Parametric Process Design and Economic Analysis of Post-Combustion CO 2 Capture and Compression for Coal- and Natural Gas-Fired Power Plants

Emmanuel Adu, Y.D. Zhang, Dehua Liu and Paitoon Tontiwachwuthikul
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Emmanuel Adu: Department of Oil and Gas Storage and Transportation Engineering, School of Petroleum Engineering, Yangtze University, Wuhan 430100, China
Y.D. Zhang: Department of Oil and Gas Storage and Transportation Engineering, School of Petroleum Engineering, Yangtze University, Wuhan 430100, China
Dehua Liu: Department of Oil and Gas Storage and Transportation Engineering, School of Petroleum Engineering, Yangtze University, Wuhan 430100, China
Paitoon Tontiwachwuthikul: Clean Energy Technologies Research Institute (CETRI), Faculty of Engineering and Applied Science, University of Regina, 3737 Wascana Parkway, Regina, SK S4S0A2, Canada

Energies, 2020, vol. 13, issue 10, 1-28

Abstract: For the envisaged large number of commercial-scale carbon capture and storage (CCS) projects that are to be implemented in the near future, a number of issues still need to be resolved, the most prominent being the large capital and operational costs incurred for the CO 2 capture and compression process. An economic assessment of the capture and compression system based on optimal design data is important for CCS deployment. In this paper, the parametric process design approach is used to optimally design coal and natural gas monoethanolamine (MEA)-based post-combustion CO 2 absorption–desorption capture (PCC) and compression plants that can be integrated into large-scale 550 MW coal-fired and 555 MW natural gas combined cycle (NGCC) power plants, respectively, for capturing CO 2 from their flue gases. The study then comparatively assesses the energy performance and economic viabilities of both plants to ascertain their operational feasibilities and relative costs. The parametric processes are presented and discussed. The results indicate that, at 90% CO 2 capture efficiency, for the coal PCC plant, with 13.5 mol.% CO 2 in the inlet flue gas, at an optimum liquid/gas ratio of 2.87 kg/kg and CO 2 lean loading of 0.2082 mol CO 2 /mol MEA, the CO 2 avoidance cost is about $72/tCO 2 , and, for the NGCC PCC plant, with 4.04 mol.% CO 2 in the inlet flue gas, at an optimum liquid/gas ratio of 0.98 kg/kg and CO 2 lean loading of 0.2307 mol CO 2 /mol MEA, the CO 2 avoidance cost is about $94/tCO 2 .

Keywords: post-combustion; carbon capture and storage; coal-fired power plants; NGCC; energy; economic analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

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