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Entropy flow and energy efficiency analysis of extractive distillation processes with a heavy entrainer

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Academic year: 2021

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Figure

Figure 1. (a) Configuration of extractive distillation column; (b) schematic diagram of equilibrium stage in an adiabatic column.
Table 1 lists the speci fications of the columns to be studied. The number of trays N and main feed composition x F are considered to be constant, and operating pressure is set at 1 atm.
Figure 2. Residue curve map and univolatility line α AB = 1: (a) minimum-boiling azeotropic mixture acetone (A) −methanol (B) with heavy entrainer water (E) (class 1.0-1a); (b) maximum-boiling azeotropic mixture acetone (A)−chloroform (B) with heavy entrai
Figure 6. Entropy production in the extractive distillation process as function of (a) the reflux ratio at F E /F = 0.55 and (b) as a function of F E /F at R = 2.76.
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