Phase-Behavior of Carbon-Dioxide and Hydrocarbon Mixtures

1985 ◽  
Vol 38 (12) ◽  
pp. 1739 ◽  
Author(s):  
RJ Sadus ◽  
CL Young
Keyword(s):  
Carbon Dioxide ◽  
Phase Behavior ◽  
Equations Of State ◽  
Fluid Model ◽  
Van Der Waals ◽  
Solubility Data ◽  
Critical Temperatures ◽  
Hydrocarbon Mixtures ◽  
Critical Solution Temperatures

Upper critical solution temperatures, gas-liquid critical temperatures and solubility data of carbon dioxide and hydrocarbon mixtures have been used to obtain a parameter, ξ, characterizing the interaction between pairs of unlike molecules in the mixture. The calculation of ξ values involved the use of the van der Waals one-fluid model together with the Guggenhiem and Redlich-Kwong equations of state. There is a discrepancy of several percent between ξ values calculated from the three sources of data. Trends in the value of ξ are discussed briefly.

Comparison of the values of the interaction parameter ξ from upper critical solution temperatures of acetone + alkanes with values obtained from gas-liquid critical temperatures

1977 ◽  
Vol 30 (4) ◽  
pp. 767 ◽  
Author(s):  
LS Toczylkin ◽  
CL Young
Keyword(s):  
Equation Of State ◽  
Interaction Parameter ◽  
Fluid Model ◽  
Van Der Waals ◽  
Critical Temperatures ◽  
Acetone Hexane ◽  
Critical Solution Temperatures

The upper critical solution temperatures, UCST , of acetone + alkane (n- C5H12 to n-C17H36) and acetone + hexane isomers have been measured. These results are used to calculate an interaction parameter ξ by using the van der Waals one-fluid model together with the Guggenheim equation of state. Values of ξ are compared with those obtained from the gas-liquid critical temperatures. The gas-liquid critical temperatures for the n- alkane + acetone systems were taken from the literature whereas those for the hexane isomers + acetone were measured in this work. The values of ξ calculated from gas-liquid critical temperatures are slightly greater than those calculated from the UCST as has been observed previously for other systems.

Upper critical solution temperatures of hydrocarbon + fluorocarbon mixtures

1978 ◽  
Vol 31 (1) ◽  
pp. 19 ◽  
Author(s):  
CP Hicks ◽  
RL Hurle ◽  
LS Toczylkin ◽  
CL Young
Keyword(s):  
Reasonable Agreement ◽  
Fluid Model ◽  
Virial Coefficients ◽  
Temperature Data ◽  
Solution Temperature ◽  
Critical Temperatures ◽  
Critical Solution Temperature ◽  
Second Virial Coefficients ◽  
Upper Critical Solution Temperature ◽  
Critical Solution Temperatures

Values of the interaction parameter ξ have been calculated from upper critical solution temperature data by use of the van der Waals one- fluid model for a range of hydrocarbon+fluorocarbon mixtures. The values obtained are compared with values calculated from gas-liquid critical temperatures and mixed second virial coefficients where experimental data on these properties are available. The overall agreement between calculated from these properties is only fair but there is reasonable agreement between ξ calculated from gas-liquid critical temperatures and upper critical solution temperatures for mixtures of quasi-spherical molecules. ��� Experimental upper critical solution temperatures are reported for 26 systems which have not been studied previously. Gas-liquid critical temperatures of four systems are reported.

Phase behavior of carbon dioxide-aromatic hydrocarbon mixtures

1986 ◽  
Vol 26 (2) ◽  
pp. 165-179 ◽  
Author(s):  
Ronald N. Occhiogrosso ◽  
Jeffrey T. Igel ◽  
Mark A. McHugh
Keyword(s):  
Carbon Dioxide ◽  
Aromatic Hydrocarbon ◽  
Phase Behavior ◽  
Hydrocarbon Mixtures

scholarly journals High-pressure phase equilibrium calculations for carbon dioxide + cyclopentane binary system

2014 ◽  
Vol 12 (9) ◽  
pp. 918-927 ◽  
Author(s):  
Sergiu Sima ◽  
Julia Cruz-Doblas ◽  
Martin Cismondi ◽  
Catinca Secuianu
Keyword(s):  
Carbon Dioxide ◽  
Binary System ◽  
Phase Behavior ◽  
Carbon Capture ◽  
Equations Of State ◽  
Carbon Capture And Storage ◽  
Wide Range ◽  
And Storage ◽  
Pressure Phase ◽  
Single Set

AbstractThe phase behavior of the carbon dioxide + cycloalkane mixtures usually receives low attention, though these systems are important for many industries, e.g. the carbon capture and storage. In this paper calculations results for the carbon dioxide + cyclopentane binary system are presented, based on SRK and PR cubic equations of state with classical van der Waals mixing rules. A single set of binary parameters for each model was proposed to predict the global phase behavior of the system in a wide range of pressure and temperature. Albeit the thermodynamic models used are simple, they are able to represent fairly well the phase behavior of the system analyzed in this paper.

The gas-liquid critical properties of alkane mixtures: Cycloalkanes + n-Alkanes and Cycloalkanes + Branched Alkanes

1977 ◽  
Vol 30 (10) ◽  
pp. 2103 ◽  
Author(s):  
KN Marsh ◽  
CL Young
Keyword(s):  
Interaction Energy ◽  
Fluid Model ◽  
Van Der Waals ◽  
Energy Parameter ◽  
Critical Properties ◽  
Critical Temperatures ◽  
Branched Alkanes

The gas-liquid critical temperatures, Tcm of cycloalkane + n-alkane and cycloalkane + branched alkane mixtures are reported. The interaction energy parameter, ξ(expressing the deviation from the Berthelot combining rule), has been calculated for each mixture from the values of Tcm using the van der Waals one-fluid model. The values of ξ are within 0.5% of unity.

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