Tear-off region

Trajectory Tear-Off Regions and Sharp Distillation Regions... 

We call the region where trajectory tear-off is feasible trajectory tear-off region ... 

Figure 5.10. Component-order regions Reg, trajectory tear-off regions Reg and Re , and sharp split regions Reg and Reg (hatched for bottom section and shaded for top section, hatched and shaded for two section) for the acetone(l)-chloroform(2)-methanol(3) mixture for splits (a)l,3 1,2 (Reg / and Reg j ) and (b) 2,3 1,2 (Reg ...

If the split without distributed components is set, then the mentioned trajectory tear-off regions of sections should be boundary elements of one sharp split region... 

Product points can belong only to those boundary elements of concentration simplex that contain trajectory tear-off regions. Along with that, product points should be located at these boundary elements within the limits of some region,... 

The notions of trajectory tear-off regions Reg or Reg possible product... 

As for the top and bottom sections, working trajectory bundle of the intermediate section should be located in a sharp distillation region where the order of the components is the same as at the trajectory tear-off region i.e. segment... 

The location of intermediate sections trajectories of columns with two feeds, including those at extractive, heteroazeotropic, and heteroextractive distillation, has fundamental distinctions from that of section trajectories of the simple columns. At sharp extractive or heteroextractive distillation, pseudoproduct point x), of the intermediate section should be located at the continuation of the boundary element, to which components of top product and of entrainer belong. If this condition is valid, the whole trajectory bundle of the intermediate section including trajectory tear-off point x[ from the mentioned boundary element is located in the region Reg where the top product components are more volatile and the entrainer components are less volatile than the rest of components. The trajectory tear-off point of the intermediate section is the stable node x[ = A+). The conditions of intermediate section trajectory tear-off in different points of trajectory tear-off region Reg allow to determine limit modes of extractive distillation for each mixture - the mode of minimum flow rate of the entrainer min, and for the... 

The similar condition should be valid for the trajectory tear-off regions Rege ... 

The sphts in the colunms with decanters are the most interesting for synthesis, if in the concentration simplex there are regions of existence of two liquid phases RegL-L and a heteroazeotrope that is the unstable node of the concentration simplex C or its boundary element having a trajectory tear-off region of the... 

The next step of presynthesis is determination of possible product regions Reg g in those two-dimensional faces of concentration tetrahedron that contain trajectory tear-off regions (i.e., in face 1-2-3 for the top product and in face 2-3-4 for the bottom product). We have to find contours of these regions Reg[oL[Pg.289]

Figure 8.14. Component-order and tear-off regions RegJ and Regi on four-...

Rege of intermediate sections in two-dimensional faces of the concentration pentahedron. The analysis of possibility of separation for three sections proves that there are several efficient splits meeting the three necessary conditions of sharp separation (1) 4 1,2,3,5 (entrainer 13), trajectory tear-off regions of inter-... 

Figure 8.21. Tear-off regions Rege (shaded) for extractive section on faces of the water(l)-...

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