Vapor-liquid equilibria from perturbation gas chromatography. Part I: Multicomponent parameter estimation

Authors

  • W. A. Ruff,

    1. Department of Chemical Engineering, Texas A&M University, College Station, TX 77843
    Current affiliation:
    1. Texaco Research, P.O. Box 1608, Port Arthur, TX 77641
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  • C. J. Glover,

    Corresponding author
    1. Department of Chemical Engineering, Texas A&M University, College Station, TX 77843
    • Department of Chemical Engineering, Texas A&M University, College Station, TX 77843
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  • A. T. Watson

    1. Department of Chemical Engineering, Texas A&M University, College Station, TX 77843
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Abstract

Elution times determined from perturbation chromatography experiments are functions of all sorbing species isotherms through the concentration partial derivatives. Measurements at a sufficient number of appropriate compositions along with isotherm models and adjustable parameters allow reduction of the retention time data to VLE by a nonlinear parameter estimation procedure described in this paper. The method can be implemented for both empirical isotherm models, which can be used to minimize model deficiencies, and for theoretical thermodynamic models, which have extrapolation potential and may require fewer parameters.

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