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

• Main Authors: Nasir, Q., Sabil, K.M., Lau, K.K.
• Format: Article
• Published: Elsevier B.V. 2015
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84949730476&doi=10.1016%2fj.jngse.2015.08.045&partnerID=40&md5=972b71398f787b72da0edaf85fe9c093; http://eprints.utp.edu.my/31661/
• Institution: Universiti Teknologi Petronas

Isothermal vapor-liquid equilibrium (VLE) data for methane (CH4) + carbon dioxide (CO2) 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 CH4 + CO2 system, the temperature dependent binary interaction parameters (kij) were tuned to measured VLE data, whereas, between CO2 with other hydrocarbons the value of kij=0 was assumed. Comparison between measured and prediction shows excellent agreement with overall lower deviations were obtained. © 2015 Elsevier B.V.