Description
Some specifications:
1. Use the UNIQUAC thermodynamic model
2. Distillation column has 25 trays, with the feed entering at the top of the 15
th tray; Total
distillate flow is ½ the inlet flow and nominal reflux ratio is 15; Total condenser can be used.
Answer the following questions:
1. What is the concentration of butanol in the distillate stream?
2. Take the last four digits of your roll number (i.e., abcd, if your roll number is CH18babc).
Identify a set of conditions under which the butanol concentration in the distillate is less
than 0.bc lbmol/hr.
3. Show in a graph the tradeoff between the number of trays and reboiler heat duty to meet
the objective in (2).
4. Identify the reflux rate at which you can obtain a isobutanol recovery of 9a.bc% in the
distillate stream. (recovery = the amount in distillate stream / amount in feed stream x 100)
5. Use the “Design Specification” and “Vary” feature in the Radfrac block to achieve the
specification in (4).
Deliverables (DUE DATE: 6 Feb , 11:00pm)
1. Two page report in pdf format
2. Aspen Plus file (named as per your Roll Number)
