Zheng, W., Mahgerefteh, H., Martynov, S. et al. (1 more author) (2017) Modeling of CO2 Decompression across the Triple Point. Industrial & Engineering Chemistry Research, 56 (37). pp. 10491-10499. ISSN 0888-5885
Abstract
The formation of significant quantities of solid CO2 as a result of surpassing its triple point during rapid decompression of CO2 pipelines employed as part of the carbon capture and sequestration (CCS) chain can present serious operational and safety challenges. In this paper, the development, testing and validation of a rigorous computational fluid dynamics (CFD) flow model for predicting solid CO2 formation during decompression is presented. Multiphase flow is modeled by assuming homogeneous equilibrium, and the pertinent thermodynamic data are computed using real-fluid equations of state. The flow model is validated against pressure and temperature data recorded during the decompression of an extensively instrumented 144 m long, 150 mm i.d. CO2 pipe initially at 5.25 °C and 153.3 bar. For the conditions tested, the simulated results indicate CO2 solid mass fractions as high as 35% at the rupture plane, whose magnitude gradually decreases with distance toward the pipe’s intact end.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 American Chemical Society |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Chemical and Biological Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 26 Jun 2018 14:43 |
Last Modified: | 26 Jun 2018 14:43 |
Published Version: | https://doi.org/10.1021/acs.iecr.7b02024 |
Status: | Published |
Publisher: | American Chemical Society |
Refereed: | Yes |
Identification Number: | 10.1021/acs.iecr.7b02024 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:132490 |