Journal article · Conference paper
Alternative Layouts for the Carbon Capture with the Chilled Ammonia Process
Polytechnic University of Milan1
Center for Energy Resources Engineering, Centers, Technical University of Denmark2
Department of Chemical and Biochemical Engineering, Technical University of Denmark3
CERE – Center for Energy Ressources Engineering, Department of Chemical and Biochemical Engineering, Technical University of Denmark4
Many alternatives are being investigated for the carbon capture, but none appears to have been proved as the choice for full-scale applications. This work considers the Chilled Ammonia Process for coal-fired Ultra Super Critical power plants. Three layouts are simulated with Aspen Plus and the Extended UNIQUAC thermodynamic model.
Compared to a traditional layout, stripping of the wash water of the absorber or, better, splitting the rich solution between the middle and the top of the column limits greatly the ammonia slip. Moreover, splitting the regeneration over two levels reduces substantially the electric loss due to stream extraction from the turbine.
The simulations show that the net electric efficiency drops from 45.5% to 33.5-34.5%, the SPECCA index is 3.8-4.3 MJth kgCO2–1 and the heat duties are 2.7-2.9 MJth kgCO2–1. The performances may improve greatly upon optimization of the parameters
Language: | English |
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Year: | 2013 |
Pages: | 2076-2083 |
Proceedings: | GHGT-11 |
ISSN: | 18766102 |
Types: | Journal article and Conference paper |
DOI: | 10.1016/j.egypro.2013.06.086 |
ORCIDs: | Fosbøl, Philip Loldrup and Thomsen, Kaj |