Question 3 [20 marks]

a. Simulation of multicomponent distillation in process simulation environment (e.g.

Aspen Hysys, Aspen Plus, ChemCad) is very handy. Nevertheless, the approximate

methods using Fenske Underwood Gilliland Kirkbride equations cannot be

undermined. Can you please explain how these approximate methods are useful to

establish the simulation using simulation package?

[10 marks]

b. Can you please elaborate the advantages and limitations of MESH equations for the

multicomponent distillations? In line with the limitations, you should also highlight the

ways to overcome the challenges of the implementation.

[10 marks]