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Issue
Korean Journal of Chemical Engineering,
Vol.39, No.10, 2783-2791, 2022
Experimental and computational phase behavior analysis of the PGME+CO2 and PGMEA+CO2 mixture at high pressures
Kwon YT, Dhamodharan D, Choi H, Shim SW, Byun HS
The vapor+liquid equilibrium (VLE) for the 2-components of propylene glycol monomethyl ether (PGME) and propylene glycol monomethyl ether acetate (PGMEA) in high pressure (HP) supercritical carbon dioxide (S-CO2) was evaluated. The solubility data determination was performed by the synthetic method at T=(313.2 to 393.2) K and p=(1.92 to 16.5) MPa. The obtained results indicated that the solubility of S-CO2 was found to increase monotonically with the increase of system temperature and mole fraction of PGME and PGMEA in binary (solute+solvent) mixtures. The solubility curve of PGME and PGMEA in the PGME+S-CO2 and PGMEA+S-CO2 models increases in connection with the increasing T at a steady pressure. The PGME+S-CO2 and PGMEA+S-CO2 models reveal type-I phase behavior (PB). The critical properties were achieved by Joback and Aspen plus method. Moreover, the experimental result adequately correlated with the Peng-Robinson equation of state (P-R E-O-S). Root mean square deviation (RMSD) for the PGME+S-CO2 [Joback: kij=0.0, hij=-0.060, Aspen: kij=0.0, hij=-0.065] and PGMEA+S-CO2 [Joback: kij=0.0, hij=0.0, Aspen: kij=0.0, hij=0.0] systems using two factors determined at 353.2 K was 9.07% (Joback), 10.98% (Aspen) and 4.03% (Joback), 4.78% (Aspen), respectively.
Keywords: Phase Behavior Measurement; PGME; PGMEA; Carbon Dioxide; P-R Equation of State
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