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Publisher DOI: 10.1016/j.egypro.2014.07.024
Title: Part load behaviour of power plants with a retrofitted post-combustion CO₂ capture process
Language: English
Authors: Roeder, Volker 
Kather, Alfons 
Keywords: post-combustion capture;part load behaviour;IP/LP crossover pressure;balancing power
Issue Date: 28-Aug-2013
Publisher: Elsevier
Source: Energy Procedia (51): 207-216 (2013)
Journal or Series Name: Energy procedia 
Abstract (english): The flexible and part load operation of fossil-fuelled power plants will increase due to the higher share of fluctuating renewable energies, like wind and solar power. In this work the part load behaviour of the post-combustion CO₂ capture (PCC) process is evaluated. The net efficiency of the conventional hard-coal-fired power plant decreases from 45.6% at full load to 41.5% at 40% load. The net efficiency with PCC using 7 m MEA (monoethanolamine) as solvent decreases to 34.8% at full load and to 30.1% at 40% load. The pressure of the intermediate pressure/low pressure crossover section has major influence on the efficiency. In part load higher pressures are in advantage due to lower throttling losses. The shutdown of the PCC is a possibility to generate balancing power. A reduced capture rate of 75% leads to a generation of 5% additional power.
DOI: 10.15480/882.2218
ISSN: 1876-6102
Institute: Energietechnik M-5 
Type: InProceedings (Aufsatz / Paper einer Konferenz etc.)
Funded by: Bundesministerium für Wirtschaft und Technologie
Project: Verbundvorhaben DYNCAP: Dynamische Untersuchung von Dampfkraftprozessen mit CO2-Abtrennung zur Bereitstellung von Regelenergie 
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