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Applied energy v.212, 2018년, pp.162 - 174   SCI SCIE
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Density of carbon dioxide with impurities by Coriolis flow meter, oscillation-type densitometer and equations of state

Nazeri, Mahmoud (Research Centre for Carbon Solutions (RCCS), School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom ) ; Maroto-Valer, M. Mercedes (Research Centre for Carbon Solutions (RCCS), School of Engineering and Physical Sciences, Heriot-Watt University, Edinburgh EH14 4AS, United Kingdom ) ; Jukes, Edward (KROHNE Ltd, 34-38 Rutherford Drive, Park Farm Industrial Estate, Wellingborough, Northants NN8 6AE, United Kingdom ) ;
  • 초록  

    Abstract Transporting CO 2 from the capture plant to the storage site may encounter challenges in the flow metering due to the unusual physical properties of CO 2 – especially when containing impurities. Building on the authors’ previous work on the effect of impurities in CO 2 mixtures on the performance of Coriolis flow meters, in this work, the accuracy of the density measurements of CO 2 mixtures was investigated using a Coriolis meter and a high-pressure Anton Paar densitometer. The measured density data were then compared to the Peng-Robinson cubic equation of state with CO 2 volume correction (PR-CO 2 ) as well as to the multi-parameter GERG-2008 equation of state. The Average Absolute Relative Deviations (AARD) of the density predictions with PR-CO 2 and GERG EOSs from the measured densities with the Anton Paar densitometer are 1.2% and 1.0%, respectively. While the Coriolis meter density values were consistently lower than the actual value in the gas phase. A correlation was obtained to correct the measured densities in the gas phase by fitting the measured densities to the prediction values using PR-CO 2 and GERG EoSs at elevated pressures and temperatures. The AARD was reduced from 26.1% to 2.3% using PR-CO 2 and from 25.4% to 3.6% using GERG EoSs. Highlights Flow measurement challenges of CO 2 -rich mixtures in pipelines were investigated. Mass flow and densities of CO 2 with impurities were measured by a Coriolis meter. The densities were compared to densities measured by oscillation-type densitometer. Peng-Robinson-CO 2 and GERG EoSs were evaluated using obtained densities. A correlation for the density of CO 2 -rich fluids by Coriolis meter is proposed.


  • 주제어

    Coriolis flow meter .   Density measurement .   Carbon dioxide (CO2) with impurities .   Densitometer .   Equation of State (EoS) .   CO2 pipeline.  

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