UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Modeling of CO2 Decompression across the Triple Point

Zheng, W; Mahgerefteh, H; Martynov, S; Brown, S; (2017) Modeling of CO2 Decompression across the Triple Point. Industrial and Engineering Chemistry Research , 56 (37) pp. 10491-10499. 10.1021/acs.iecr.7b02024. Green open access

[thumbnail of Martynov_revised_manuscript (7).pdf]
Preview
Text
Martynov_revised_manuscript (7).pdf - Accepted Version

Download (1MB) | Preview

Abstract

The formation of significant quantities of solid CO 2 as a result of surpassing its triple point during rapid decompression of CO 2 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 CO 2 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. CO 2 pipe initially at 5.25 °C and 153.3 bar. For the conditions tested, the simulated results indicate CO 2 solid mass fractions as high as 35% at the rupture plane, whose magnitude gradually decreases with distance toward the pipe's intact end.

Type: Article
Title: Modeling of CO2 Decompression across the Triple Point
Open access status: An open access version is available from UCL Discovery
DOI: 10.1021/acs.iecr.7b02024
Publisher version: http://doi.org/10.1021/acs.iecr.7b02024
Language: English
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10023441
Downloads since deposit
129Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item