Thermodynamic Insights on the Feasibility of Homogeneous Batch Extractive Distillation. 4. Azeotropic Mixtures with Intermediate Boiling Entrainer

This paper shows how knowledge of the univolatility and unidistribution line location and residue curve analysis help to assess the feasibility of batch extractive rectifying or stripping distillation of azeotropic mixtures by using an intermediate boiling entrainer. We consider five minimum boiling (minT) azeotropic mixtures AB with entrainer E, namely, acetone–heptane with benzene, methanol–toluene with triethylamine, methyl acetate–cyclohexane with carbon tetrachloride, dichloromethane–ethanol with acetone, and ethyl acetate–heptane with benzene; and one maximum boiling (maxT) azeotropic mixture, namely, chloroform–ethyl acetate with either 2-chlorobutane, isobutylchloride, bromopropane, or bromochloromethane. All ternary diagrams A–B–E belong to the 1.0-1b class, for which all three possible univolatility, αAB, αBE, and αAE, and unidistribution lines, KA, KB, and KE can exist. With application of the general feasibility criterion of Rodriguez-Donis et al. (Ind. Eng. Chem. Res. 2009, 48 (7), 3544−3559)...

[1]  Michael F. Malone,et al.  Patterns of composition change in multicomponent batch distillation , 1990 .

[2]  Michael F. Doherty,et al.  Design and synthesis of homogeneous azeotropic distillations. 4. Minimum reflux calculations for multiple-feed columns , 1986 .

[3]  Michael F. Doherty,et al.  Minimum entrainer flows for extractive distillation: A bifurcation theoretic approach , 1994 .

[4]  Erika R. Frits,et al.  Separation of azeotropes in batch extractive stripper with intermediate entrainer , 2006 .

[5]  Endre Rev,et al.  Feasibility of extractive distillation process variants in batch rectifier column , 2005 .

[6]  Sigurd Skogestad,et al.  Azeotropic phase equilibrium diagrams: a survey , 2003 .

[7]  Xavier Joulia,et al.  Thermodynamic Insights on the Feasibility of Homogeneous Batch Extractive Distillation. 2. Low-Relative-Volatility Binary Mixtures with Heavy Entrainer , 2009 .

[9]  P. Glavič,et al.  Separation of an azeotropic mixture by reverse extractive distillation , 1989 .

[10]  Michael F. Malone,et al.  Feasibility and separation sequencing in multicomponent batch distillation , 1991 .

[11]  Sigurd Skogestad,et al.  Topology of ternary VLE diagrams: Elementary cells , 2002 .

[12]  S. Kravchenko,et al.  Statistics of liquid-vapor phase equilibrium diagrams for various ternary zeotropic mixtures , 2007 .

[13]  Manfred Morari,et al.  The Curious Behavior of Homogeneous Azeotropic Distillation-Implications for Entrainer Selection , 1992 .

[14]  Wolfgang Marquardt,et al.  Shortcut methods for nonideal multicomponent distillation: 3. Extractive distillation columns , 2004 .

[15]  Z. Lelkes,et al.  Feasibility studies for batch extractive distillation with a light entrainer , 1999 .

[16]  Zoltan Lelkes,et al.  Feasibility of Extractive Distillation in a Batch Rectifier , 1998 .

[17]  Xavier Joulia,et al.  Entrainer Selection Rules for the Separation of Azeotropic and Close-Boiling-Temperature Mixtures by Homogeneous Batch Distillation Process , 2001 .

[18]  Erika R. Frits,et al.  Finding limiting flows of batch extractive distillation with interval arithmetic , 2006 .

[19]  E. Rev,et al.  Batch extractive distillation of maximal azeotrope with middle boiling entrainer , 2002 .

[20]  Michael F. Doherty,et al.  Design and synthesis of homogeneous azeotropic distillations. 3. The sequencing of columns for azeotropic and extractive distillations , 1985 .

[21]  Manfred Morari,et al.  Homogeneous azeotropic distillation: Comparing entrainers , 1991 .

[22]  Peter Lang,et al.  Batch extractive distillation under constant reflux ratio , 1994 .

[23]  E. Rev,et al.  Separation of a minimum-boiling azeotrope in a batch extractive rectifier with an intermediate-boiling entrainer , 2003 .