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- W572942223 abstract "Coal-fired power plant (CFPP) is one of the main sources of anthropogenic CO2 emissions. Capturing CO2 from CFPP by post-combustion process plays an important role to mitigate CO2 emissions. However, a significant thermal efficiency drop was observed when integrating CFPP with post-combustion carbon capture (PCC) process due to the steam extraction for capture solvent regeneration. Thus research efforts are required to decrease this energy penalty. In this study, a steady state model for 600 MWe supercritical CFPP was developed as a reference case with a low heating value (LHV) based efficiency of 41.6%. A steady state model for MEA-based PCC process was also developed and scaled up to match the capacity of the CFPP. CO2 compression process was simulated to give an accurate prediction of its electricity consumption and cooling requirement. Different integration cases were set up according to different positions of steam extraction from the CFPP. The results show that the efficiency penalty is 12.29% and 14.9% when steam was extracted at 3.64 bar and at 9.1 bar respectively. Obvious improvements were achieved by utilizing waste heat from CO2 capture and compression process, taking part of low pressure cylinders out of service, and adding an auxiliary turbine to decompress the extracted steam. The efficiency penalty of the best case decreases to 9.75%. This study indicates that comprehensive heat integrations can significantly improve the overall energy efficiency when the CFPP is integrated with PCC and compression process." @default.
- W572942223 created "2016-06-24" @default.
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- W572942223 date "2015-10-01" @default.
- W572942223 modified "2023-09-27" @default.
- W572942223 title "Study on heat integration of supercritical coal-fired power plant with post-combustion CO2 capture process through process simulation" @default.
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- W572942223 doi "https://doi.org/10.1016/j.fuel.2015.06.033" @default.
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