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Thermodynamics and separation process for quaternary acrylic systems
Author(s) -
Zuo Cuncun,
Li Yaping,
Li Chunshan,
Cao Shasha,
Yao Haoyu,
Zhang Suojiang
Publication year - 2016
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.15015
Subject(s) - uniquac , non random two liquid model , thermodynamics , ternary operation , phase diagram , ternary numeral system , chemistry , acrylate , binary number , activity coefficient , phase (matter) , organic chemistry , mathematics , computer science , physics , monomer , arithmetic , aqueous solution , programming language , polymer
Vapor‐liquid equilibrium (VLE) and liquid‐liquid equilibrium (LLE) data of binary and ternary acrylic systems were systematically measured. Subsequently, VLLE phase diagrams of binary systems, tridimensional VLE phase diagrams of methyl acrylate (MA)‐methanol (Me)‐H 2 O ternary system, and quaternary LLE phase diagrams of MA‐Me‐H 2 O‐methyl acetate (MeOAc) system were constructed. These diagrams clearly demonstrated the effects of temperature on phase equilibrium. The experimental data was fitted by the NRTL and UNIQUAC models, and the best‐fitted parameters were used to predict interaction properties of ternary and quaternary mixture. Therefore, the phase equilibrium data were provided as reference for the design of acrylic systems rectification or extraction process. Residue curve was mapped out for MA‐Me‐H 2 O system through Aspen plus software. Finally, using thermodynamics and residue curve as theoretical basis, two novel separation processes were proposed and applied to the quaternary acrylic systems. © 2015 American Institute of Chemical Engineers AIChE J, 62: 228–240, 2016