CCUS对中国粗钢生产的碳减排潜力评估

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Abstract Basis for assessed 1.76 billion tons CO₂ from 277 crude steel manufactures, an integrated techno-economic assessment model was improved to assess the potential of CCUS retrofits in crude steel industry. Through scenario analyses some critical questions for CCUS retrofitting in the steel industry were answered systematically, such as the suitable factory inventory, matched geological sites, CO₂ mitigation magnitude, and related cost characters. According to the study results, CO₂ emissions from the crude steel process can be reduced by CCUS at scale. Under the current techno-economic status, with additional costs ranging from 67 to 467 CNY/t steel (levelized costs less than 300CNY/t CO₂ at capture rate of 60%), 0.87 billion tons CO₂ accounting for 89% of the total CO₂ capture was mitigated annually by the full-chain CO₂-EOR and EWR technology. About 1.05 billion tons of saline water for further desalination and utilization was produced by only EWR technology. Potential low-cost CCUS projects for crude steel enterprises mainly distribute in regions in or nearby Bohai Bay Basin, Junggar Basin, Jianghan Basin, and Ordos Basin.

Key words： crude steel industry full-chains CCUS source-sink matching techno-economic assessment carbon mitigation

Received: 27 April 2021

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X32

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	WEI Ning
	LIU Sheng-nan
	LI Gui-ju
	LI Xiao-chun

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WEI Ning,LIU Sheng-nan,LI Gui-ju等. Mitigation potential evaluation of CO₂ capture and storage in crude steel industries of China[J]. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(12): 5866-5874.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2021/V41/I12/5866

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