Sharp split separatrix regions

At sharp split separatrix sharp split region Af+ s... 

Let s note that the top product point cannot be located at sides 2-3 and 1-3 because Eq. (5.15) is not vahd for these sides (i.e., Xo i [2-3] and xd [1-3]). Let s also note that ihc separatrix sharp split region of section trajectories bundle... 

Figure 5.24 shows the evolution of separatrix sharp split region of top section... 

L/ K) on D,2- Separatrix sharp split region for rectifying section Reg shaded. 

At reflux bigger than minimum, the sizes of working trajectory bundles of the sections increase and, at the condition of validity of material balance in feed cross-section (Eq. [5.18]), points x/ i and x/ can be located not only at these separatrix regions, but also inside separatrix sharp split regions - N f ) and... 

Figure 7.13. Section separatrix sharp split regions for extractive distillation of ideal four-...

At reflux bigger than minimum and at quasisharp separation with distributed component at the set distribution of this component among the products, there is the only one composition at the first tray above the feed cross-section expressed by point X/-1 in the vicinity of separatrix sharp spht region Re p (5/ - - N ) and the only one composition at the first tray below the feed cross-section expressed by point Xf in the vicinity of separatrix sharp split region Reg p - N )- The less sharp is separation the farther from separatrix sharp split trajectory bundles of the sections the composition points in the feed cross-section are located. 

Separatrix sharp split region (Reg., Re se ) separatrix element of working bundle of section trajectories for given reflux and product point containing tear-off points S, S, and N+ and free from point N 5 ... 

Flgore 534. (a) The taDgeDtial pinch in rectifying section for the acetone(l)-benzene(2)-chloroform(3)-tolnene(4) mixtnre for the split 1,3 2,4, and (b) natnral projection. Separatrix sharp spht region for rectifying section 5 — Sj — =... 

Figure 7.11. Section trajectories at quasisharp split with the distributed component 2 for the equimolar pentane(l)-hexane(2)-heptane(3)-octane(4) mixture L/V)r = 0.5, xd,2 = 0.336, product purity — 0.999, 0.99, 0.98, 0.95) rectifying separatrix sharp spiit region...

Joining condition at minimum reflux for split with distributed component feed cross-section composition point for one column s section must belong to the sep-aratrix min-r ux region and the other to the separatrix sharp distillation region for given product points and reflux ratio and satisfy the material balance in feed cross-section x/ i e andxf e Reg or Xf.i and... 

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