This window is used to define the method for estimating values for hydrocarbon-hydrocarbon binary interaction data missing from the input file, and from any selected databanks, when using an Equation of State Method. The selected option regresses missing parameters to fit the specified K-value cubic EOS method.
Usage
From the Thermodynamic System - Modification Window, push the Enter Data button by the property method for which property-specific data are to be accessed.
From the Thermodynamic Property Modification Window, push the Enter Data button corresponding to Data Item "Fill Options". The Binary Fill Options window opens.
The FILL options mentioned above are described in the table below. They are ordered in the table so the topmost option generates the least data. Moving downward, successively lower options generate more and more kij data. This provides a spectrum of results to compare against specific production data for goodness of fit. Based on that comparative analysis, the option generating the best fit should be chosen.
Fill Options Available for Cubic Equations of State |
|
Fill Option
|
Description
|
None |
Uses interactions from the input file and existing databank values. |
GOR |
Provides missing cubic EOS kij’s for methane and ethane interacting with heavier hydrocarbons. Based on correlation of existing experimental data. |
GAO |
Provides missing cubic EOS kij’s for C1 through C3 interacting with heavier hydrocarbons. Based on a modified Gao, et. al., approach. |
CPHC |
Provides missing cubic EOS kij’s for all hydrocarbon pairs. Based upon the work of Chueh and Prausnitz. |
PPALL |
This option estimates binary interaction parameters for all components using PPR78 correlation. |
PPMISS |
This option estimates binary interaction parameters for components with missing binary interaction data using PPR78 correlation. |
Note: PPALL and PPMISS keywords are applicable only for SRK, SRKM, SRKP, SRKS, PR, PRM, PRP and GLYCOL methods. This method is based on the work of Brana-Mulero, F.J., Hirohama, S., Lingampally, P., Sasaki, M., and Jaubert, J.-N. Application of PPR78 Thermodynamic Framework as a Fill Method with a Semiempirical Mixing Rule for Mixtures Involved in Gas Processing. J. Chem. Eng. Data 2016, 61, 4164-4171 (Special Issue: Proceedings of PPEPPD 2016). DOI:10.1021/acs.jced.6b00572.
The radio buttons may be used to select the estimation method used to supply missing binary interaction kij’s for hydrocarbon-hydrocarbon pairs.
Press the OK button to exit the window.
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