect and deductible carbon emission are 2033.5kg, 216.75kg and 146.38kg respectively, namely carbon emissions of producing per ton of steel is 2.1 tons. Direct carbon emissions from all stages of the life cycle of steel products mainly exist in the stage of steel production and transportation. And ferrous metal smelting and rolling processing industry are the largest emissions industries of the total indirect emissions. Converting by-product gas, heat, and pressure into electrical energy use can reduce carbon dioxide emissions by 146kg, which is the equivalent of reducing carbon dioxide emissions per ton of steel 0.15 tons. Therefore, in order to make the carbon dioxide emissions reach the advanced domestic level of 1.7 tons per ton steel, the iron and steel enterprises can meet emissions reduction targets by strengthening control of carbon emission and improving the efficiency of the utilization of secondary energy from small and large scale.

• Periodical: Applied Mechanics and Materials (Volumes 713-715)
• Pages: 2970-2974
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.713-715.2970
• Online since: January 2015
• Authors: Xing Ling Luo*, An Quan Zou, Chun Guang Quan
• Keywords: Calculation Model, Carbon Emission, EIO - LCA, Iron Products, Steel Products

References

[1] Shangguan Fangqin, Zhang Chunxia, Li Xiuping, etc. Discussion on the steel industry CO2 emissions calculation method, Iron and Steel Research, 22. 11 (2010): 1-5.

[2] Huang Zhijia, Ding Xiao, Sun Hao backbone of steel company LCA CO2 emission factors analysis, Environmental Sciences, 30. 2(2010): 444.

[3] Huang Xiqiang input and output of energy products research and application, Metallurgical Power, 1(2011): 83-85.

[4] Feng Rui, Chen Shengnan living consumption analysis and comparison of carbon emission estimation methods, environmental protection and recycling economy, 30. 9(2010): 61-65.

[5] Ji Junping, Liu Lei, Ma Xiaoming research department of greenhouse gas emissions based on Chinese architecture EIO-LCA model, Peking University: Natural Science, 47. 4(2011): 741-749.

[6] Li Xiaohuan Ji Junping, Ma Xiaoming, other emissions based on fuel ethanol EIO-LCA life cycle greenhouse gas, Peking University (Natural Science), 6(2011): 17.

[7] Hendrickson C, Horvath A, Joshi S, et al. Peer reviewed: economic input–output models for environmental life-cycle assessment, Environmental Science & Technology, 32. 7(1998): 184A-191A.

DOI: 10.1021/es983471i

[8] Hendrickson C T, Lave L B, Matthews H S. Environmental life cycle assessment of goods and services: an input-output approach, Resources for the Future, (2006), in press.

[9] Lave L B. Using input-output analysis to estimate economy-wide discharges, Environmental Science & Technology, 29. 9(1995): 420A-426A.

DOI: 10.1021/es00009a748

[10] Zhang Zhihui, Liu Rui Jie. Emissions accounting based on input-output analysis of the construction of carbon, Tsinghua University: Natural Science Edition, 1 (2013): 53-57.