Measurement of isothermal (vapor+liquid) equilibria, (VLE) for binary (CH4+CO2) from T=(240.35 to 293.15) K and CO2 rich synthetic natural gas systems from T=(248.15 to 279.15) K

Qazi Nasir, Khalik M. Sabil, K. K. Lau

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Isothermal vapor-liquid equilibrium (VLE) data for methane (CH<inf>4</inf>)+carbon dioxide (CO<inf>2</inf>) binary system at temperature range of (240.35-293.15) K and synthetic carbon dioxide rich natural gas mixtures at temperature and pressure range of (248.15-279.15) K and (2.81-9.05) MPa were measured in sapphire type equilibrium cell apparatus. Thermodynamic modeling of experimental data was carried out with GERG2008-equation of state (EOS) and volume-translated Peng-Robinson equation of state (VTPR-EOS) using van der Waals (vdw1) mixing rule. For CH<inf>4</inf>+CO<inf>2</inf> system, the temperature dependent binary interaction parameters (kij) were tuned to measured VLE data, whereas, between CO<inf>2</inf> with other hydrocarbons the value of kij = 0 was assumed. Comparison between measured and prediction shows excellent agreement with overall lower deviations were obtained.

Original languageEnglish
Pages (from-to)158-167
Number of pages10
JournalJournal of Natural Gas Science and Engineering
Volume27
Issue number1
Early online date29 Aug 2015
DOIs
Publication statusPublished - Nov 2015

Keywords

  • (Vapor+liquid) equilibrium
  • Binary interaction parameter
  • GERG-EOS
  • Vapor pressure
  • VTPR-EOS

ASJC Scopus subject areas

  • Energy Engineering and Power Technology

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