Evaluation and comparison of the part load behaviour of the CO₂ capture technologies oxyfuel and post-combustion

Publikationstyp
Conference Paper
Date Issued
2013-08-05
Sprache
English
Author(s)
Roeder, Volker  
Hasenbein, Christoph  
Kather, Alfons  
Institut
Energietechnik M-5  
TORE-DOI
10.15480/882.2080
TORE-URI
http://hdl.handle.net/11420/2084
Journal
Energy procedia  
Volume
37
Start Page
2420
End Page
2431
Citation
Energy Procedia (37): 2420-2431 (2013)
Contribution to Conference
11th International Conference on Greenhouse Gas Control Technologies, 18-22 November 2012, Kyoto, Japan  
Publisher DOI
10.1016/j.egypro.2013.06.123
Scopus ID
2-s2.0-84898768323
Publisher
Elsevier
The rising share of fluctuating renewable energies increasingly demand flexible and part load operation of fossil-fuelled power plants with and without CCS. In this work the part load behaviour of the Oxyfuel and the post-combustion CO₂capture processes are evaluated and compared. The net efficiency of the conventional hard-coal-fired power plant decreases from 45.2% at full load to 41.6% at 40% load. The net efficiency with post-combustion CO₂capture using 7 m MEA as solvent decreases to 34.7% at full load and 30.2% at 40% load. The Oxyfuel process reaches in turn a net efficiency of 36.6% at full load and 32.3% at 40% load and shows therefore a benefit of 1.9%-points at full load compared to the postcombustion CO₂capture with MEA. The efficiency advantage of the Oxyfuel process compared to the post-combustion CO₂capture process remains constant at part load.
Subjects
power plant
part load
off-design
Co2 capture
CCS
post-combustion
oxyfuel
DDC Class
600: Technik
620: Ingenieurwissenschaften
Lizenz
https://creativecommons.org/licenses/by-nc-nd/3.0/
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