VAPOR-LIQUID-EQUILIBRIA OF SOME HYDROGEN PLUS HYDROCARBON SYSTEMS WITH THE WONG-SANDLER MIXING RULE

Date

1994-05-10

Author

HUANG, H
SANDLER, SI
ORBEY, H

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

161
views

0
downloads

Owing to the highly supercritical nature of hydrogen in hydrogen-hydrocarbon systems, it is difficult to accurately predict, or even correlate, the phase behavior of such mixtures with cubic equations of state and conventional mixing rules, especially as the critical point of the mixture is approached. Here we show that an extended Peng-Robinson equation of state and the recently introduced Wong-Sandler mixing rule can correlate these systems successfully, and more importantly that the mixing rule parameters can be generalized in terms of temperature and acentric factor of the hydrocarbon so that quite acceptable extrapolations and predictions are possible.

Subject Keywords

Hydrogen-containing mixtures, Vapor-liquid equilibria, Mixing rules, Equation of state, Theory

URI

https://hdl.handle.net/11511/66332

Journal

FLUID PHASE EQUILIBRIA

DOI

https://doi.org/10.1016/0378-3812(94)80091-x

Collections

Department of Chemical Engineering, Article

Suggestions

OpenMETU
Core

VAPOR-LIQUID-EQUILIBRIUM OF POLYMER-SOLUTIONS USING A CUBIC EQUATION OF STATE ORBEY, N; SANDLER, SI (1994-07-01) A recently proposed mixing rule has been combined with a cubic equation of state to correlate the vapor-liquid equilibria of various polymer + solvent and solvent + long chain hydrocarbon mixtures. We find that the two-parameter version of this model can correlate the solvent partial pressure in concentrated polymer solutions with high accuracy over a range of temperatures and pressures with temperature-independent parameters. For the solvent + long chain hydrocarbon systems, for which accurate vapor-phase ...
Flow investigation in a channel reactor using chemically reacting boundary layer equations Kenar, Doğu Hazar; Özyörük, Yusuf; Department of Aerospace Engineering (2023-1-13) In this study, an algorithm for the solution of chemically reacting flows in a channel reactor is developed by using boundary layer equations. The governing flow equations are simplified under certain assumptions with the application of similarity transformation. As a consequence of simplification, the characteristics of flow equations are changed to parabolic partial differential equations (PDE). Parabolic PDEs can be solved by numerical techniques initially designed for ordinary differential equations (OD...
lambda-transition of NH4Cl and ND4Cl at high pressures Yurtseven, Hasan Hamit; Sen, S. (Wiley, 2007-07-01) We predict in this study using the mean-field theory, the phase-line equation from the free energy expanded in terms of the order parameters of solid II and III phases of NH4Cl and ND4Cl close to the X-phase transitions at high pressures. Using the temperature and pressure dependence of the coefficients given in the phase-line equation, it is shown that the experimentally observed T-P phase diagram for the solid II-solid III transition, can be predicted from the mean field model studied here for both crysta...
Liquid-(Solid plus Liquid) Transitions in a Two-Component System of (CH3)CCl3 + CCl4 Yurtseven, Hasan Hamit (2020-02-01) Liquid-(solid + liquid) transitions are studied in (CH3)CCl3 + CCl4 by using the Landau phenomelogical model. The Gibbs energy is expanded in terms of the orientational disorder (OD) parameters for the transitions of the liquid-(rhombohedral + liquid) and liquid-(face-centered cubic + liquid) in a two component system of (CH3)CCl3 + CCl4. From the Gibbs energy, the phase line equations are derived for the transitions studied and they are fitted to the observed T-X phase diagram of (CH3)CCl3 + CCl4 for the c...
Formation of trace byproducts in the premixed flames of CH3Cl/C2H4 Huang, JW; Onal, I; Senkan, SM (1997-05-01) The chemical structure of an atmospheric pressure, fuel-rich (equivalence ratio 3.06), flat flame of a chloromethane and ethylene (CH3Cl/C2H4 = 1.99) has been studied experimentally using both heated microprobe and cold trap sampling techniques followed by high-resolution gas chromatography/mass spectrometry (GC/MS). The identities and absolute concentrations of more than 50 major and minor hydrocarbon and chlorinated hydrocarbon species have been established, including a large number of aromatics, substitu...

Citation Formats

H. HUANG, S. SANDLER, and H. ORBEY, “VAPOR-LIQUID-EQUILIBRIA OF SOME HYDROGEN PLUS HYDROCARBON SYSTEMS WITH THE WONG-SANDLER MIXING RULE,” FLUID PHASE EQUILIBRIA, pp. 143–153, 1994, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/66332.