«Equipment and technologies for oil and gas complex»

Investigation of the saturated vapors pressure influence of automotive gasolines and accounting for their flow regimes in a gravity-driven section of a collapsible pipeline

UDC: 665.753:622.692
DOI: -

Authors:

¹ 25th State Research Institute of Chemmotology of the Russian Ministry of Defense, Moscow, Russia
² National University of Oil and Gas "Gubkin University", Moscow, Russia

Keywords: gravity-driven section, collapsible pipeline, automobile gasoline, saturated vapor pressure, flow mode, efficiency, degree of filling, evaporation capacity

Annotation:

The authors of the article analyze hydrodynamic modes occurring in gravity-driven sections of modular pipelines designed for transporting light petroleum products. The substantiation of stratified flow mode choice as the preferred one is paid special attention at the stage of similar systems design as well as investigation of the conditions for transition to wavy or plug modes. Reid's method supplemented by an experimental study of saturated vapors pressure changes in three modern gasoline grades depending on the temperature was applied to determine the saturated vapor pressure. The analytical dependences obtained allow for taking into account the temperature's impact on the pumping process. Accounting for gravity-driven sections based on the model of non-isothermal fuel flow through a modular pipeline, characterized by a changing flow temperature due to heat exchange with the environment is suggested. Comparison of the simulation results of gasoline transfer with and without accounting for the pipeline route profile and saturated vapor pressure demonstrates the significance of these factors for ensuring reliable and efficient operation. The proposed comprehensive approach, which includes analytical modeling, experimental research and numerical calculations allows to increase the reliability and efficiency of such systems operation, to reduce risks of emergency situation occurrence and optimize the system operational costs, contributing to a more sustainable and cost-effective solution for transporting light petroleum products. Further research may include the optimization of pipeline routing with the integration of renewable energy sources such as solar energy to reduce heat exchange with the environment, hence optimising even further the system operability.

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