Critical interaction constants for binary gas mixtures for use in the Redlich-Kwong equation of state

Author

Warren J. Biss, New Jersey Institute of Technology

Document Type

Thesis

Date of Award

6-30-1968

Degree Name

Master of Science in Chemical Engineering - (M.S.)

Department

Chemical Engineering and Chemistry

First Advisor

Joseph Joffe

Second Advisor

Dimitrios P. Tassios

Third Advisor

John E. McCormick

Abstract

In this work, critical interaction constants were used to evaluate the interaction coefficients of the Redlich - Kwong constants for bin-ary gas mixtures. From these constants, the pressure - volume - temperature behavior of the mixtures was calculated using the Redlich - Kwong equation.

The critical interaction constants, T₁₂ and P₁₂ , were evaluated for binary mixtures by solving, simultaneously, two second degree equations relating terminal slopes for critical pressure loci and the mole fractions of the components present. The feasibility of this method was tested by calculating P-V-T data for binary mixtures and comparing this with values obtained using the standard combination rules of Redlich and Kwong.

Solutions to the second degree equations were obtained for 90 % of the systems tested. Where P-V-T data was available to test these constants, however, the combination rules of Redlich and Kwong were found, generally, to give better results.

Recommended Citation

Biss, Warren J., "Critical interaction constants for binary gas mixtures for use in the Redlich-Kwong equation of state" (1968). Theses. 2089.
https://digitalcommons.njit.edu/theses/2089