The Experts below are selected from a list of 240 Experts worldwide ranked by ideXlab platform

Paolo Stringari - One of the best experts on this subject based on the ideXlab platform.

  • Experimental study of the influence of nitrogen and oxygen on the solubility of solid carbon dioxide in liquid and vapor methane at low temperature
    Industrial and engineering chemistry research, 2018
    Co-Authors: Paolo Stringari, Mauro Riva
    Abstract:

    Undesired solid CO2 formation is a main issue for the liquefied natural gas (LNG) industry and, more recently, for the bioLNG production. The abundance of CO2 solubility data in liquid methane may not be sufficient to fully understand the problem when important amounts of air gases (O2 and N2) are present in the natural gas or biomethane. Scarcity and incompleteness of available solubility data involving nitrogen and oxygen motivated the production of original solid–liquid–vapor Equilibrium (SLVE) data for the N2–CH4–CO2 and N2–O2–CH4–CO2 systems. The solubility limit of CO2 in both liquid and vapor phases is measured in this work to allow the definition of solid formation conditions. A static analytic methodology is used for obtaining (p, T, x, y) data at SLVE in the temperature range from 125 to 146 K. Experimental results obtained in this work show that the addition of nitrogen and oxygen in methane decreases the solubility of CO2 in the liquid phase. A thermodynamic model for the calculation of solid–liquid–vapor Equilibrium of the N2–O2–CH4–CO2 system is also presented in this work and compared with experimental data, providing good agreement.

  • Solid–Liquid–Vapor Equilibrium Models for Cryogenic Biogas Upgrading
    Industrial & Engineering Chemistry Research, 2014
    Co-Authors: Mauro Riva, Joseph Toubassy, Marco Campestrini, Denis Clodic, Paolo Stringari
    Abstract:

    Design and optimization of cryogenic technologies for biogas upgrading require accurate determination of freeze-out boundaries. In cryogenic upgrading processes involving dry ice formation, accurate predictions of solid–liquid, solid–vapor, and solid–liquid–vapor equilibria are fundamental for a correct design of the heat exchanger surface in order to achieve the desired biomethane purity. Moreover, the liquefied biogas production process, particularly interesting for cryogenic upgrading processes due to the low temperature of the obtained biomethane, requires an accurate knowledge of carbon dioxide solubility in liquid methane to avoid solid deposition. The present work compares two different approaches for representing solid–liquid, solid–vapor, and solid–liquid–vapor equilibria for the CH4−CO2 mixture. Model parameters have been regressed in order to optimize the representation of phase Equilibrium at low temperatures, with particular emphasis to the equilibria involving a solid phase. Furthermore, the...

  • Solid–Liquid–Vapor Equilibrium Models for Cryogenic Biogas Upgrading
    Industrial and engineering chemistry research, 2014
    Co-Authors: Riva Mauro, Marco Campestrini, Joseph Toubassy, Denis Clodic, Paolo Stringari
    Abstract:

    Design and optimization of cryogenic technologies for biogas upgrading require accurate determination of freeze-out boundaries. In cryogenic upgrading processes involving dry ice formation, accurate predictions of solid–liquid, solid–vapor, and solid–liquid–vapor equilibria are fundamental for a correct design of the heat exchanger surface in order to achieve the desired biomethane purity. Moreover, the liquefied biogas production process, particularly interesting for cryogenic upgrading processes due to the low temperature of the obtained biomethane, requires an accurate knowledge of carbon dioxide solubility in liquid methane to avoid solid deposition. The present work compares two different approaches for representing solid–liquid, solid–vapor, and solid–liquid–vapor equilibria for the CH4−CO2 mixture. Model parameters have been regressed in order to optimize the representation of phase Equilibrium at low temperatures, with particular emphasis to the equilibria involving a solid phase. Furthermore, the extended bibliographic research allows determining the regions where more accurate data are needed.

  • An equation of state for solid–liquid–vapor Equilibrium applied to gas processing and natural gas liquefaction
    Fluid Phase Equilibria, 2014
    Co-Authors: Paolo Stringari, Marco Campestrini, Christophe Coquelet, Philippe Arpentinier
    Abstract:

    The analytical equation of state for the representation of solid, liquid, and vapor (SLV-EoS), proposed by Yokozeki, has been applied to the representation of phase Equilibrium of substances involved in gas processing and in the natural gas liquefaction process. A new procedure for the parameters regression has been set up in order to achieve a better representation of phase Equilibrium. This new procedure has been applied for obtaining new parameters for the original SLV-EoS equation, with the van der Waals attractive term. Different attractive terms have also been studied, in order to achieve an optimized representation for solid–liquid, solid–vapor, and liquid–vapor Equilibrium of pure substances. The obtained equations have been used for representing phase Equilibrium of carbon dioxide, methane, ethane, and propane in a wide range of temperature and pressure. The new equations have also been applied to the description of phase Equilibrium, involving also solid phases, of the mixtures methane–carbon dioxide, ethane–carbon dioxide, and propane–carbon dioxide.

  • An equation of state for solid-Liquid-Vapor Equilibrium applied to gas processing and natural gas liquefaction
    Fluid Phase Equilibria, 2014
    Co-Authors: Paolo Stringari, Marco Campestrini, Christophe Coquelet, Philippe Arpentinier
    Abstract:

    The analytical equation of state for the representation of solid, liquid, and vapor (SLV-EoS), proposed by Yokozeki, has been applied to the representation of phase Equilibrium of substances involved in gas processing and in the natural gas liquefaction process. A new procedure for the parameters regression has been set up in order to achieve a better representation of phase Equilibrium. This new procedure has been applied for obtaining new parameters for the original SLV-EoS equation, with the van der Waals attractive term. Different attractive terms have also been studied, in order to achieve an optimized representation for solid–liquid, solid–vapor, and liquid–vapor Equilibrium of pure substances. The obtained equations have been used for representing phase Equilibrium of carbon dioxide, methane, ethane, and propane in a wide range of temperature and pressure. The new equations have also been applied to the description of phase Equilibrium, involving also solid phases, of the mixtures methane–carbon dioxide, ethane–carbon dioxide, and propane–carbon dioxide.

Alfredo Di Nola - One of the best experts on this subject based on the ideXlab platform.

  • Prediction of the liquid–vapor Equilibrium pressure using the quasi‐Gaussian entropy theory
    Journal of Chemical Physics, 1996
    Co-Authors: Andrea Amadei, Danilo Roccatano, M. E. F. Apol, Herman J. C. Berendsen, Alfredo Di Nola
    Abstract:

    We derived a method to evaluate the liquid–vapor Equilibrium pressure, with high accuracy over a large range of temperature, using the quasi‐Gaussian entropy theory. The final expression that we obtain for the Equilibrium pressure as a function of the temperature can be considered as a very accurate approximate solution of the Clausius–Clapeyron equation. The method was applied to water, methanol and mercury, and was compared to two usual approximations of the Clausius–Clapeyron equation.

  • Prediction of the Liquid-Vapor Equilibrium pressure using the quasi-Gaussian entropy theory
    The Journal of Chemical Physics, 1996
    Co-Authors: Andrea Amadei, Danilo Roccatano, M. E. F. Apol, Herman J. C. Berendsen, Alfredo Di Nola
    Abstract:

    We derived a method to evaluate the liquid–vapor Equilibrium pressure, with high accuracy over a large range of temperature, using the quasi‐Gaussian entropy theory. The final expression that we obtain for the Equilibrium pressure as a function of the temperature can be considered as a very accurate approximate solution of the Clausius–Clapeyron equation. The method was applied to water, methanol and mercury, and was compared to two usual approximations of the Clausius–Clapeyron equation.

Andrea Amadei - One of the best experts on this subject based on the ideXlab platform.

  • Prediction of the liquid–vapor Equilibrium pressure using the quasi‐Gaussian entropy theory
    Journal of Chemical Physics, 1996
    Co-Authors: Andrea Amadei, Danilo Roccatano, M. E. F. Apol, Herman J. C. Berendsen, Alfredo Di Nola
    Abstract:

    We derived a method to evaluate the liquid–vapor Equilibrium pressure, with high accuracy over a large range of temperature, using the quasi‐Gaussian entropy theory. The final expression that we obtain for the Equilibrium pressure as a function of the temperature can be considered as a very accurate approximate solution of the Clausius–Clapeyron equation. The method was applied to water, methanol and mercury, and was compared to two usual approximations of the Clausius–Clapeyron equation.

  • Prediction of the Liquid-Vapor Equilibrium pressure using the quasi-Gaussian entropy theory
    The Journal of Chemical Physics, 1996
    Co-Authors: Andrea Amadei, Danilo Roccatano, M. E. F. Apol, Herman J. C. Berendsen, Alfredo Di Nola
    Abstract:

    We derived a method to evaluate the liquid–vapor Equilibrium pressure, with high accuracy over a large range of temperature, using the quasi‐Gaussian entropy theory. The final expression that we obtain for the Equilibrium pressure as a function of the temperature can be considered as a very accurate approximate solution of the Clausius–Clapeyron equation. The method was applied to water, methanol and mercury, and was compared to two usual approximations of the Clausius–Clapeyron equation.

Marco Campestrini - One of the best experts on this subject based on the ideXlab platform.

  • Solid–Liquid–Vapor Equilibrium Models for Cryogenic Biogas Upgrading
    Industrial & Engineering Chemistry Research, 2014
    Co-Authors: Mauro Riva, Joseph Toubassy, Marco Campestrini, Denis Clodic, Paolo Stringari
    Abstract:

    Design and optimization of cryogenic technologies for biogas upgrading require accurate determination of freeze-out boundaries. In cryogenic upgrading processes involving dry ice formation, accurate predictions of solid–liquid, solid–vapor, and solid–liquid–vapor equilibria are fundamental for a correct design of the heat exchanger surface in order to achieve the desired biomethane purity. Moreover, the liquefied biogas production process, particularly interesting for cryogenic upgrading processes due to the low temperature of the obtained biomethane, requires an accurate knowledge of carbon dioxide solubility in liquid methane to avoid solid deposition. The present work compares two different approaches for representing solid–liquid, solid–vapor, and solid–liquid–vapor equilibria for the CH4−CO2 mixture. Model parameters have been regressed in order to optimize the representation of phase Equilibrium at low temperatures, with particular emphasis to the equilibria involving a solid phase. Furthermore, the...

  • Solid–Liquid–Vapor Equilibrium Models for Cryogenic Biogas Upgrading
    Industrial and engineering chemistry research, 2014
    Co-Authors: Riva Mauro, Marco Campestrini, Joseph Toubassy, Denis Clodic, Paolo Stringari
    Abstract:

    Design and optimization of cryogenic technologies for biogas upgrading require accurate determination of freeze-out boundaries. In cryogenic upgrading processes involving dry ice formation, accurate predictions of solid–liquid, solid–vapor, and solid–liquid–vapor equilibria are fundamental for a correct design of the heat exchanger surface in order to achieve the desired biomethane purity. Moreover, the liquefied biogas production process, particularly interesting for cryogenic upgrading processes due to the low temperature of the obtained biomethane, requires an accurate knowledge of carbon dioxide solubility in liquid methane to avoid solid deposition. The present work compares two different approaches for representing solid–liquid, solid–vapor, and solid–liquid–vapor equilibria for the CH4−CO2 mixture. Model parameters have been regressed in order to optimize the representation of phase Equilibrium at low temperatures, with particular emphasis to the equilibria involving a solid phase. Furthermore, the extended bibliographic research allows determining the regions where more accurate data are needed.

  • An equation of state for solid–liquid–vapor Equilibrium applied to gas processing and natural gas liquefaction
    Fluid Phase Equilibria, 2014
    Co-Authors: Paolo Stringari, Marco Campestrini, Christophe Coquelet, Philippe Arpentinier
    Abstract:

    The analytical equation of state for the representation of solid, liquid, and vapor (SLV-EoS), proposed by Yokozeki, has been applied to the representation of phase Equilibrium of substances involved in gas processing and in the natural gas liquefaction process. A new procedure for the parameters regression has been set up in order to achieve a better representation of phase Equilibrium. This new procedure has been applied for obtaining new parameters for the original SLV-EoS equation, with the van der Waals attractive term. Different attractive terms have also been studied, in order to achieve an optimized representation for solid–liquid, solid–vapor, and liquid–vapor Equilibrium of pure substances. The obtained equations have been used for representing phase Equilibrium of carbon dioxide, methane, ethane, and propane in a wide range of temperature and pressure. The new equations have also been applied to the description of phase Equilibrium, involving also solid phases, of the mixtures methane–carbon dioxide, ethane–carbon dioxide, and propane–carbon dioxide.

  • An equation of state for solid-Liquid-Vapor Equilibrium applied to gas processing and natural gas liquefaction
    Fluid Phase Equilibria, 2014
    Co-Authors: Paolo Stringari, Marco Campestrini, Christophe Coquelet, Philippe Arpentinier
    Abstract:

    The analytical equation of state for the representation of solid, liquid, and vapor (SLV-EoS), proposed by Yokozeki, has been applied to the representation of phase Equilibrium of substances involved in gas processing and in the natural gas liquefaction process. A new procedure for the parameters regression has been set up in order to achieve a better representation of phase Equilibrium. This new procedure has been applied for obtaining new parameters for the original SLV-EoS equation, with the van der Waals attractive term. Different attractive terms have also been studied, in order to achieve an optimized representation for solid–liquid, solid–vapor, and liquid–vapor Equilibrium of pure substances. The obtained equations have been used for representing phase Equilibrium of carbon dioxide, methane, ethane, and propane in a wide range of temperature and pressure. The new equations have also been applied to the description of phase Equilibrium, involving also solid phases, of the mixtures methane–carbon dioxide, ethane–carbon dioxide, and propane–carbon dioxide.

M. E. F. Apol - One of the best experts on this subject based on the ideXlab platform.

  • Prediction of the liquid–vapor Equilibrium pressure using the quasi‐Gaussian entropy theory
    Journal of Chemical Physics, 1996
    Co-Authors: Andrea Amadei, Danilo Roccatano, M. E. F. Apol, Herman J. C. Berendsen, Alfredo Di Nola
    Abstract:

    We derived a method to evaluate the liquid–vapor Equilibrium pressure, with high accuracy over a large range of temperature, using the quasi‐Gaussian entropy theory. The final expression that we obtain for the Equilibrium pressure as a function of the temperature can be considered as a very accurate approximate solution of the Clausius–Clapeyron equation. The method was applied to water, methanol and mercury, and was compared to two usual approximations of the Clausius–Clapeyron equation.

  • Prediction of the Liquid-Vapor Equilibrium pressure using the quasi-Gaussian entropy theory
    The Journal of Chemical Physics, 1996
    Co-Authors: Andrea Amadei, Danilo Roccatano, M. E. F. Apol, Herman J. C. Berendsen, Alfredo Di Nola
    Abstract:

    We derived a method to evaluate the liquid–vapor Equilibrium pressure, with high accuracy over a large range of temperature, using the quasi‐Gaussian entropy theory. The final expression that we obtain for the Equilibrium pressure as a function of the temperature can be considered as a very accurate approximate solution of the Clausius–Clapeyron equation. The method was applied to water, methanol and mercury, and was compared to two usual approximations of the Clausius–Clapeyron equation.