Possible Compositions in Feed Cross Section

The coordinates of segments [xf-i]f and [x/]J can be determined from purely geometric considerations from the known coordinates of the stationary points and of point Xf. 

While solving this task, we act the way we did when we deternained points x/ i and X/ in the mode of minimum reflux (see Section 5.6). 

It follows from the condition of material balance in the feed cross-section (Eq. [5.18]) that segments [x/ and [x/] should be parallel to each other and to the line of intersection of surfaces or hypersurfaces Reg (5/ - ) , and 

Possible composition segments at the first trays above and below the feed cross-section in the real columns [xf i] and [x/] located at vicinity of curvilinear sepa-ratrix manifolds RegJ (5 f - - N ) and RegJ p (5/ - 5 - iV4+), or inside the working trajectory bundles Reg and Reg , correspond to segments and [xfYl. 

At the direct split, S = and 5 = A/ (Fig. 7.2a). Therefore, at the direct split, segment [x/ i] is located inside working trajectory bundle of the top section 

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Distillation Trajectories of Finite Columns Possible Compositions in Feed Cross Section... 

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