Critical Properties for Binary Mixtures of Ethane Containing Low Concentrations of n-Alkane

Singh, Harcharan and Lucien, Frank P. and Foster, Neil R. (2000) Critical Properties for Binary Mixtures of Ethane Containing Low Concentrations of n-Alkane. Journal of Chemical & Engineering Data, 45 (1). pp. 131-135. ISSN 0021-9568

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Official URL: https://doi.org/10.1021/je990220w

Abstract

The critical temperature and pressure for binary mixtures of ethane containing n-alkanes (C5 to C10) at low concentrations (up to 5.2 mol %) have been determined. A visual technique was used where the observation of mixture critical opalescence followed by the appearance of a vapor−liquid meniscus in a constant volume sight gauge was observed. The absolute errors in the measurements of the mixture critical temperature and pressure were ±2 K and ±0.5 bar, respectively, with an estimated relative error of ±1.5% for the composition of the organic compounds used. The binary mixture critical temperature and pressure were estimated using a correlation based on the theory of conformal solutions and a dilute-mixture Soave−Redlich−Kwong (SRK) equation of state approach. Both methods correlated the critical mixture temperature to an absolute error of within 3 K. However, the mixture critical pressure was correlated to an absolute error of within 10 and 4 bar using the conformal solutions correlation and a dilute-mixture SRK equation of state, respectively.

Item Type: Article
Additional Information: Singh, Harcharan. Department of Chemical Engineering, University of Malaya, Kuala Lumpur 50603, Malaysia.
Uncontrolled Keywords: Correlation theory; Equations of state; Ethane
Subjects: T Technology > TP Chemical technology
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 01 Sep 2021 05:14
Last Modified: 01 Sep 2021 05:14
URI: http://eprints.um.edu.my/id/eprint/26008

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