液态空气
碳捕获和储存(时间表)
储能
二氧化碳
烟气
空气分离
废物管理
环境科学
化学
工艺工程
工程类
物理
功率(物理)
生态学
有机化学
量子力学
气候变化
氧气
生物
作者
Liugan Zhang,Kai Ye,Yong Zhen Wang,Wei Han,Meina Xie,Long Xiang Chen
出处
期刊:Energy
[Elsevier]
日期:2024-03-01
卷期号:290: 129867-129867
标识
DOI:10.1016/j.energy.2023.129867
摘要
Cryogenic separation carbon capture is a promising green carbon emission reduction approach, which is rarely applied due to its high cold energy requirement. This work proposes a hybrid system combining cryogenic separation carbon capture and liquid air energy storage (CS-LAES), comprehensively utilizing low-temperature and high-pressure conditions of LAES to reduce the energy consumption of cryogenic CO2 separation. Flue gas with higher carbon dioxide (CO2) concentrations from coal-fired power plants is compressed in the charging process of CS-LAES instead of air. The CO2 is captured, and the CO2-free air is liquefied and stored for later use. The results demonstrate that the carbon capture energy consumption of the CS-LAES system is 1.12 GJ/ton, which is 0.68 GJ/ton lower than that of conventional cryogenic capture technology (1.80 GJ/ton). The CO2 capture rate of 99.97 % is higher than that of most existing cryogenic CO2 capture technologies. Moreover, the standalone total exergy efficiency (S_TEE) for energy storage of the CS-LAES system was 63.40 %, which is 5.22 % higher than the baseline LAES. Meanwhile, the dynamic payback period of the CS-LAES system is 5.82 years, which is more economical than that of baseline LAES (12.89 years) due to avoiding expensive carbon tax.
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