Page 346 - Distillation theory

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320 Synthesis of Separation Flowsheets

c. Which segments of component order are included in the trajectory tear-off
segment Reg t(2) of the top section?
r
d. Can component 2 be the top or the bottom product? If not, then why?
e. Can mixture 1,2 be the bottom product? If not, then why?
f. Can trajectory tear-off points Reg t(2) of the intermediate section of a column
m
of extractive distillation be located at edge 1-2? If not, then why?
2. Let the following segments of order of components 12435, 12345, 12354 (edge
1-2), and 12435, 21435, 21345 (edge 1-3) be located in the direction from vertex 1
at edges 1-2 and 1-3.
a. Can component 1 be the top product?
b. Can mixture 1,2 be the top product?
c. Can mixture 1,2,3 be the top product?
t
d. Which vertexes of triangle 1-2-3 does the trajectory tear-off region Reg of the
r
top section join if mixture 1,2,3 is the top product?
(2)
3. LetthefollowingsegmentsReg oforderofcomponents:13452,14352,and14325
ord
be located in direction from vertex 1 to vertex 2 at edge 1-2 of the concentration
pentahedron.
a. Can component 1 be the top product?
b. Can component 2 be the bottom product?
c. Can the trajectory tear-off region Reg (2) of the intermediate section of the
m
column of extractive distillation be located at edge 1-2? If yes, then why? Which
component can be the top product, and which component can be the entrainer
if the top product and the entrainer are one-component?

References

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