For the same feed, feed quality and separation (in a distillation column), with the increase of total pressure, the number of ideal plates will

Related MCQs

• 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 At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped).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,
• The minimum number of theoretical plates is required for achieving a given separation in distillation column with
• According to the Fenske equation, what will be the minimum number of plates required in a distillation column to separate an equimolar binary mixture of components A and B into an overhead fraction containing 99 mol% A and a bottom fraction containing 98 mol% B ? Assume that relative volatility (αAB = 2) does not change appreciably in the column.
• 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
• 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
• When the feed to a distillation column is a saturated liquid, slope of the feed line is
• At what value of reflux ratio, number of theoretical plates in a distillation column is minimum?
• Fenske-Underwood equation used for calculating the minimum number of theoretical plates in distillation column is valid for
• For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams
• 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