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$CO_{2}$ Liquefaction Close to the Triple Point Pressure
Content Provider | MDPI |
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Author | Stian, Trædal Stang, Jacob Hans Georg Snustad, Ingrid Johansson, Martin Viktor Berstad, David |
Copyright Year | 2021 |
Description | For vessel-based transport of liquid $CO_{2}$ in carbon capture and storage chains, transport at 8 bar(a) enable significant cost reductions compared to transport at higher pressures for most transport distances and volumes. Transport at even lower pressures could further reduce the costs. There are, however, concerns related to dry ice formation and potential clogging in parts of the chain that could lead to operational issues when operating close to the triple point pressure of $CO_{2}$. In this paper, results from an experimental campaign to de-risk and gain operational experience from the low-pressure $CO_{2}$ liqtion process are described. Six experiments using pure $CO_{2}$ or $CO_{2}/N_{2}$ mixtures are presented. In four of the experiments, the liquid product pressure was continuously lowered until dry ice was detected and eventually clogged the system. In the final two experiments, the liqtion process was run in steady-state at low liqtion pressures for five hours to ensure that there is no undetected dry ice in the process that could lead to accumulation and operational issues over time. These experiments demonstrate that pure $CO_{2}$ can be safely liquefied at 5.8 bar(a) and a $CO_{2}/N_{2}$ mixture can be liquefied at 6.5 bar(a) without issues related to dry ice formation. |
Starting Page | 8220 |
e-ISSN | 19961073 |
DOI | 10.3390/en14248220 |
Journal | Energies |
Issue Number | 24 |
Volume Number | 14 |
Language | English |
Publisher | MDPI |
Publisher Date | 2021-12-07 |
Access Restriction | Open |
Subject Keyword | Energies Transportation Science and Technology Co2 Liquefaction Low-pressure Liquid Co2 Carbon Capture and Storage Ship Transport |
Content Type | Text |
Resource Type | Article |