Life Cycle Modeling Analysis of the Interaction Between Carbon Dioxide and Air Pollutant Emissions of Coal Power in China

doi:10.11930/j.issn.1004-9649.202102023

Abstract

Abstract: Coal power occupies a dominant position in China's power supply structure, and its environmental impact has been the hotspot for research. This study established a life cycle analysis model for CO₂ and air pollutant emissions of coal power in China, built a database of coal-power’s parameters based on literature review and calculated the emissions per kW·h. The results show that the average life cycle CO₂ emissions per kW·h from China’s coal power is 838.6 g/(kW·h) in recent years, and the SO₂, NO_x, and PM_2.5 emissions are 0.34 g/(kW·h), 0.32 g/(kW·h), and 0.08 g/(kW·h), respectively. The air pollutant emissions per kW·h have fallen by more than 90%, mainly due to the ultra-low emission transformations of coal power in China. Research also indicates that the air pollutant emissions from the coal power can be effectively reduced by increasing the single-unit capacity and carrying out ultra-low emission retrofits, and the CO₂ emissions can be reduced to 144 g/(kW·h) by use of the carbon capture and storage (CCS) technology for coal-fired power, which can help achieve the carbon neutralization goal in China. If stricter air pollutant emission standards and treatment methods are not adopted, the CCS technology may increase the air pollutant emissions per kW·h from coal fired power by about 30% to 40%, which is related to the technology used in the carbon capture process.

Key words: coal power, life cycle analysis, carbon emissions, air pollutant emissions, ultra-low emission transformation, carbon capture and storage (CCS)

WANG Yanzhe, ZHOU Sheng, YAO Zilin, OU Xunmin. Life Cycle Modeling Analysis of the Interaction Between Carbon Dioxide and Air Pollutant Emissions of Coal Power in China[J]. Electric Power, 2021, 54(8): 128-135.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202102023

https://www.electricpower.com.cn/EN/Y2021/V54/I8/128

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