Chemical Engineering > GATE 2022 > Distillation
A simple distillation column is designed to separate an ideal binary mixture to specified distillate and bottoms purities at a given column pressure. If RRmin is the minimum reflux ratio for this separation, select the statement that is NOT CORRECT with regard to the variation in the total annualized cost (TAC) of the column with reflux ratio (RR).
A
TAC has a minimum with respect to RR.
B
The sharpest rise in TAC occurs as RR approaches RRmin from above.
C
The sharpest decrease in TAC occurs as RR approaches RRmin from above.
D
TAC increases with RR for RR >> RRmin.

Correct : c

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