Density measurements on binary mixtures (nitrogen + carbon dioxide and argon + carbon dioxide) at temperatures from (298.15 to 423.15) K with pressures from (11 to 31) MPa using a single-sinker densimeter

Abstract A single-sinker densimeter was built to specifically investigate the (p, ρ, T, x) behavior of fluid mixtures relevant for carbon capture and storage (CCS). Due to the use of a magnetic-suspension coupling, the densimeter enables measurements over the temperature range from (273.15 to 423.15) K with pressures up to 35 MPa. A comprehensive analysis of the experimental uncertainties was undertaken. The expanded uncertainties (k = 2) are 35 mK for temperature, 3.39 kPa for pressure, and 0.033% for density determination. The apparatus was used for measurements on the binary systems (nitrogen + carbon dioxide) and (argon + carbon dioxide). The compositions for both systems were (0.05 and 0.01) mole fraction carbon dioxide. Density measurements were carried out at temperatures from (298.15 to 423.15) K with pressures from (11 to 31) MPa. The relative combined expanded uncertainty (k = 2) in density was 0.15% for the (nitrogen + carbon dioxide) mixtures and 0.12% for the (argon + carbon dioxide) mixtures. A major contribution to this uncertainty emerged from the uncertainty in the gas mixture composition. The new experimental data were compared to the GERG-2008 equation of state (EOS) for natural-gas mixtures as implemented in the NIST REFPROP database and to the EOS-CG, another new Helmholtz energy model for CCS mixtures as implemented in the TREND software package of Ruhr-University Bochum. Relative deviations were mostly within 0.5%. The agreement of the new density values with the only available literature data closest to the composition range under study was better than 0.1%.

[1]  R. Haney,et al.  Compressibilities of Nitrogen–Carbon Dioxide Mixtures , 1944 .

[2]  Kenneth R. Hall,et al.  p–ρ–T Behavior of Three Lean Synthetic Natural Gas Mixtures Using a Magnetic Suspension Densimeter and Isochoric Apparatus from (250 to 450) K with Pressures up to 150 MPa: Part II , 2011 .

[3]  Maria E. Mondejar,et al.  Accurate (p, ρ, T) data for two new (carbon dioxide + nitrogen) mixtures from (250 to 400) K at pressures up to 20 MPa , 2012 .

[4]  James G. Blencoe,et al.  Volumetric properties for {(1 –x)CO2+xCH4},{(1 −x)CO2+xN2}, and {(1 −x)CH4+xN2} at the preessures (19.94, 29.94, 39.94, 59.93, 79.93, and 99.93) MPa and the temperature 673.15 K , 1996 .

[5]  G. Valenti,et al.  Supercritical pressure–density–temperature measurements on CO2–N2, CO2–O2 and CO2–Ar binary mixtures , 2012 .

[6]  W. Wagner,et al.  A New Equation of State for Carbon Dioxide Covering the Fluid Region from the Triple‐Point Temperature to 1100 K at Pressures up to 800 MPa , 1996 .

[7]  K. Hall,et al.  Accurate density measurements for a 91% methane natural gas-like mixture , 2007 .

[8]  B. E. Gammon,et al.  Experimental cross virial coefficients for binary mixtures of carbon dioxide with nitrogen, methane and ethane at 300 and 320 K , 1989 .

[9]  T. Letcher,et al.  Volume Properties: Liquids, Solutions and Vapours , 2014 .

[10]  K. Fujii,et al.  Accurate density measurements of reference liquids by a magnetic suspension balance , 2004 .

[11]  W Wagner,et al.  Densimeters for very accurate density measurements of fluids over large ranges of temperature, pressure, and density , 2004 .

[12]  W. Wagner,et al.  Force Transmission Errors in Magnetic Suspension Densimeters , 2007 .

[13]  Naofumi Yamada,et al.  Linear Thermal Expansion Coefficient of Silicon from 293 to 1000 K , 2004 .

[14]  M. Mondejar,et al.  (p, ρ, T) Behavior of Two Mixtures of Carbon Monoxide with Nitrogen in the Temperature Range from (250 to 400) K and Pressures up to 20 MPa , 2011 .

[15]  K. Hall,et al.  Accurate PρT Data for Methane from (300 to 450) K up to 180 MPa , 2010 .

[16]  M. Richter,et al.  Influence of adsorption and desorption on accurate density measurements of gas mixtures , 2014 .

[17]  J. C. Seitz,et al.  Volumetric properties of CO2CH4N2 fluids at 200°C and 1000 bars: A comparison of equations of state and experimental data , 1994 .

[18]  P. J. Mcelroy,et al.  Compression-Factor Measurements on Methane, Carbon Dioxide, and (Methane + Carbon Dioxide) using a Weighing Method , 1989 .

[19]  Kenneth R. Hall,et al.  Volumetric behavior of near-equimolar mixtures for CO2+CH4 and CO2+N2 , 1989 .

[20]  Bert Metz,et al.  Carbon Dioxide Capture and Storage , 2005 .

[21]  John J. Hall,et al.  Electronic Effects in the Elastic Constants of n -Type Silicon , 1967 .

[22]  Wolfgang Wagner,et al.  A new, accurate single-sinker densitometer for temperatures from 233 to 523 K at pressures up to 30 MPa , 1995 .

[23]  M. Mølnvik,et al.  Dynamis CO2 quality recommendations , 2008 .

[24]  M. Mondejar,et al.  Accurate thermodynamic characterization of a synthetic coal mine methane mixture , 2014 .

[25]  M. Mondejar,et al.  New (p, ρ, T) data for carbon dioxide – Nitrogen mixtures from (250 to 400) K at pressures up to 20 MPa , 2011 .

[26]  W. Wagner,et al.  Measurement and correlation of the equilibrium liquid and vapour densities and the vapour pressure along the coexistence curve of methane , 1986 .

[27]  B. E. Gammon,et al.  Isochoric pVT and phase equilibrium measurements for carbon dioxide + nitrogen , 1995 .

[28]  Maria E. Mondejar,et al.  Experimental Determination of (p, ρ, T) Data for Three Mixtures of Carbon Dioxide with Methane for the Thermodynamic Characterization of Nonconventional Energy Gases , 2012 .

[29]  Roland Span,et al.  A Reference Equation of State for the Thermodynamic Properties of Nitrogen for Temperatures from 63.151 to 1000 K and Pressures to 2200 MPa , 2000 .

[30]  G. Iglesias-Silva,et al.  Force Transmission Error Analysis for a High-Pressure Single-Sinker Magnetic Suspension Densimeter , 2010 .

[31]  Y. Arai,et al.  THE P-V-T-X RELATION FOR THE CARBON DIOXIDE-ARGON SYSTEM , 1971 .

[32]  B. E. Gammon,et al.  Densities of Carbon Dioxide + Nitrogen from 225 K to 450 K at Pressures up to 70 MPa , 1997 .

[33]  A. Hacura,et al.  Density values of carbon dioxide and nitrogen mixtures from 500 to 2500 bar at 323 and 348 K , 1988 .

[34]  W. Wagner,et al.  Measurements of the(p,ρ,T) relation of methane and carbon dioxide in the temperature range 240 K to 520 K at pressures up to 30 MPa using a new accurate single-sinker densimeter , 2001 .

[35]  Yasuhiko Arai,et al.  THE EXPERIMENTAL DETERMINATION OF THE P-V-T-X RELATIONS FOR THE CARBON DIOXIDE-NITROGEN AND THE CARBON DIOXIDE-METHANE SYSTEMS , 1971 .

[36]  W. Wagner,et al.  The GERG-2008 Wide-Range Equation of State for Natural Gases and Other Mixtures: An Expansion of GERG-2004 , 2012 .

[37]  César R. Chamorro,et al.  Improvement of the measurement uncertainty of a high accuracy single sinker densimeter via setup modifications based on a state point uncertainty analysis , 2011 .

[38]  Wolfgang Wagner,et al.  A Reference Equation of State for the Thermodynamic Properties of Sulfur Hexafluoride (SF6) for Temperatures from the Melting Line to 625K and Pressures up to 150MPa , 2009 .

[39]  Y. Kano,et al.  Absolute density measurements by dual sinker magnetic levitation densimeter , 2012 .

[40]  M. McLinden,et al.  NIST Standard Reference Database 23: Reference Fluid Thermodynamic and Transport Properties-REFPROP, Version 9.1 | NIST , 2013 .

[41]  W. M. Haynes,et al.  Isochoric (p, Vm, T) measurements on CO2 and on (0.982CO2+0.018N2) from 250 to 330 K at pressures to 35 MPa , 1989 .

[42]  J. C. Seitz,et al.  Volumetric properties for {(1 −x)CO2+xCH4}, {(1 −x)CO2+xN2}, and {(1 −x)CH4+xN2} at the pressures (9.94, 19.94, 29.94, 39.94, 59.93, 79.93, and 99.93) MPa and temperatures (323.15, 373.15, 473.15, and 573.15) K , 1996 .

[43]  Shaoyi Jiang,et al.  Determination of compressibility factors and virial coefficients for the systems containing N2, CO2 and CHClF2 by the modified Burnett method , 1990 .

[44]  A. E. Edwards,et al.  The Second Virial Coefficients of Gaseous Mixtures1 , 1942 .

[45]  W. Wagner,et al.  Measurement and correlation of the ( p , ρ , T ) relation of liquid cyclohexane, toluene, and ethanol in the temperature range from 233.15K to 473.15K at pressures up to 30MPa for use as density reference liquids , 2011 .

[46]  Eric W. Lemmon,et al.  Thermodynamic Properties of Propane. III. A Reference Equation of State for Temperatures from the Melting Line to 650 K and Pressures up to 1000 MPa , 2009 .

[47]  Wolfgang Wagner,et al.  A reference equation of state for the thermodynamic properties of ethane for temperatures from the melting line to 675 K and pressures up to 900 MPa , 2006 .

[48]  Olav Bolland,et al.  Power generation with CO2 capture: Technology for CO2 purification , 2009 .

[49]  Roland Span,et al.  A New Equation of State for Argon Covering the Fluid Region for Temperatures From the Melting Line to 700 K at Pressures up to 1000 MPa , 1999 .

[50]  J. Trusler,et al.  Measurement of the (pressure, density, temperature) relation of two (methane + nitrogen) gas mixtures at temperatures between 240 and 400 K and pressures up to 20 MPa using an accurate single-sinker densimeter , 2006 .

[51]  W. Wagner,et al.  An accurate single-sinker densimeter and measurements of the (p, ρ,T) relation of argon and nitrogen in the temperature range from (235 to 520) K at pressures up to 30 MPa , 1998 .

[52]  W. Wagner,et al.  Measurements of the (p,ρ,T) relation of ethylene, ethane, and sulphur hexafluoride in the temperature range from 235 K to 520 K at pressures up to 30 MPa using an accurate single-sinker densimeter , 2003 .

[53]  Roland Span,et al.  EOS–CG: A Helmholtz energy mixture model for humid gases and CCS mixtures , 2016 .

[54]  R. Górski,et al.  The Interaction Coefficients of Gas Mixtures1 , 1953 .

[56]  K. Hall,et al.  Characterization of Deepwater Natural Gas Samples. Part 1: 78 % Methane Mixture with Heavy Components , 2010 .

[57]  C. Bennett,et al.  The compressibility of carbon dioxide‐argon mixtures , 1960 .

[58]  Kenneth R. Hall,et al.  PρT Behavior of a Lean Synthetic Natural Gas Mixture Using Magnetic Suspension Densimeters and an Isochoric Apparatus: Part I , 2011 .

[59]  Eric W. Lemmon,et al.  Equations of State for Mixtures of R-32, R-125, R-134a, R-143a, and R-152a , 2004 .

[60]  Y. Kano,et al.  A new method for correcting a force transmission error due to magnetic effects in a magnetic levitation densimeter , 2007 .