Related Questions

On moving the feed line (q-line) from saturated liquid feed (vertical position) to saturated vapor feed (horizontal feed), if the slope of both the operating lines are to be increased, then it will result in
A Greater degree of separation with a fixed number of trays
B Increased reboiler load
C Increased reflux ratio
D None of these
When the feed to a distillation column is a saturated liquid, slope of the feed line is
A Zero
B Unity
C Infinity
D None of these
In distillation where q is defined as the moles of liquid flow in the stripping section per mole of feed introduced, for saturated liquid feed
A q > 1
B q
C q = 1
D q = 0
The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will
A Increase
B Decrease
C Remains same
D Depend on saturated boiling point; may increase or decrease
What is the value of 'q' for saturated liquid feed to a distillation column?
A 0
B 1
C >1
The slope of the feed line in distillation opeartion is given by (where, q = fraction of the feed stream that is liquid.)
A $$ - {\text{q}}$$
B $$ - \frac{{\text{q}}}{{1 - {\text{q}}}}$$
C $$ - \frac{{\text{q}}}{{{\text{q}} - 1}}$$
D None of these
A distillation column with N plates is being operated under normal conditions. At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped). At the new steady state,
A Composition of vapors and that of liquid do not vary throughout the column
B Reboiler load and condenser load are minimum
C The top and bottom compositions are unchanged with and without total reflux
D The top and bottom compositions correspond to the maximum enrichment available
For the same feed, feed quality and separation (in a distillation column), with the increase of total pressure, the number of ideal plates will
A Increase
B Decrease
C Remain same
D Data insufficient, can't be predicted
The slope of operating line in the rectifying section of a distillation column is unity, if the reflux ratio is
A 0
B ∞
C 1
D Minimum
What is the slope of the operating line in the stripping section of a distillation column?
A 0
B $$\infty $$
C > 1

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