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Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Accidental release of liquid CO₂ from transport and storage
An unintended release of liquid CO2 during transport by tanks or pipelines could result in instantaneous depressurization and rapid phase transition with explosive evaporation. Under certain conditions, it could lead to a boiling liquid expansion vapor explosion (BLEVE). This research project is concerned with the safety of CO2 transport and storage facilities. It is a continuation of the prior research in the USN laboratory to investigate the rapid phase changes and the evolution of the evaporation and blast waves. Further, to evaluate the hazards that arise during the accidental release of liquid CO2 into the environment. This experimental research expanded former studies to cover the effect of a diverging cross-sectional geometry on phase transition mechanism and expansion wave behavior during sudden depressurization. It investigated the effect of liquid volume fraction on the dynamic characteristics of rarefaction, evaporation, and blast wave in the existing setup. In addition, the research examined the phase transition mechanism during the CO2 release from the bottom of a rectangular duct. This research presents a new installation comprising a vertical high-pressure conicalshaped vessel with a double-membrane release process. A slip-on flange separates the two membranes, constituting a medium-pressure (MP) section. The experimental rig is instrumented with pressure transducers, temperature thermocouples, and a highspeed video camera. The vapor/liquid CO2 could be depressurized by increasing or decreasing the pressure in the MP flange. Operational analyses based on the experimental results showed that increasing the pressure in the MP section is a more reliable method to run CO2 depressurization tests on this installation. In contrast to decreasing the pressure in the MP section technique, its operation was more controllable, ensuring instantaneous membranes’ rupture without reflecting waves affecting the evaporation process in the test section. The dynamic evaporation characteristics were investigated by ...
Accidental release of liquid CO₂ from transport and storage
An unintended release of liquid CO2 during transport by tanks or pipelines could result in instantaneous depressurization and rapid phase transition with explosive evaporation. Under certain conditions, it could lead to a boiling liquid expansion vapor explosion (BLEVE). This research project is concerned with the safety of CO2 transport and storage facilities. It is a continuation of the prior research in the USN laboratory to investigate the rapid phase changes and the evolution of the evaporation and blast waves. Further, to evaluate the hazards that arise during the accidental release of liquid CO2 into the environment. This experimental research expanded former studies to cover the effect of a diverging cross-sectional geometry on phase transition mechanism and expansion wave behavior during sudden depressurization. It investigated the effect of liquid volume fraction on the dynamic characteristics of rarefaction, evaporation, and blast wave in the existing setup. In addition, the research examined the phase transition mechanism during the CO2 release from the bottom of a rectangular duct. This research presents a new installation comprising a vertical high-pressure conicalshaped vessel with a double-membrane release process. A slip-on flange separates the two membranes, constituting a medium-pressure (MP) section. The experimental rig is instrumented with pressure transducers, temperature thermocouples, and a highspeed video camera. The vapor/liquid CO2 could be depressurized by increasing or decreasing the pressure in the MP flange. Operational analyses based on the experimental results showed that increasing the pressure in the MP section is a more reliable method to run CO2 depressurization tests on this installation. In contrast to decreasing the pressure in the MP section technique, its operation was more controllable, ensuring instantaneous membranes’ rupture without reflecting waves affecting the evaporation process in the test section. The dynamic evaporation characteristics were investigated by ...
Accidental release of liquid CO₂ from transport and storage
Ibrahim, Osama Kabbashi M. (Autor:in)
09.11.2023
Hochschulschrift
Elektronische Ressource
Englisch
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