Flow characteristics and dispersion during the vertical anthropogenic venting of supercritical CO2 from an industrial scale pipeline

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Flow characteristics and dispersion during the vertical anthropogenic venting of supercritical CO2 from an industrial scale pipeline

Yan, X; Guo, X; Yu, J; Chen, S; Zhang, Y; Mahgerefteh, H; Martynov, S; (2018) Flow characteristics and dispersion during the vertical anthropogenic venting of supercritical CO2 from an industrial scale pipeline. In: Yan, J and Feitz, A and Li, X and Zhang, X, (eds.) (Proceedings) Applied Energy Symposium and Forum - Carbon Capture, Utilization and Storage (CCUS). (pp. pp. 66-72). Elsevier Green open access

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Abstract

Pressurized pipelines represent the most reliable and cost effective way of transporting captured CO2 from fossil fuel-fired electricity generation plants for subsequent sequestration. Leakage of CO2 through a small puncture is the most common form pipeline failure during normal operation; such failures could lead to fracture. The study of pipeline depressurization and inventory dispersion behavior is of paramount importance for assessing the possibility of fracture propagation and the impact of CO2 pipeline releases on the surrounding environment. A large-scale fully instrumented pipeline (258 m long, 233mm i.d.) was constructed to study the pressure response, phase transition and dispersion of gaseous, dense and supercritical phase CO2 during vertical leakage through a 15 mm diameter orifice. The fluid pressures and temperatures in the pipeline were recorded to study the pressure response and phase transition inside the pipeline. Video cameras and CO2 concentration sensors were used to monitor the formation of the visible cloud and the gas concentration distribution in the far-field. There was a “two cold, intermediate hot” phenomenon during the vertical release in the dense and supercritical release due to the dry ice particle accumulation near the orifice. The intersection of the jet flow and settling CO2 mixture resulted in complex visible cloud forms in dense CO2 release.

Type:	Proceedings paper
Title:	Flow characteristics and dispersion during the vertical anthropogenic venting of supercritical CO2 from an industrial scale pipeline
Event:	Applied Energy Symposium and Forum - Carbon Capture, Utilization and Storage (CCUS)
Location:	Perth, AUSTRALIA
Dates:	27 June 2018 - 29 June 2018
Open access status:	An open access version is available from UCL Discovery
DOI:	10.1016/j.egypro.2018.11.012
Publisher version:	https://doi.org/10.1016/j.egypro.2018.11.012
Language:	English
Additional information:	This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/4.0/).
Keywords:	CO2 leakage, Flow characteristic, Dispersion, Large-scale pipeline, CARBON-DIOXIDE, VALIDATION, CAPTURE, STORAGE, TRANSPORT, LEAKAGE, MODEL
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/10075608