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Impacts of equations of state (EOS) and impurities on the volume calculation of CO2 mixtures in the applications of CO2 capture and storage (CCS) processes

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Listed:
  • Li, H.
  • Yan, J.

Abstract

Volume property is the necessary thermodynamic property in the design and operation of the CO2 capture and storage system (CCS). Because of their simple structures, cubic equations of state (EOS) are preferable to be applied in predicting volumes for engineering applications. This paper evaluates the reliabilities of seven cubic EOS, including PR, PT, RK, SRK, MPR, MSRK and ISRK for predicting volumes of binary CO2 mixtures containing CH4, H2S, SO2, Ar and N2, based on the comparisons with the collected experimental data. Results show that for calculations on the volume properties of binary CO2 mixtures, PR and PT are generally superior to others for all of the studied mixtures. In addition, it was found that the binary interaction parameter has clear effects on the calculating accuracy of an EOS in the volume calculations of CO2 mixtures. In order to improve the accuracy, kij was calibrated for all of the EOS regarding the gas and liquid phases of all the studied binary CO2 mixtures, respectively.

Suggested Citation

  • Li, H. & Yan, J., 2009. "Impacts of equations of state (EOS) and impurities on the volume calculation of CO2 mixtures in the applications of CO2 capture and storage (CCS) processes," Applied Energy, Elsevier, vol. 86(12), pages 2760-2770, December.
  • Handle: RePEc:eee:appene:v:86:y:2009:i:12:p:2760-2770
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    References listed on IDEAS

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    1. Li, H. & Yan, J., 2009. "Evaluating cubic equations of state for calculation of vapor-liquid equilibrium of CO2 and CO2-mixtures for CO2 capture and storage processes," Applied Energy, Elsevier, vol. 86(6), pages 826-836, June.
    2. Li, H. & Yan, J. & Yan, J. & Anheden, M., 2009. "Impurity impacts on the purification process in oxy-fuel combustion based CO2 capture and storage system," Applied Energy, Elsevier, vol. 86(2), pages 202-213, February.
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