LAPSE:2022.0036
Published Article
LAPSE:2022.0036
Effects of Flow Velocity on Transient Behaviour of Liquid CO2 Decompression during Pipeline Transportation
Chenghuan Xiao, Zhaijun Lu, Liguo Yan, Jiaqiang Wang, Shujian Yao
October 12, 2022
Investigating the transient behaviour of liquid CO2 decompression is of great importance to ensure the safety of pipeline transportation in carbon capture and storage (CCS) technology. A computational fluid dynamics (CFD) decompression model based on the non-equilibrium phase transition and Span−Wagner equation of state (EoS) was developed to study the effects of actual flowing state within the pipeline on the transient behaviour of liquid CO2 decompression. Then, the CFD model was verified by comparing the simulated results to test data of a large-scale “shock tube” with an inner diameter of 146.36 mm. The results showed that the evaporation coefficient had a significant impact on the transition behaviour of CO2 decompression, while the condensation coefficient made no difference. When the evaporation coefficient was 15 s−1, the CFD-predicted results were in good agreement with the test results. Moreover, the effects of flow velocity on transient behaviour of liquid CO2 decompression were further investigated. It was found that the flow velocity affected the temperature drop of liquid CO2 during decompression, thereby affecting the phase transition of liquid CO2. In addition, the initial flow velocity also showed a significant influence on the transient behaviour of CO2 outside the pipe.
Keywords
CCS, CO2 decompression, flow velocity, nonequilibrium phase transition, transient behaviour
Suggested Citation
Xiao C, Lu Z, Yan L, Wang J, Yao S. Effects of Flow Velocity on Transient Behaviour of Liquid CO2 Decompression during Pipeline Transportation. (2022). LAPSE:2022.0036
Author Affiliations
Xiao C: Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China; Joint International Research Laboratory of Key Technology for Rail Traffic Safety, School o
Lu Z: Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China; Joint International Research Laboratory of Key Technology for Rail Traffic Safety, School o
Yan L: Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China; Joint International Research Laboratory of Key Technology for Rail Traffic Safety, School o
Wang J: Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China; Joint International Research Laboratory of Key Technology for Rail Traffic Safety, School o
Yao S: Key Laboratory of Traffic Safety on Track, Ministry of Education, School of Traffic & Transportation Engineering, Central South University, Changsha 410075, China; Joint International Research Laboratory of Key Technology for Rail Traffic Safety, School o
Journal Name
Processes
Volume
9
Issue
2
First Page
192
Year
2021
Publication Date
2021-01-20
Published Version
ISSN
2227-9717
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PII: pr9020192, Publication Type: Journal Article
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LAPSE:2022.0036
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doi:10.3390/pr9020192
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Oct 12, 2022
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Oct 12, 2022
 
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Oct 12, 2022
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Thomas A. Adams II
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