Integrated System Design and Analysis of Coal-fired Power Plant and Ca-based CO2 Capture Unit

被引：0

作者：

Zhang X. ^{[1
]}

Wang G. ^{[1
]}

Zhagn Z. ^{[1
]}

机构：

[1] Hebei Key Laboratory of Low Carbon and High Efficiency Power Generation Technology, North China Electric Power University, Hebei Province, Baoding

来源：

Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering | 2023年 / 43卷 / 18期

关键词：

CO[!sub]2[!/sub] capture; coal-fired power plant; energy integration; exergy analysis; supercritical CO[!sub]2[!/sub] cycle;

D O I：

10.13334/j.0258-8013.pcsee.220989

中图分类号：

学科分类号：

摘要：

CO2 capture from coal-fired power plants (CFPP) is crucial for China to achieve carbon peaking and carbon neutrality goals. A novel system by integrating Ca-based CO2 capture unit into coal-fired power plant is proposed. The integrated system retrofits the configurations of boiler and thermodynamic system, and improves the heat integration. Two integrated systems are respectively proposed based on steam Rankine cycle (SRC) and SCO2-steam combined cycle (CSCC) for power generation and CO2 capture. The thermodynamic performances of the integrated systems are evaluated by exergy efficiency and thermal efficiency, while the economic performances are assessed via levelized cost of electricity (LCOE) and CO2 captured cost. The results show that the exergy efficiency of CSCC integrated system is 39.05%, and the efficiency penalty is 3.91% due to the CO2 capture. The CSCC integrated system outperforms the SRC system due to the decrease in exergy loss of heat recovery. The LCOE of CSCC integrated system is 654.9￥/(MW.h), and CO2 captured cost is 135.1￥/t CO2. The integrated system can realize the collaborative conversion and efficient utilization of fuel chemical energy as well as waste heat, and reduce the cost of CO2 capture. ©2023 Chin.Soc.for Elec.Eng.

引用

页码：7173 / 7183

页数：10

共 21 条

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