Dieses Dokument steht unter einer CreativeCommons Lizenz by-nc-nd/4.0
Verlagslink DOI: 10.1016/j.egypro.2017.03.1806
Titel: Conditioning of a pipeline CO2 stream for ship transport from various CO2 sources
Sprache: English
Autor/Autorin: Engel, Frithjof 
Kather, Alfons 
Schlagwörter: impurities;ship transport;open-cycle;closed-cycle refrigeration
Erscheinungsdatum: 2017
Verlag: Elsevier
Quellenangabe: Energy Procedia (114) : 6741-6751 (2017)
Zeitschrift oder Schriftenreihe: Energy procedia 
Konferenz: 13th International Conference on Greenhouse Gas Control Technologies, GHGT-13, 14-18 November 2016, Lausanne, Switzerland 
Zusammenfassung (englisch): In this work, the closed-cycle and open-cycle process design for the conditioning of a CO2-stream for ship transport are compared in terms of the minimum specific energy demand. In contrast to other works, a high-pressure pipeline CO2-stream is assumed as an input stream rather than a low pressure CO2-stream from a capture plant. An output temperature of -50 °C is selected, which corresponds to an output pressure of 6.75 bar for pure CO2 and output pressures of less than 25 bar for typical Post-Combustion and Oxyfuel CO2-streams. It is shown that the minimum specific energy demand for closed-cycle refrigeration processes can be significantly reduced by a 2-stage or 3-stage temperature cascade. With approximately 46 kJ/kgCO2, the minimum energy demand of the 3-stage open-cycle process is almost the same as for the 3-stage closed-cycle process. It is shown that the open-cycle process design cannot be used for CO2-streams with impurities, unless the stream is purified in the refrigeration process. The results for typical Post-Combustion and Oxyfuel CO2-streams show that the minimum specific energy demand slightly increases with an increasing impurity concentration. For the 1-stage closed-cycle process, it rises from 82.1 kJ/kgCO2 for pure CO2 to 83.4 kJ/kgCO2 for an Oxyfuel stream with 98% CO2 purity. That increase is smaller for the 2-stage closed-cycle and even smaller for the 3-stage process.
URI: http://tubdok.tub.tuhh.de/handle/11420/1824
DOI: 10.15480/882.1821
ISSN: 1876-6102
Institut: Energietechnik M-5 
Dokumenttyp: (wissenschaftlicher) Artikel
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