Flow characteristics and dispersion during the leakage of high pressure CO 2 from an industrial scale pipeline

Abstract Pressurized pipelines represent a key way of transporting CO 2 from emitter to storage site. Leakage of CO 2 through a small puncture is the most common form of pipeline failure during normal operation; such failures could lead to fracture. The study of pipeline depressurization and dispersion behavior is of paramount importance for assessing the possibility of fracture propagation and the impact of CO 2 releases on the surrounding environment. A large-scale pipeline (258 m long, 233 mm i.d.) was constructed to study the flow characteristics and dispersion of gaseous, dense and supercritical phase CO 2 during vertical leakage through a 15 mm diameter orifice. The fluid pressures, fluid temperatures and wall temperatures along the pipeline were recorded to study the pressure responses, phase transitions and thermodynamic properties during the release. Video cameras and CO 2 concentration sensors were used to monitor the formation of the visible cloud and the concentration distribution in the far-field. There was a “two cold, intermediate hot” phenomenon during the vertical leakage in the dense and supercritical release due to the dry ice particle accumulation near the orifice. The intersection of the jet flow and settling CO 2 mixture resulted in complex visible cloud forms in dense CO 2 release.

• Publication year

  2018

• Venue

  International Journal of Greenhouse Gas Control

• Publication date

  2018-06-01

• Fields of study

  Materials Science, Engineering, Environmental Science

• Identifiers
  DOI 10.1016/J.IJGGC.2018.04.002
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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