Document Type
Thesis
Date of Award
6-30-1969
Degree Name
Master of Science in Chemical Engineering - (M.S.)
Department
Chemical Engineering
First Advisor
Joseph Joffe
Second Advisor
Dimitrios P. Tassios
Third Advisor
Angelo J. Perna
Abstract
The object of this thesis was to derive values of the hypothetical liquid fugacity coefficient of carbon dioxide for various temperatures and pressures. Most of the temperatures studied were above the critical temperature of carbon dioxide and thus carbon dioxide could not truly exist as a pure liquid. Hence the prefix "hypothetical" was used to acknowledge this apparent discrepancy. Carbon dioxide was purposely chosen for this reason. Also,the necessary data for carbon dioxide were generally more available than for any other normally gaseous solute.
The hypothetical liquid fugacity coefficients were derived from the published binary vapor-liquid equilibrium data of carbon dioxide dissolved in various hydrocarbon solvents. The latest techniques for determining the vapor phase fugacity coefficients and the liquid phase activity coefficients were used. These two coefficients, together with the vaporization equilibrium ratios (K-values), enabled the liquid fugacity coefficients to be calculated.
The liquid fugacity coefficient is a pure liquid component property, and, at a given temperature and total pressure, its value should be independent of the solvent used. Based on the data and techniques used, this was found to be true. An excellent correlation of the liquid fugacity coefficient was found for propane-carbon dioxide and butane-carbon dioxide data, both systems published by different authors. The results for the n-decane-carbon dioxide system showed a small deviation from the other solvent results.
The derived liquid fugacity coefficients do not agree with those obtained from the generalized Chao-Seader correlation.
Recommended Citation
Patterson, Douglas F., "Hypothetical liquid fugacity coefficients" (1969). Theses. 2662.
https://digitalcommons.njit.edu/theses/2662
