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Measurements and predictions of densities and viscosities in CO2 + hydrocarbon mixtures at high pressures and temperatures: CO2 + n-pentane and CO2 + n-hexane blends by Alejandro Moreau; Ilya Polishuk; José J. Segovia; Dirk Tuma; David Vega-Maza; M. Carmen Martín is a Chemical Engineering article available to read on EtoBox.
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This work reports new experimental data on densities and viscosities of (CO 2 + n-pentane) and (CO 2 + nhexane) mixtures at high pressures and temperatures. The densities were measured by a vibrating-tube densimeter with an expanded uncertainty (k = 2) smaller than 1.8 kgÁm À3 at six isotherms (from 273.15 K to 373.15 K), twelve pressures starting at 5 MPa up to 100 MPa, and at six CO 2 molar compositions (from 0 to 0.6). The viscosities were measured by a vibrating-wire viscometer with the corresponding relative expanded uncertainty (k = 2) smaller than 0.016 at five isotherms (from 273.15 K to 373.15 K), twelve pressures (from 5 MPa up to 100 MPa), and at two CO 2 molar compositions (0.1 and 0.3). The densities were fitted by the semiempirical Tammann-Tait equation for density data and the Vogel-Fulcher-Tammann (VFT) equation for viscosity data, respectively. The Groupe Européen de Recherches Gazières (GERG-2008) equation of state was also applied for modelling the densities. Over-all robustness and reliability of the Perturbed-Chain Statistical Association Fluid Theory (PC-SAFT) and its critical point-based modification (CP-PC-SAFT) were examined. Accuracies of the Modified Yarr
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It is typically read by researchers, students, and practitioners in Chemical Engineering.
- Author
- Alejandro Moreau; Ilya Polishuk; José J. Segovia; Dirk Tuma; David Vega-Maza; M. Carmen Martín
- Publisher
- Elsevier BV
- Published
- 2022
- Language
- EN
- Field
- Chemical Engineering (Physical Sciences)